Category: News
I have been trying to derivate equation under to find the formula for 3 parameters Weibull distribution as same as picture. Can someone please help me fix it?
syms m sigma_i sigma_0 sigma_th i N
lnL = symsum(ln((m/sigma_0) * ((sigma_i – sigma_th) / sigma_0))^(m-1) * exp(-(((sigma_i – sigma_th) / sigma_0) ^m)), i, 1, N);
Df_m = diff(lnL,m)
Df_sigma_0 = diff(lnL,sigma_0)
Df_sigma_th = diff(lnL,sigma_th)syms m sigma_i sigma_0 sigma_th i N
lnL = symsum(ln((m/sigma_0) * ((sigma_i – sigma_th) / sigma_0))^(m-1) * exp(-(((sigma_i – sigma_th) / sigma_0) ^m)), i, 1, N);
Df_m = diff(lnL,m)
Df_sigma_0 = diff(lnL,sigma_0)
Df_sigma_th = diff(lnL,sigma_th) syms m sigma_i sigma_0 sigma_th i N
lnL = symsum(ln((m/sigma_0) * ((sigma_i – sigma_th) / sigma_0))^(m-1) * exp(-(((sigma_i – sigma_th) / sigma_0) ^m)), i, 1, N);
Df_m = diff(lnL,m)
Df_sigma_0 = diff(lnL,sigma_0)
Df_sigma_th = diff(lnL,sigma_th) derivatives of expressions with several variables MATLAB Answers — New Questions
ThingsSpeak not receiving data from The Things Stack
I have a ERS Co2 sensor. It is connected to the TTN and the TTN is receiving the data. I want to connect it to ThingSpeak.
First, I used the payload uplink formatter recommended by the ELSYS company in the TTN (See the file attached: Elsys_Sensor.txt).
After I went through some ThingSpeak tutorials – I used the payload uplink formatter in the file Elys_Sensor_Adapted with the program returning the required data in Fields.
Still the ThingSpeak doesnt receive any data.
Note: I used the Channel ID and the Write API in the TTN to add ThingSpeak as webhook.I have a ERS Co2 sensor. It is connected to the TTN and the TTN is receiving the data. I want to connect it to ThingSpeak.
First, I used the payload uplink formatter recommended by the ELSYS company in the TTN (See the file attached: Elsys_Sensor.txt).
After I went through some ThingSpeak tutorials – I used the payload uplink formatter in the file Elys_Sensor_Adapted with the program returning the required data in Fields.
Still the ThingSpeak doesnt receive any data.
Note: I used the Channel ID and the Write API in the TTN to add ThingSpeak as webhook. I have a ERS Co2 sensor. It is connected to the TTN and the TTN is receiving the data. I want to connect it to ThingSpeak.
First, I used the payload uplink formatter recommended by the ELSYS company in the TTN (See the file attached: Elsys_Sensor.txt).
After I went through some ThingSpeak tutorials – I used the payload uplink formatter in the file Elys_Sensor_Adapted with the program returning the required data in Fields.
Still the ThingSpeak doesnt receive any data.
Note: I used the Channel ID and the Write API in the TTN to add ThingSpeak as webhook. thingspeak MATLAB Answers — New Questions
Call a simulink function from an s-function
How can I call a simulink function from within an own s-function block?
(There are examples of how to output a function call triggering a function call subsystem. But that’s not intended.)
Basically I want to rebuild the existing "Function Caller" block with an own s-function. How does s-function code look like for such an approach?
And will it be linked/ shown by function connectors if simulink function is provided?
Thanks.How can I call a simulink function from within an own s-function block?
(There are examples of how to output a function call triggering a function call subsystem. But that’s not intended.)
Basically I want to rebuild the existing "Function Caller" block with an own s-function. How does s-function code look like for such an approach?
And will it be linked/ shown by function connectors if simulink function is provided?
Thanks. How can I call a simulink function from within an own s-function block?
(There are examples of how to output a function call triggering a function call subsystem. But that’s not intended.)
Basically I want to rebuild the existing "Function Caller" block with an own s-function. How does s-function code look like for such an approach?
And will it be linked/ shown by function connectors if simulink function is provided?
Thanks. s function, simulink function, function connector MATLAB Answers — New Questions
How can I have Matlab Simulink autocode program read data from an external file?
I have a Simulink model that contains calculations that I want to have it perform on different external data files. I want to generate C-code autocode from the model that I can compile into an EXE application file. I would like the application to prompt me for the input data file to read and an output file to write the results. I’m having difficulty figuring out what I need to put in the model for the I/O interface and how to type cast all the I/O variables. I would really like some kind of an example for doing simple external file I/O just to get me started but i haven’t been able to find anything in my searches yet. Any hints or suggestions would be appreciated – thank you!I have a Simulink model that contains calculations that I want to have it perform on different external data files. I want to generate C-code autocode from the model that I can compile into an EXE application file. I would like the application to prompt me for the input data file to read and an output file to write the results. I’m having difficulty figuring out what I need to put in the model for the I/O interface and how to type cast all the I/O variables. I would really like some kind of an example for doing simple external file I/O just to get me started but i haven’t been able to find anything in my searches yet. Any hints or suggestions would be appreciated – thank you! I have a Simulink model that contains calculations that I want to have it perform on different external data files. I want to generate C-code autocode from the model that I can compile into an EXE application file. I would like the application to prompt me for the input data file to read and an output file to write the results. I’m having difficulty figuring out what I need to put in the model for the I/O interface and how to type cast all the I/O variables. I would really like some kind of an example for doing simple external file I/O just to get me started but i haven’t been able to find anything in my searches yet. Any hints or suggestions would be appreciated – thank you! matlab, simulink, encoder, file i/o, external data MATLAB Answers — New Questions
Merging individual waves into a single wave as a synthetic ECG
Hello everyone 🙂
I created individual ECG waves (P wave, QRS complex, and T wave, which is identical to the P wave) using symbolic variables and the Fourier series. However, I am struggling to merge these waves into a single waveform—it jumps around unpredictably, and I generally don’t know how to proceed. 🙁
my code is here:
close all;clear all; clc;
%P wave (T wave)
T = 1
f = 1/T
omega = 2*pi*f
syms t k
c=0
a_0 = (1/pi) * int((-t^2), t, c, c + 1);
a_n = (1/pi)*int(-t^2 * cos(k*t),t,c,c+1);
b_n = 0;
FS_P = a_0/2 + symsum(a_n*cos(k*t)+b_n*sin(k*t),k,1,1)
FS_P = 4*FS_P
four = subs(FS_P)
%number of repetitions
N = 1
ezplot(four,0:6.3*N)
grid on
%QRS complex – first part
syms t k x
c=0
a_0 = 0
a_n = 0
b_n = 1/pi * int(t*sin(k*t),x,c,c+2*pi)
FS_QRS = a_0/2 + symsum(a_n*cos(k*t)+b_n*sin(k*t),k,1,1000)
FS_QRS = 2*FS_QRS
four = subs(FS_QRS)
N=4
ezplot(four)
%QRS complex – second part
syms t k x
c=0
a_0 = 0
a_n = 0
b_n = 1/pi * int(-t*sin(k*t),x,c,c+2*pi)
FS_QRs = a_0/2 + symsum(a_n*cos(k*t)+b_n*sin(k*t),k,1,1000)
FS_QRs = -2*FS_QRs
four = subs(FS_QRs)
ezplot(four)
I try to simply add these signals but it doesnt work :(Hello everyone 🙂
I created individual ECG waves (P wave, QRS complex, and T wave, which is identical to the P wave) using symbolic variables and the Fourier series. However, I am struggling to merge these waves into a single waveform—it jumps around unpredictably, and I generally don’t know how to proceed. 🙁
my code is here:
close all;clear all; clc;
%P wave (T wave)
T = 1
f = 1/T
omega = 2*pi*f
syms t k
c=0
a_0 = (1/pi) * int((-t^2), t, c, c + 1);
a_n = (1/pi)*int(-t^2 * cos(k*t),t,c,c+1);
b_n = 0;
FS_P = a_0/2 + symsum(a_n*cos(k*t)+b_n*sin(k*t),k,1,1)
FS_P = 4*FS_P
four = subs(FS_P)
%number of repetitions
N = 1
