Hey community, I have two variables with <10 x 1> double data. I am to plot these two in a plot, but would like to have the axes to be intersecting each other in origin (0,0). Instead in the axes are shown with intersecting at for example (-2000,-6), my lowest x-value is -1200, lowest y-value is -6. Here it would be great to have the x-axis through y=0, so that differences from y=0 easily can be seen graphically.

How would I do that, is there a command you could use in the script written, to make it move the axes? I have a large script to evaluate a lot of graphs in, so a MATLAB-command would be preferable to a tool in the figure builder.

The (simple) code used is as following:

%% person5 – Puls
hold on
plot(person5_ethanol_ekgpuls_tid,person5_ethanol_ekgpuls,’g.-‘)
xlabel(‘Tid/Sek’)
ylabel(‘Blodtryk/MmHg’)
title(‘Forsøgsperson #5 Ethanol Ekg Puls’)

Hope that my question is understandable and that it can be done.Hey community, I have two variables with <10 x 1> double data. I am to plot these two in a plot, but would like to have the axes to be intersecting each other in origin (0,0). Instead in the axes are shown with intersecting at for example (-2000,-6), my lowest x-value is -1200, lowest y-value is -6. Here it would be great to have the x-axis through y=0, so that differences from y=0 easily can be seen graphically.

How would I do that, is there a command you could use in the script written, to make it move the axes? I have a large script to evaluate a lot of graphs in, so a MATLAB-command would be preferable to a tool in the figure builder.

The (simple) code used is as following:

%% person5 – Puls
hold on
plot(person5_ethanol_ekgpuls_tid,person5_ethanol_ekgpuls,’g.-‘)
xlabel(‘Tid/Sek’)
ylabel(‘Blodtryk/MmHg’)
title(‘Forsøgsperson #5 Ethanol Ekg Puls’)

Hope that my question is understandable and that it can be done. Hey community, I have two variables with <10 x 1> double data. I am to plot these two in a plot, but would like to have the axes to be intersecting each other in origin (0,0). Instead in the axes are shown with intersecting at for example (-2000,-6), my lowest x-value is -1200, lowest y-value is -6. Here it would be great to have the x-axis through y=0, so that differences from y=0 easily can be seen graphically.

How would I do that, is there a command you could use in the script written, to make it move the axes? I have a large script to evaluate a lot of graphs in, so