ezplot(four,0:6.3*N)
grid on
%QRS complex – first part
syms t k x
c=0
a_0 = 0
a_n = 0
b_n = 1/pi * int(t*sin(k*t),x,c,c+2*pi)
FS_QRS = a_0/2 + symsum(a_n*cos(k*t)+b_n*sin(k*t),k,1,1000)
FS_QRS = 2*FS_QRS
four = subs(FS_QRS)
N=4
ezplot(four)
%QRS complex – second part
syms t k x
c=0
a_0 = 0
a_n = 0
b_n = 1/pi * int(-t*sin(k*t),x,c,c+2*pi)
FS_QRs = a_0/2 + symsum(a_n*cos(k*t)+b_n*sin(k*t),k,1,1000)
FS_QRs = -2*FS_QRs
four = subs(FS_QRs)
ezplot(four)
I try to simply add these signals but it doesnt work 🙁 Hello everyone 🙂
I created individual ECG waves (P wave, QRS complex, and T wave, which is identical to the P wave) using symbolic variables and the Fourier series. However, I am struggling to merge these waves into a single waveform—it jumps around unpredictably, and I generally don’t know how to proceed. 🙁
my code is here:
close all;clear all; clc;
%P wave (T wave)
T = 1
f = 1/T
omega = 2*pi*f
syms t k
c=0
a_0 = (1/pi) * int((-t^2), t, c, c + 1);
a_n = (1/pi)*int(-t^2 * cos(k*t),t,c,c+1);
b_n = 0;
FS_P = a_0/2 + symsum(a_n*cos(k*t)+b_n*sin(k*t),k,1,1)
FS_P = 4*FS_P
four = subs(FS_P)
%number of repetitions
N = 1
ezplot(four,0:6.3*N)
grid on
%QRS complex – first part
syms t k x
c=0
a_0 = 0
a_n = 0
b_n = 1/pi * int(t*sin(k*t),x,c,c+2*pi)
FS_QRS = a_0/2 + symsum(a_n*cos(k*t)+b_n*sin(k*t),k,1,1000)
FS_QRS = 2*FS_QRS
four = subs(FS_QRS)
N=4
ezplot(four)
%QRS complex – second part
syms t k x
c=0
a_0 = 0
a_n = 0
b_n = 1/pi * int(-t*sin(k*t),x,c,c+2*pi)
FS_QRs = a_0/2 + symsum(a_n*cos(k*t)+b_n*sin(k*t),k,1,1000)
FS_QRs = -2*FS_QRs
four = subs(FS_QRs)
ezplot(four)
I try to simply add these signals but it doesnt work 🙁 signal processing, symbolic MATLAB Answers — New Questions
Why Only Web-Based Outlook Clients Can Recall Encrypted Email
Client-Side Limitation or Licensing Limitation?
Microsoft launched the new message recall feature for Exchange Online in October 2022 and shipped the code in early 2023. I duly wrote about the feature and noted the restriction for email protected by sensitivity labels. The EHLO blog describing message recall says:
Does recall work for encrypted email?
Message Recall within Classic Outlook is not available for messages encrypted with OME or using MIP labels. When attempting to recall these messages, the recall option will be greyed out in Classic Outlook and unavailable. This is a client-side limitation and is by design. To recall these messages, access your mailbox using OWA or the New Outlook for Windows, and recall your message from there.
Microsoft subsequently revamped the new message recall in August 2024. Nothing more was said about sensitivity labels. All we know is that a client-side limitation stops Outlook classic being able to recall protected messages while OWA and the new Outlook can both recall protected messages with ease (Figure 1).
Having the Right License is Always Important
Roll forward to message center notification MC882266 (last updated 23 October 2024, Microsoft 365 roadmap item 413431) where we discover that a component called Microsoft Purview Information Protection Advanced Message Encryption lies at the heart of the matter. According to the notification, user accounts must have a Microsoft 365 E5 or Office 365 E5 license to be able to recall encrypted email from their Sent Items folder. The same limitations that the mailbox must be in Exchange Online and that recall is only possible for messages sent to recipients within the same organization exist.
Notice that there’s no mention of client-side limitations. When such limitations are mentioned, it implies that some software problem exists within a client that prevents the client from being able to do something. Outlook classic is perfectly capable of working with sensitivity labels that encrypt messages.
In fact, Outlook classic is the most capable client in terms of working with encrypted messages because it can operate offline, including the ability to issue message recall requests for unprotected email by selecting a message and using the option in the File menu (Figure 2). The recall option isn’t available if the selected message has a sensitivity label with encryption.
Recall requests are kept in the Outbox folder until a network connection is available. Synchronization then occurs to send the recall request to Exchange Online for processing.
The ability of Outlook classic to work offline almost as well as when online is where the real issue might lie. OWA and the new Outlook are both designed to work online and that’s how they usually work. It’s therefore easy for the clients to check the licensing status of the signed in user, specifically to check that the account holds the Azure Information Protection Premium P2 service plan that’s included in the Microsoft 365 E5 and Office 365 E5 products. Outlook classic would need additional code to check user licensing when online so that it could work offline, much like the client stores rights management use licenses to allow it to work with protected messages when offline.
It can be argued that the limitation exists both in the client (can’t check a license unless Outlook classic is online) and licensing (can’t recall protected messages unless the right license is available), so the somewhat torturous text MC882266 is accurate without being clear.
Message Recall in Outlook Mobile
Meanwhile, message center notification MC1025213 (7 March 2025, Microsoft 365 roadmap item 471444) announces that Outlook for iOS and Android can recall messages. The option is available from the […] menu after selecting a message (Figure 3). Outlook mobile clients cannot recall protected messages.
In Case of Protected Recall, Look for OWA
I’m not sure how many people will want to recall encrypted messages. If you find yourself in this situation, it’s easy to fire up OWA or the New Outlook and issue the recall request. Of course, the added time required to remember to use a different client and perform the message recall might mean that the recipient has read the text, but that’s a risk you must take.
Keep up to date with developments like the new Outlook by subscribing to the Office 365 for IT Pros eBook. Our monthly updates make sure that our subscribers understand the most important changes happening across Office 365.
Stopping Sobolan Malware with Aqua Runtime Protection
Aqua Nautilus researchers have discovered a new attack campaign targeting interactive computing environments such as Jupyter Notebooks. The attack consists of multiple stages, beginning with the download of a compressed file from a remote server. Once executed, the attacker deploys several malicious tools to exploit the server and establish persistence. This campaign poses a significant risk to cloud-native environments, as it enables unauthorized access and long-term control over compromised systems.
Aqua Nautilus researchers have discovered a new attack campaign targeting interactive computing environments such as Jupyter Notebooks. The attack consists of multiple stages, beginning with the download of a compressed file from a remote server. Once executed, the attacker deploys several malicious tools to exploit the server and establish persistence. This campaign poses a significant risk to cloud-native environments, as it enables unauthorized access and long-term control over compromised systems.Read More
How to create a fixed user who receives GNSS signals within a map made from 3D plot?
https://kr.mathworks.com/help/nav/ug/simulate-gnss-multipath-effects-on-uav-flying-in-urban-environment.html
I would like to refer to the example of matlab above to create a user who is statically fixed in the middle of the map, not a user who moves along the trajectory.
So I modified it a little bit and wrote the code, and when I run it, the figure comes out well, but there’s an unknown error, so I need some help.
Error using fusion.internal.GPSSensorBase/validateInputsImpl (line 302)
Expected input to be an array with number of columns equal to 3.
Error in deepseek_v01 (line 31)
[lla, velocity] = gps(position, zeros(1,3));
^^^^^^^^^^^^^^^^^^^^^^^^^
I’m getting this error, and I’m curious about the solution. I’m also curious if there’s any problem even if I ignore the error and use it.
The .osm file I use is not attached, so you can use the .osm file that Matlab supports by default.
referenceLocation = [37.498759 127.027487 0];
scene = uavScenario(‘ReferenceLocation’, referenceLocation, ‘UpdateRate’, 10, ‘StopTime’, Inf);
buildingColor = [0.8 0.8 0.8];
if isfile(‘gangnam_11exit.osm’)
addMesh(scene, ‘buildings’, {‘gangnam_11exit.osm’, [-250 250], [-250 250], ‘auto’}, buildingColor);
else
addMesh(scene, ‘buildings’, {‘random’, [-150 150], [-150 150], [10 50]}, buildingColor);
end
user = uavPlatform(‘User’, scene, ‘ReferenceFrame’, ‘ENU’, ‘InitialPosition’, [0 0 80]);
gps = gpsSensor(‘UpdateRate’, 10, …
‘ReferenceLocation’, referenceLocation, …
‘HorizontalPositionAccuracy’, 1.6, …
‘VerticalPositionAccuracy’, 3.0, …
‘VelocityAccuracy’, 0.1);
fig = figure(‘Name’,’Static GNSS User’);
ax = show3D(scene);
hold(ax, ‘on’);
axis(ax, ‘equal’);
grid(ax, ‘on’);
view(ax, 3);
plot3(ax, 0, 0, 80, ‘ro’, ‘MarkerSize’, 12, ‘MarkerFaceColor’, ‘r’);
setup(scene);
while ishandle(fig)
[position, orientation] = user.read();
[lla, velocity] = gps(position, zeros(1,3));
fprintf(‘[ENU Position] X: %.2fm, Y: %.2fm, Z: %.2fmn’, position(1), position(2), position(3));
fprintf(‘[GPS Coordinates] Lat: %.6f°, Lon: %.6f°, Alt: %.2fmnn’, lla(1), lla(2), lla(3));
show3D(scene, ‘Parent’, ax, ‘FastUpdate’, true);
drawnow limitrate;
advance(scene);
endhttps://kr.mathworks.com/help/nav/ug/simulate-gnss-multipath-effects-on-uav-flying-in-urban-environment.html
I would like to refer to the example of matlab above to create a user who is statically fixed in the middle of the map, not a user who moves along the trajectory.
So I modified it a little bit and wrote the code, and when I run it, the figure comes out well, but there’s an unknown error, so I need some help.
Error using fusion.internal.GPSSensorBase/validateInputsImpl (line 302)
Expected input to be an array with number of columns equal to 3.
Error in deepseek_v01 (line 31)
[lla, velocity] = gps(position, zeros(1,3));
^^^^^^^^^^^^^^^^^^^^^^^^^
I’m getting this error, and I’m curious about the solution. I’m also curious if there’s any problem even if I ignore the error and use it.
The .osm file I use is not attached, so you can use the .osm file that Matlab supports by default.
referenceLocation = [37.498759 127.027487 0];
scene = uavScenario(‘ReferenceLocation’, referenceLocation, ‘UpdateRate’, 10, ‘StopTime’, Inf);
buildingColor = [0.8 0.8 0.8];
if isfile(‘gangnam_11exit.osm’)
addMesh(scene, ‘buildings’, {‘gangnam_11exit.osm’, [-250 250], [-250 250], ‘auto’}, buildingColor);
else
addMesh(scene, ‘buildings’, {‘random’, [-150 150], [-150 150], [10 50]}, buildingColor);
end
user = uavPlatform(‘User’, scene, ‘ReferenceFrame’, ‘ENU’, ‘InitialPosition’, [0 0 80]);
gps = gpsSensor(‘UpdateRate’, 10, …
‘ReferenceLocation’, referenceLocation, …
‘HorizontalPositionAccuracy’, 1.6, …
‘VerticalPositionAccuracy’, 3.0, …
‘VelocityAccuracy’, 0.1);
fig = figure(‘Name’,’Static GNSS User’);
ax = show3D(scene);
hold(ax, ‘on’);
axis(ax, ‘equal’);
grid(ax, ‘on’);
view(ax, 3);
plot3(ax, 0, 0, 80, ‘ro’, ‘MarkerSize’, 12, ‘MarkerFaceColor’, ‘r’);
setup(scene);
while ishandle(fig)
[position, orientation] = user.read();
[lla, velocity] = gps(position, zeros(1,3));
fprintf(‘[ENU Position] X: %.2fm, Y: %.2fm, Z: %.2fmn’, position(1), position(2), position(3));
fprintf(‘[GPS Coordinates] Lat: %.6f°, Lon: %.6f°, Alt: %.2fmnn’, lla(1), lla(2), lla(3));
show3D(scene, ‘Parent’, ax, ‘FastUpdate’, true);
drawnow limitrate;
advance(scene);
end https://kr.mathworks.com/help/nav/ug/simulate-gnss-multipath-effects-on-uav-flying-in-urban-environment.html
I would like to refer to the example of matlab above to create a user who is statically fixed in the middle of the map, not a user who moves along the trajectory.
So I modified it a little bit and wrote the code, and when I run it, the figure comes out well, but there’s an unknown error, so I need some help.
Error using fusion.internal.GPSSensorBase/validateInputsImpl (line 302)
Expected input to be an array with number of columns equal to 3.
Error in deepseek_v01 (line 31)
[lla, velocity] = gps(position, zeros(1,3));
^^^^^^^^^^^^^^^^^^^^^^^^^
I’m getting this error, and I’m curious about the solution. I’m also curious if there’s any problem even if I ignore the error and use it.
The .osm file I use is not attached, so you can use the .osm file that Matlab supports by default.
referenceLocation = [37.498759 127.027487 0];
scene = uavScenario(‘ReferenceLocation’, referenceLocation, ‘UpdateRate’, 10, ‘StopTime’, Inf);
buildingColor = [0.8 0.8 0.8];
if isfile(‘gangnam_11exit.osm’)
addMesh(scene, ‘buildings’, {‘gangnam_11exit.osm’, [-250 250], [-250 250], ‘auto’}, buildingColor);
else
addMesh(scene, ‘buildings’, {‘random’, [-150 150], [-150 150], [10 50]}, buildingColor);
end
user = uavPlatform(‘User’, scene, ‘ReferenceFrame’, ‘ENU’, ‘InitialPosition’, [0 0 80]);
gps = gpsSensor(‘UpdateRate’, 10, …
‘ReferenceLocation’, referenceLocation, …
‘HorizontalPositionAccuracy’, 1.6, …
‘VerticalPositionAccuracy’, 3.0, …
‘VelocityAccuracy’, 0.1);
fig = figure(‘Name’,’Static GNSS User’);
ax = show3D(scene);
hold(ax, ‘on’);
axis(ax, ‘equal’);
grid(ax, ‘on’);
view(ax, 3);
plot3(ax, 0, 0, 80, ‘ro’, ‘MarkerSize’, 12, ‘MarkerFaceColor’, ‘r’);
setup(scene);
while ishandle(fig)
[position, orientation] = user.read();
[lla, velocity] = gps(position, zeros(1,3));
fprintf(‘[ENU Position] X: %.2fm, Y: %.2fm, Z: %.2fmn’, position(1), position(2), position(3));
fprintf(‘[GPS Coordinates] Lat: %.6f°, Lon: %.6f°, Alt: %.2fmnn’, lla(1), lla(2), lla(3));
show3D(scene, ‘Parent’, ax, ‘FastUpdate’, true);
drawnow limitrate;
advance(scene);
end matlab, gnss, gps, optimization, error MATLAB Answers — New Questions
MPU6050 Arduino Uno Simulink
I have a code to get the MPU6050 working using Matlab, but now I would like to run it on Simulink, but I keep hitting dead ends. Here is my Matlab code if anyone out there can help me:
%% setup
a=arduino;
mpu=i2cdev(a,’0x68′);
writeRegister(mpu, hex2dec(‘B6′), hex2dec(’00’), ‘int16’); %reset
data=zeros(10000,14,’int8′); %prelocating
j=1;
%% loop
while(true)
x=1;
for i=59:72 % 14 Data Registers for Accel,Temp,Gyro
data(j,x)= readRegister(mpu, i, ‘int8’);
x=x+1;
end
y=swapbytes(typecast(data(j,:), ‘int16’));
acc_x(j)=double(y(1));
acc_y(j)=double(y(2));
acc_z(j)=double(y(3));
j=j+1;
end
How can I write this in SIMULINK?
The loop is the easy part, I can just put it into a Matlab function block (except for readRegister)… I just can’t figure out the setup part in Simulink at all. I have tryed using the I2C Read block, but to no avail. Please help. And before you ask, I do have both the Arduino packages installed (for Matlab, and Simulink).
Again Please HELP!!!I have a code to get the MPU6050 working using Matlab, but now I would like to run it on Simulink, but I keep hitting dead ends. Here is my Matlab code if anyone out there can help me:
%% setup
a=arduino;
mpu=i2cdev(a,’0x68′);
writeRegister(mpu, hex2dec(‘B6′), hex2dec(’00’), ‘int16’); %reset
data=zeros(10000,14,’int8′); %prelocating
j=1;
%% loop
while(true)
x=1;
for i=59:72 % 14 Data Registers for Accel,Temp,Gyro
data(j,x)= readRegister(mpu, i, ‘int8’);
x=x+1;
end
y=swapbytes(typecast(data(j,:), ‘int16’));
acc_x(j)=double(y(1));
acc_y(j)=double(y(2));
acc_z(j)=double(y(3));
j=j+1;
end
How can I write this in SIMULINK?
The loop is the easy part, I can just put it into a Matlab function block (except for readRegister)… I just can’t figure out the setup part in Simulink at all. I have tryed using the I2C Read block, but to no avail. Please help. And before you ask, I do have both the Arduino packages installed (for Matlab, and Simulink).
Again Please HELP!!! I have a code to get the MPU6050 working using Matlab, but now I would like to run it on Simulink, but I keep hitting dead ends. Here is my Matlab code if anyone out there can help me:
%% setup
a=arduino;
mpu=i2cdev(a,’0x68′);
writeRegister(mpu, hex2dec(‘B6′), hex2dec(’00’), ‘int16’); %reset
data=zeros(10000,14,’int8′); %prelocating
j=1;
%% loop
while(true)
x=1;
for i=59:72 % 14 Data Registers for Accel,Temp,Gyro
data(j,x)= readRegister(mpu, i, ‘int8’);
x=x+1;
end
y=swapbytes(typecast(data(j,:), ‘int16’));
acc_x(j)=double(y(1));
acc_y(j)=double(y(2));
acc_z(j)=double(y(3));
j=j+1;
end
How can I write this in SIMULINK?
The loop is the easy part, I can just put it into a Matlab function block (except for readRegister)… I just can’t figure out the setup part in Simulink at all. I have tryed using the I2C Read block, but to no avail. Please help. And before you ask, I do have both the Arduino packages installed (for Matlab, and Simulink).
Again Please HELP!!! mpu, mpu6050, accelerometer, arduino, uno, arduino uno, simulink, matlab, gyroscope, readregister, writeregister, i2c, i2cdev MATLAB Answers — New Questions
Is it really a license violation to effectively make MATLAB free idle licenses in less then 4 hours?
This question originates from a reply in the following: thread.
I once wrote a python script that would try to get a floating license every 10 secs. From that idea now I thought maybe I can do similar one that would identify if MATLAB is idle more than 5 minutes or so, and then it would terminate the MATLAB.
Would this be a license violation, or is it just strictly altering the Network License Manager to timeout in less than 4 hours?This question originates from a reply in the following: thread.
I once wrote a python script that would try to get a floating license every 10 secs. From that idea now I thought maybe I can do similar one that would identify if MATLAB is idle more than 5 minutes or so, and then it would terminate the MATLAB.
Would this be a license violation, or is it just strictly altering the Network License Manager to timeout in less than 4 hours? This question originates from a reply in the following: thread.
I once wrote a python script that would try to get a floating license every 10 secs. From that idea now I thought maybe I can do similar one that would identify if MATLAB is idle more than 5 minutes or so, and then it would terminate the MATLAB.
Would this be a license violation, or is it just strictly altering the Network License Manager to timeout in less than 4 hours? network license manager, license MATLAB Answers — New Questions
Plot not showing all results
I need my graph to show the results from all lengths (i.e. all 5 coloured lines) but am only outputting 2 lines for one of the graphs. Both my code and the graphs are below. Please help.
clc; clear; close all;
%% Section 1: Development of Applied Thermal and Solute Concentration Fields
L_values = linspace(0.03, 0.25, 5); % Separation distance [m] (5 samples for clarity)
Nx = 200; % Number of spatial steps
Nt = 5000; % Number of time steps
dt = 0.005; % Time step size
% Thermal diffusivity values for aluminum alloy (m^2/s)
alpha_L = 3.26e-5; % Liquid phase
alpha_S = 6.58e-5; % Solid phase
% Solute diffusivity in liquid (m^2/s)
D_L = 1e-11;
% Interface velocity range
V = linspace(1.67e-5, 1.67e-4, 20); % Velocity range in m/s
% Partition coefficient & solute parameters
k = 0.85; % Partition coefficient
c0 = 7.26; % Initial solute concentration (wt% Al)
m = -3; % Liquidus slope (K/wt% Al)
[G_range, V_mesh] = meshgrid(linspace(1e4, 1e6, 20), V);
delta_c = sqrt(D_L ./ V_mesh); % Solute boundary layer thickness
G_critical = -2 * m * c0 ./ delta_c; % Constitutional gradient
%% Section 2: Initialize Figures
figure(1); hold on; % Temperature distribution plot
figure(2); hold on; % Solute concentration plot
%% Section 3: Loop Over Different L Values
for L = L_values
dx = L / Nx; % Spatial step size
x = linspace(0, L, Nx); % Position array
s = 0.02; % Initial interface position
% Initialize temperature profile
T = zeros(Nx, 1);
T(1:Nx/2) = linspace(1450, 1350, Nx/2); % Melt zone
T(Nx/2+1:end) = linspace(1150, 900, Nx/2); % Cold zone
%% Section 4: Applied Thermal Gradient (Finite Difference)
for t = 1:Nt
T_new = T;
for i = 2:Nx-1
if x(i) < s
T_new(i) = T(i) + alpha_S * dt / dx^2 * (T(i+1) – 2*T(i) + T(i-1));
else
T_new(i) = T(i) + alpha_L * dt / dx^2 * (T(i+1) – 2*T(i) + T(i-1));
end
end
T = T_new;
s = s + V(1) * dt; % Update interface position
end
%% Section 5: Plot Results for Each L
figure(1); % ensuring we’re plotting on the right figure
plot(x, T, ‘LineWidth’, 2, ‘DisplayName’, sprintf(‘L = %.2f m’, L));
figure(2);
plot(x, linspace(c0, c0 * k, Nx), ‘LineWidth’, 2, ‘DisplayName’, sprintf(‘L = %.2f m’, L));
end
%% Section 6: Finalize Temperature Plot
figure(1);
xlabel(‘Position (m)’); ylabel(‘Temperature (C)’);
title(‘Temperature Distribution for Different L Values’);
grid on; legend show; hold off;
%% Section 7: Finalize Solute Concentration Plot
figure(2);
xlabel(‘Position (m)’); ylabel(‘Solute Concentration (wt%)’);
title(‘Solute Concentration Distribution for Different L Values’);
grid on; legend show; hold off;I need my graph to show the results from all lengths (i.e. all 5 coloured lines) but am only outputting 2 lines for one of the graphs. Both my code and the graphs are below. Please help.
clc; clear; close all;
%% Section 1: Development of Applied Thermal and Solute Concentration Fields
L_values = linspace(0.03, 0.25, 5); % Separation distance [m] (5 samples for clarity)
Nx = 200; % Number of spatial steps
Nt = 5000; % Number of time steps
dt = 0.005; % Time step size
% Thermal diffusivity values for aluminum alloy (m^2/s)
alpha_L = 3.26e-5; % Liquid phase
alpha_S = 6.58e-5; % Solid phase
% Solute diffusivity in liquid (m^2/s)
D_L = 1e-11;
% Interface velocity range
V = linspace(1.67e-5, 1.67e-4, 20); % Velocity range in m/s
% Partition coefficient & solute parameters
k = 0.85; % Partition coefficient
c0 = 7.26; % Initial solute concentration (wt% Al)
m = -3; % Liquidus slope (K/wt% Al)
[G_range, V_mesh] = meshgrid(linspace(1e4, 1e6, 20), V);
delta_c = sqrt(D_L ./ V_mesh); % Solute boundary layer thickness
G_critical = -2 * m * c0 ./ delta_c; % Constitutional gradient
%% Section 2: Initialize Figures
figure(1); hold on; % Temperature distribution plot
figure(2); hold on; % Solute concentration plot
%% Section 3: Loop Over Different L Values
for L = L_values
dx = L / Nx; % Spatial step size
x = linspace(0, L, Nx); % Position array
s = 0.02; % Initial interface position
% Initialize temperature profile
T = zeros(Nx, 1);
T(1:Nx/2) = linspace(1450, 1350, Nx/2); % Melt zone
T(Nx/2+1:end) = linspace(1150, 900, Nx/2); % Cold zone
%% Section 4: Applied Thermal Gradient (Finite Difference)
for t = 1:Nt
T_new = T;
for i = 2:Nx-1
if x(i) < s
T_new(i) = T(i) + alpha_S * dt / dx^2 * (T(i+1) – 2*T(i) + T(i-1));
else
T_new(i) = T(i) + alpha_L * dt / dx^2 * (T(i+1) – 2*T(i) + T(i-1));
end
end
T = T_new;
s = s + V(1) * dt; % Update interface position
end
%% Section 5: Plot Results for Each L
figure(1); % ensuring we’re plotting on the right figure
plot(x, T, ‘LineWidth’, 2, ‘DisplayName’, sprintf(‘L = %.2f m’, L));
figure(2);
plot(x, linspace(c0, c0 * k, Nx), ‘LineWidth’, 2, ‘DisplayName’, sprintf(‘L = %.2f m’, L));
end
%% Section 6: Finalize Temperature Plot
figure(1);
xlabel(‘Position (m)’); ylabel(‘Temperature (C)’);
title(‘Temperature Distribution for Different L Values’);
grid on; legend show; hold off;
%% Section 7: Finalize Solute Concentration Plot
figure(2);
xlabel(‘Position (m)’); ylabel(‘Solute Concentration (wt%)’);
title(‘Solute Concentration Distribution for Different L Values’);
grid on; legend show; hold off; I need my graph to show the results from all lengths (i.e. all 5 coloured lines) but am only outputting 2 lines for one of the graphs. Both my code and the graphs are below. Please help.
clc; clear; close all;
%% Section 1: Development of Applied Thermal and Solute Concentration Fields
L_values = linspace(0.03, 0.25, 5); % Separation distance [m] (5 samples for clarity)
Nx = 200; % Number of spatial steps
Nt = 5000; % Number of time steps
dt = 0.005; % Time step size
% Thermal diffusivity values for aluminum alloy (m^2/s)
alpha_L = 3.26e-5; % Liquid phase
alpha_S = 6.58e-5; % Solid phase
% Solute diffusivity in liquid (m^2/s)
D_L = 1e-11;
% Interface velocity range
V = linspace(1.67e-5, 1.67e-4, 20); % Velocity range in m/s
% Partition coefficient & solute parameters
k = 0.85; % Partition coefficient
c0 = 7.26; % Initial solute concentration (wt% Al)
m = -3; % Liquidus slope (K/wt% Al)
[G_range, V_mesh] = meshgrid(linspace(1e4, 1e6, 20), V);
delta_c = sqrt(D_L ./ V_mesh); % Solute boundary layer thickness
G_critical = -2 * m * c0 ./ delta_c; % Constitutional gradient
%% Section 2: Initialize Figures
figure(1); hold on; % Temperature distribution plot
figure(2); hold on; % Solute concentration plot
%% Section 3: Loop Over Different L Values
for L = L_values
dx = L / Nx; % Spatial step size
x = linspace(0, L, Nx); % Position array
s = 0.02; % Initial interface position
% Initialize temperature profile
T = zeros(Nx, 1);
T(1:Nx/2) = linspace(1450, 1350, Nx/2); % Melt zone
T(Nx/2+1:end) = linspace(1150, 900, Nx/2); % Cold zone
%% Section 4: Applied Thermal Gradient (Finite Difference)
for t = 1:Nt
T_new = T;
for i = 2:Nx-1
if x(i) < s
T_new(i) = T(i) + alpha_S * dt / dx^2 * (T(i+1) – 2*T(i) + T(i-1));
else
T_new(i) = T(i) + alpha_L * dt / dx^2 * (T(i+1) – 2*T(i) + T(i-1));
end
end
T = T_new;
s = s + V(1) * dt; % Update interface position
end
%% Section 5: Plot Results for Each L
figure(1); % ensuring we’re plotting on the right figure
plot(x, T, ‘LineWidth’, 2, ‘DisplayName’, sprintf(‘L = %.2f m’, L));
figure(2);
plot(x, linspace(c0, c0 * k, Nx), ‘LineWidth’, 2, ‘DisplayName’, sprintf(‘L = %.2f m’, L));
end
%% Section 6: Finalize Temperature Plot
figure(1);
xlabel(‘Position (m)’); ylabel(‘Temperature (C)’);
title(‘Temperature Distribution for Different L Values’);
grid on; legend show; hold off;
%% Section 7: Finalize Solute Concentration Plot
figure(2);
xlabel(‘Position (m)’); ylabel(‘Solute Concentration (wt%)’);
title(‘Solute Concentration Distribution for Different L Values’);
grid on; legend show; hold off; graphs MATLAB Answers — New Questions
Making Enter trigger a button in a .mlapp dialog
I am using the multi-window app facility (documented here) to create a dialog box a little fancier than the ones intrinsically provided. It provides an edit field in which the user may type a file name. I would like to arrange it so that if the user presses Enter after typing the file name, it triggers the Load button. I find that, if the keyboard focus is in the dialog generally, a KeyPressFcn callback for that dialog will be triggered. But if the keyboard focus is in a specific edit field, it won’t. But that is precisely what I want! Is there a way?
function createComponents(app)
% Create MainDialog and hide until all components are created
app.MainDialog = uifigure(‘Visible’, ‘off’);
app.MainDialog.Position = [100 100 879 218];
app.MainDialog.Name = ‘MATLAB App’;
app.MainDialog.KeyPressFcn = createCallbackFcn(app, @LoadSaveButtonPushed, true);
% Create TitleLabel
app.TitleLabel = uilabel(app.MainDialog);
app.TitleLabel.HorizontalAlignment = ‘center’;
app.TitleLabel.FontSize = 24;
app.TitleLabel.Position = [364 164 154 32];
app.TitleLabel.Text = ‘Load Settings’;
% Create FileLabel
app.FileLabel = uilabel(app.MainDialog);
app.FileLabel.HorizontalAlignment = ‘right’;
app.FileLabel.Position = [68 102 27 22];
app.FileLabel.Text = ‘File:’;
% Create FileEditField
app.FileEditField = uieditfield(app.MainDialog, ‘text’);
app.FileEditField.Position = [110 102 622 22];
% Create LoadSaveButton
app.LoadSaveButton = uibutton(app.MainDialog, ‘push’);
app.LoadSaveButton.ButtonPushedFcn = createCallbackFcn(app, @LoadSaveButtonPushed, true);
app.LoadSaveButton.FontSize = 18;
app.LoadSaveButton.Position = [694 27 110 38];
app.LoadSaveButton.Text = ‘Load’;
% Create BrowseButton
app.BrowseButton = uibutton(app.MainDialog, ‘push’);
app.BrowseButton.ButtonPushedFcn = createCallbackFcn(app, @BrowseButtonPushed, true);
app.BrowseButton.Position = [763 102 100 23];
app.BrowseButton.Text = ‘Browse…’;
% Create CancelButton
app.CancelButton = uibutton(app.MainDialog, ‘push’);
app.CancelButton.ButtonPushedFcn = createCallbackFcn(app, @CancelButtonPushed, true);
app.CancelButton.FontSize = 18;
app.CancelButton.Position = [94 27 110 38];
app.CancelButton.Text = ‘Cancel’;
% Show the figure after all components are created
app.MainDialog.Visible = ‘on’;
endI am using the multi-window app facility (documented here) to create a dialog box a little fancier than the ones intrinsically provided. It provides an edit field in which the user may type a file name. I would like to arrange it so that if the user presses Enter after typing the file name, it triggers the Load button. I find that, if the keyboard focus is in the dialog generally, a KeyPressFcn callback for that dialog will be triggered. But if the keyboard focus is in a specific edit field, it won’t. But that is precisely what I want! Is there a way?
function createComponents(app)
% Create MainDialog and hide until all components are created
app.MainDialog = uifigure(‘Visible’, ‘off’);
app.MainDialog.Position = [100 100 879 218];
app.MainDialog.Name = ‘MATLAB App’;
app.MainDialog.KeyPressFcn = createCallbackFcn(app, @LoadSaveButtonPushed, true);
% Create TitleLabel
app.TitleLabel = uilabel(app.MainDialog);
app.TitleLabel.HorizontalAlignment = ‘center’;
app.TitleLabel.FontSize = 24;
app.TitleLabel.Position = [364 164 154 32];
app.TitleLabel.Text = ‘Load Settings’;
% Create FileLabel
app.FileLabel = uilabel(app.MainDialog);
app.FileLabel.HorizontalAlignment = ‘right’;
app.FileLabel.Position = [68 102 27 22];
app.FileLabel.Text = ‘File:’;
% Create FileEditField
app.FileEditField = uieditfield(app.MainDialog, ‘text’);
app.FileEditField.Position = [110 102 622 22];
% Create LoadSaveButton
app.LoadSaveButton = uibutton(app.MainDialog, ‘push’);
app.LoadSaveButton.ButtonPushedFcn = createCallbackFcn(app, @LoadSaveButtonPushed, true);
app.LoadSaveButton.FontSize = 18;
app.LoadSaveButton.Position = [694 27 110 38];
app.LoadSaveButton.Text = ‘Load’;
% Create BrowseButton
app.BrowseButton = uibutton(app.MainDialog, ‘push’);
app.BrowseButton.ButtonPushedFcn = createCallbackFcn(app, @BrowseButtonPushed, true);
app.BrowseButton.Position = [763 102 100 23];
app.BrowseButton.Text = ‘Browse…’;
% Create CancelButton
app.CancelButton = uibutton(app.MainDialog, ‘push’);
app.CancelButton.ButtonPushedFcn = createCallbackFcn(app, @CancelButtonPushed, true);
app.CancelButton.FontSize = 18;
app.CancelButton.Position = [94 27 110 38];
app.CancelButton.Text = ‘Cancel’;
% Show the figure after all components are created
app.MainDialog.Visible = ‘on’;
end I am using the multi-window app facility (documented here) to create a dialog box a little fancier than the ones intrinsically provided. It provides an edit field in which the user may type a file name. I would like to arrange it so that if the user presses Enter after typing the file name, it triggers the Load button. I find that, if the keyboard focus is in the dialog generally, a KeyPressFcn callback for that dialog will be triggered. But if the keyboard focus is in a specific edit field, it won’t. But that is precisely what I want! Is there a way?
function createComponents(app)
% Create MainDialog and hide until all components are created
app.MainDialog = uifigure(‘Visible’, ‘off’);
app.MainDialog.Position = [100 100 879 218];
app.MainDialog.Name = ‘MATLAB App’;
app.MainDialog.KeyPressFcn = createCallbackFcn(app, @LoadSaveButtonPushed, true);
% Create TitleLabel
app.TitleLabel = uilabel(app.MainDialog);
app.TitleLabel.HorizontalAlignment = ‘center’;
app.TitleLabel.FontSize = 24;
app.TitleLabel.Position = [364 164 154 32];
app.TitleLabel.Text = ‘Load Settings’;
% Create FileLabel
app.FileLabel = uilabel(app.MainDialog);
app.FileLabel.HorizontalAlignment = ‘right’;
app.FileLabel.Position = [68 102 27 22];
app.FileLabel.Text = ‘File:’;
% Create FileEditField
app.FileEditField = uieditfield(app.MainDialog, ‘text’);
app.FileEditField.Position = [110 102 622 22];
% Create LoadSaveButton
app.LoadSaveButton = uibutton(app.MainDialog, ‘push’);
app.LoadSaveButton.ButtonPushedFcn = createCallbackFcn(app, @LoadSaveButtonPushed, true);
app.LoadSaveButton.FontSize = 18;
app.LoadSaveButton.Position = [694 27 110 38];
app.LoadSaveButton.Text = ‘Load’;
% Create BrowseButton
app.BrowseButton = uibutton(app.MainDialog, ‘push’);
app.BrowseButton.ButtonPushedFcn = createCallbackFcn(app, @BrowseButtonPushed, true);
app.BrowseButton.Position = [763 102 100 23];
app.BrowseButton.Text = ‘Browse…’;
% Create CancelButton
app.CancelButton = uibutton(app.MainDialog, ‘push’);
app.CancelButton.ButtonPushedFcn = createCallbackFcn(app, @CancelButtonPushed, true);
app.CancelButton.FontSize = 18;
app.CancelButton.Position = [94 27 110 38];
app.CancelButton.Text = ‘Cancel’;
% Show the figure after all components are created
app.MainDialog.Visible = ‘on’;
end dialog MATLAB Answers — New Questions
How to Send Outlook Newsletters with Email Communication Services
Use ECS to Send Outlook Newsletters to Thousands of External Recipients
After writing about the new Outlook Newsletters app last week, I was asked if any workaround existed to allow newsletters to be sent to external recipients. If you only need to send a newsletter to a few external recipients, the easy answer is to create an Exchange Online mail contact for each recipient. Assuming that a distribution list is used to distribute a newsletter, the mail contacts can be added to the distribution list membership and so receive their copy when the Exchange transport service expands the membership to dispatch the newsletter to its final destinations.
This approach works for any external SMTP address, defined as an SMTP address that doesn’t belong to one of the accepted domains registered for the tenant. I often use the technique to capture copies of messages sent to distribution lists as posts in a Teams channel. Figure 1 shows an example of such a mail contact. Note that the contact is hidden from address books to prevent its discovery by users who browse the GAL.
Scaling Up to Cope with External Recipients
However, adding individual mail contacts for external recipients is not a method that’s easy to scale up. You can automate the process with PowerShell by using the New-MailContact cmdlet to create mail contacts and the Add-DistributionGroupMember cmdlet to add mail contacts to a distribution list, but that’s probably too much trouble for the delivered value.
Besides, using distribution lists to send messages to large numbers of external recipients will run foul of the new tenant external recipient rate limit (delayed for implementation until 1 May 2025), not to mention the individual mailbox external recipient rate limit that’s due for implementation in October 2025. A better solution is required.
Sending an Outlook Newsletter with Azure Email Communication Services
Azure Email Communication Services (ECS) is a pay-as-you-go service based on Exchange Online that’s expressly intended to process external email sent at high volumes, like newsletters directed at customers. The problem is that Outlook Newsletters use “regular” Exchange Online and have no connection to ECS, so we need a way to bridge the gap.
My solution, imperfect and manual as it is, goes like this:
- Create and send an Outlook newsletter as normal.
- Open the copy of the newsletter in the Sent Items folder of the author’s mailbox (or the copy received by any recipient).
- Copy the HTML body and paste it into a Word document. Make sure to select the keep source formatting option to remain the layout. The result should look something like the document shown in Figure 2.
Save the Word document as a web page (HTML file). The output HTML file should contain all the formatting instructions and pictures for the newsletter.
If you look at the script referenced in the article about ECS, you’ll see that the setup necessary to send a message through ECS using PowerShell is very similar to sending a message with the Microsoft Graph PowerShell SDK. Essentially, you create and populate a message structure before submitting it to ECS to be sent. Part of the message structure is the message body, which can be formatted as HTML.
When I worked with ECS last year, I discovered that ECS was very sensitive to the HTML in a message structure and refused to process HTML generated from Word. That issue seems to have gone away because I was able to load the HTML for the Outlook newsletter into a string variable like this:
[string]$HtmlContent = Get-Content Newsletter.htm
Next, I amended the script code to change the message subject and use the HTML content loaded in from the newsletter and used the code to send newsletters to several hundred email addresses as a test. Here’s the code that does the work.
[int]$i = 0
Write-Host "Processing messages... "
ForEach ($Recipient in $RecipientList.Email) {
# Construct the TO addresses for the message
[array]$ToRecipientAddress = Get-MessageRecipients -ListOfAddresses $Recipient
$i++
Write-Host ("Sending email to {0} ({1}/{2})" -f $Recipient, $i, $RecipientList.count)
# Build a hash table containing the settings for the message
$Email = @{
# The sender's email address
senderAddress = $senderAddress
# Create a unique identifier for this message
headers = @{
id = ("{0}-{1}" -f (Get-Date -format s), $ToRecipientAddress.address)
}
# The content of the email, including the subject and HTML body
content = @{
subject = "Office 365 for IT February 2025 Articles"
html = $HtmlContent
}
# The recipients of the email
recipients = @{
to = $ToRecipientAddress
bcc = @(
@{
address = "o365itprosrenewals@office365itpros.com"
displayname = "Office 365 for IT Pros Support"
}
)
}
# The reply-to addresses for the email - doesn't have to be the same as the sender address
ReplyTo = @(
@{
address = "o365itprosrenewals@office365itpros.com"
displayName = "Office 365 for IT Pros Support"
}
)
userEngagementTrackingDisabled = $false
}
# Convert the email settings structure to JSON
$EmailSettings = $Email | ConvertTo-Json -Depth 10
$MailStatus = $null
# Define the URI to post to when sending a message with ECS.
# The same URI is used for all messages. The body of the message dictates who receives the email
$Uri = ("https://{0}/emails:send?api-version=2023-03-31" -f $CommunicationEndpoint)
# Submit the message to the Email Communication service
try {
$MailStatus = Invoke-RestMethod -Uri $uri -Method Post -Headers $headers -Body $EmailSettings -UseBasicParsing
}
catch {
Write-Host ("Failed to send email to {0}" -f $Recipient)
}
}
Start-Sleep -Seconds 2
$Recipient = $null
}
Combine Different Components to Solve a Problem
The results aren’t perfect. Some email clients complain that the messages contain trackers (used by Outlook Newsletters to track the number of recipients that open newsletters. Some clients can’t display the inline graphics (Outlook classic does the best job). Tweaking of the HTML before it is processed by ECS might fix these problems. It’s worth noting that we’re dealing with preview software sending messages through an unsupported route, so some difficulties are to be expected.
Even though this is a use that Microsoft doesn’t support, it seems possible to use Outlook Newsletters for what it’s good at (creating nice-looking newsletters) and send the output to as many external recipients as you want through ECS. Given the imminent limitation for external recipient traffic being imposed by Exchange Online, using ECS might just be a solution for those who depend on being able to send high volumes of email to customers. ECS is harder to set up than simply sending messages from Outlook, and its traffic costs money, but ECS does get the job done.
After Microsoft ships Outlook Newsletters, they might support the use of ECS. It seems like a sensible next step!
Need some assistance to write and manage PowerShell scripts for Microsoft 365? Get a copy of the Automating Microsoft 365 with PowerShell eBook, available standalone or as part of the Office 365 for IT Pros eBook bundle.
IFFT results in wrong frequency
Hello,
I have a relatively simple code (see below).
What I don’t understand: It seem if I change the sampling frequency (Fs) or the signal length(L) the output of the IFFT seems to change (I used dummy values for this example) – can anyone explain to me why? So instead of 400 Hz it might show 360 Hz.
frequency =[0,400,900,2100]
FFT= [0 0; 100 -20;220 -2;50 4]
Fs = 90000
T = 1/Fs
L= 5000
t = (0:L-1)*T
X= zeros(1,L);
for (k=2:length(frequency))
X(round(frequency(k)*T*L)) = double(FFT(k,1))+i*double(FFT(k,2))
end
time= ifft(X, ‘symmetric’)*L/2Hello,
I have a relatively simple code (see below).
What I don’t understand: It seem if I change the sampling frequency (Fs) or the signal length(L) the output of the IFFT seems to change (I used dummy values for this example) – can anyone explain to me why? So instead of 400 Hz it might show 360 Hz.
frequency =[0,400,900,2100]
FFT= [0 0; 100 -20;220 -2;50 4]
Fs = 90000
T = 1/Fs
L= 5000
t = (0:L-1)*T
X= zeros(1,L);
for (k=2:length(frequency))
X(round(frequency(k)*T*L)) = double(FFT(k,1))+i*double(FFT(k,2))
end
time= ifft(X, ‘symmetric’)*L/2 Hello,
I have a relatively simple code (see below).
What I don’t understand: It seem if I change the sampling frequency (Fs) or the signal length(L) the output of the IFFT seems to change (I used dummy values for this example) – can anyone explain to me why? So instead of 400 Hz it might show 360 Hz.
frequency =[0,400,900,2100]
FFT= [0 0; 100 -20;220 -2;50 4]
Fs = 90000
T = 1/Fs
L= 5000
t = (0:L-1)*T
X= zeros(1,L);
for (k=2:length(frequency))
X(round(frequency(k)*T*L)) = double(FFT(k,1))+i*double(FFT(k,2))
end
time= ifft(X, ‘symmetric’)*L/2 fft MATLAB Answers — New Questions
I need help with solving the task in Simulink + Stateflow
Hello everyone. I have this task, does anyone have any ideas on how to do this or ready-made examples of something like this?
Need to make the model of specified below system and make software test.
System description
Input:
– only one input
– during all time input gets a series of data
– at each cycle input signal is either 0 or 1
– type boolean
Output:
– only one output
– at each cycle time, the system sets the output 0 or 1 that depends on
conditions
– the system sets the output to 1 if the sum of 1 in the last input
series was odd.
– in other cases, the system sets the output to 0
– type boolean
Definition of the series:
Series starts with 2 nd 1 in sequence (1 | 1).
Series ends after 2 nd 0 in sequence (0 0 |).
Example of input data and series:
input 0 1 0 1 | 1 1 1 0 0 |1 0 0 1| 1 1 1 0 1 0 0| 0 0
output 0 0 0 0 | 0 0 0 0 1 |1 1 1 1| 1 1 1 1 1 1 0| 0 0
Requirements to the software models:
* should be done in simulink and stateflow
* test example above should be included as test caseHello everyone. I have this task, does anyone have any ideas on how to do this or ready-made examples of something like this?
Need to make the model of specified below system and make software test.
System description
Input:
– only one input
– during all time input gets a series of data
– at each cycle input signal is either 0 or 1
– type boolean
Output:
– only one output
– at each cycle time, the system sets the output 0 or 1 that depends on
conditions
– the system sets the output to 1 if the sum of 1 in the last input
series was odd.
– in other cases, the system sets the output to 0
– type boolean
Definition of the series:
Series starts with 2 nd 1 in sequence (1 | 1).
Series ends after 2 nd 0 in sequence (0 0 |).
Example of input data and series:
input 0 1 0 1 | 1 1 1 0 0 |1 0 0 1| 1 1 1 0 1 0 0| 0 0
output 0 0 0 0 | 0 0 0 0 1 |1 1 1 1| 1 1 1 1 1 1 0| 0 0
Requirements to the software models:
* should be done in simulink and stateflow
* test example above should be included as test case Hello everyone. I have this task, does anyone have any ideas on how to do this or ready-made examples of something like this?
Need to make the model of specified below system and make software test.
System description
Input:
– only one input
– during all time input gets a series of data
– at each cycle input signal is either 0 or 1
– type boolean
Output:
– only one output
– at each cycle time, the system sets the output 0 or 1 that depends on
conditions
– the system sets the output to 1 if the sum of 1 in the last input
series was odd.
– in other cases, the system sets the output to 0
– type boolean
Definition of the series:
Series starts with 2 nd 1 in sequence (1 | 1).
Series ends after 2 nd 0 in sequence (0 0 |).
Example of input data and series:
input 0 1 0 1 | 1 1 1 0 0 |1 0 0 1| 1 1 1 0 1 0 0| 0 0
output 0 0 0 0 | 0 0 0 0 1 |1 1 1 1| 1 1 1 1 1 1 0| 0 0
Requirements to the software models:
* should be done in simulink and stateflow
* test example above should be included as test case simulink, stateflow MATLAB Answers — New Questions
csvwrite error: Undefined function ‘real’
I wrote a code to ask the user for information on the periodic table and put it into a struct. That all worked just fine. But I now need to write it to a cvs file and thats where it is not working.
Im getting the error: "Underfind function ‘real’ for input arguments of type ‘struct’".
The code where the error(s) are occuring
<</matlabcentral/answers/uploaded_files/112691/matlab.PNG>>
Im not too familiar with cvs. So am I not doing it right or am I hitting an error because of the way I wrote the code and how can I fix it?I wrote a code to ask the user for information on the periodic table and put it into a struct. That all worked just fine. But I now need to write it to a cvs file and thats where it is not working.
Im getting the error: "Underfind function ‘real’ for input arguments of type ‘struct’".
The code where the error(s) are occuring
<</matlabcentral/answers/uploaded_files/112691/matlab.PNG>>
Im not too familiar with cvs. So am I not doing it right or am I hitting an error because of the way I wrote the code and how can I fix it? I wrote a code to ask the user for information on the periodic table and put it into a struct. That all worked just fine. But I now need to write it to a cvs file and thats where it is not working.
Im getting the error: "Underfind function ‘real’ for input arguments of type ‘struct’".
The code where the error(s) are occuring
<</matlabcentral/answers/uploaded_files/112691/matlab.PNG>>
Im not too familiar with cvs. So am I not doing it right or am I hitting an error because of the way I wrote the code and how can I fix it? cvswrite MATLAB Answers — New Questions
Why are the states not executing properly in the Simulink function?
I am using three subsystems: one contains a Stateflow chart with states, and the other two contain Simulink functions, each with its own Stateflow block. I am using nested Simulink functions and calling them through Stateflow. However, the states are not executing properly inside the Simulink functions. Can anyone help me understand why this is happening and what might be causing it?
I have attached some snapshots and the .slx file for your reference and clarification.I am using three subsystems: one contains a Stateflow chart with states, and the other two contain Simulink functions, each with its own Stateflow block. I am using nested Simulink functions and calling them through Stateflow. However, the states are not executing properly inside the Simulink functions. Can anyone help me understand why this is happening and what might be causing it?
I have attached some snapshots and the .slx file for your reference and clarification. I am using three subsystems: one contains a Stateflow chart with states, and the other two contain Simulink functions, each with its own Stateflow block. I am using nested Simulink functions and calling them through Stateflow. However, the states are not executing properly inside the Simulink functions. Can anyone help me understand why this is happening and what might be causing it?
I have attached some snapshots and the .slx file for your reference and clarification. stateflow, simulink, function, simulink functions, matlab function MATLAB Answers — New Questions
How to display struct along filed?
step info of any transfer function is displayed like this,
S =
RiseTime: 6.2550e-06,
SettlingTime: 4.8543e-04,
Overshoot: 85.3868,
PeakTime: 2.0384e-05,
i want to display this whole information in msgbox as string or in static box in GUI.
Is there any way to display it in msgbox or static box ??
Please help.step info of any transfer function is displayed like this,
S =
RiseTime: 6.2550e-06,
SettlingTime: 4.8543e-04,
Overshoot: 85.3868,
PeakTime: 2.0384e-05,
i want to display this whole information in msgbox as string or in static box in GUI.
Is there any way to display it in msgbox or static box ??
Please help. step info of any transfer function is displayed like this,
S =
RiseTime: 6.2550e-06,
SettlingTime: 4.8543e-04,
Overshoot: 85.3868,
PeakTime: 2.0384e-05,
i want to display this whole information in msgbox as string or in static box in GUI.
Is there any way to display it in msgbox or static box ??
Please help. transfer function, struct, cell, table MATLAB Answers — New Questions
System File Checker (SFC) incorrectly flags Windows Defender PowerShell module files as corrupted – Microsoft Support
Discusses that System File Checker in Windows 10 incorrectly flags files that are part of the Windows Defender PowerShell module as corrupted or damaged.
Microsoft Imposes 1-Year Retention for Teams Meeting Attendance Reports
Attendance Report Retention Policy Already in Force
Microsoft decision (announced in message center notification MC1022529 on March 4, 2025) to implement a retention policy for meeting attendance reports is interesting on multiple levels. The title of the notification is misleading because this is a new rather than an updated retention policy.
The attendance report retention policy is in force now and means that “all meeting attendance reports will be stored for one year after meeting end date to align with the Microsoft privacy policy.” I don’t see any specific mention of meeting attendance reports in Microsoft’s privacy policy, but I’m sure it’s covered somewhere. At least, it is to the satisfaction of Microsoft’s lawyers.
The term “retention policy” can confuse because it usually refers to the policies managed by Microsoft Purview data lifecycle management, aka Microsoft 365 retention policies. Teams chats and channel conversations can be managed by Microsoft 365 retention policies, but in this case, the retention policies are specific to Teams, just like the retention applied to Teams meeting recordings.
Attendance Report Basics
Attendance reports are available to meeting organizers. They can also be accessed programmatically using Graph APIs. In the case of meeting recordings, Microsoft research discovered that very few recordings were viewed more than 60 days after an event. It seems likely that exactly the same case pertains for attendance reports.
I doubt that many organizers go back and check the attendance for long-finished meetings. Certainly, organizers possibly review the attendance report for some meetings, but I don’t think this is common practice. Those who do can see details like the time meeting attendees joined and left the meeting, and if they reacted during the event (Figure 1).
Clicking on an attendee reveals details of that person’s “engagement” with the meetings (Figure 2). Some are less effusive during calls and dislike using reactions to express their view on proceedings. Others are more demonstrative. It’s all very much a personal choice, as is enabling cameras during calls.
Downloading Attendance Report Data
The download option for attendance reports preserves the attendance report data in a CSV file. If you want to preserve information about meetings held before November 1, 2024, you have until late August 2025 to download that data. That’s curious, because a one-year retention policy implies that these reports should be available for a full year. For instance, the attendance reports for meetings held in October 2024 should be available until October 2025, and so on. Tenants can’t change the retention period, alter the retention period, or influence when retention jobs run to remove attendance reports.
My assumption is that Microsoft began stamping attendance reports with retention dates on or around November 1, 2024, and took the decision to run a one-time clean-up of older attendance reports on some unspecified date in late August 2025. Attendance reports have been around for several years. Microsoft discarded the old format in February 2021 and have been tweaking the current format ever since. The one-time cleanup operation will set a baseline for ongoing retention in the future.
No Option to Avoid
Microsoft 365 tenant can’t avoid the new attendance report retention policy. The justification for the new policy is Microsoft’s privacy policy and it’s probably a justifiable course of action considering the probability that people will want to go back and view old attendance data years after an event. Besides, organizers can preserve attendance data if they need to, so there’s not much to complain about.
Insight like this doesn’t come easily. You’ve got to know the technology and understand how to look behind the scenes. Benefit from the knowledge and experience of the Office 365 for IT Pros team by subscribing to the best eBook covering Office 365 and the wider Microsoft 365 ecosystem.
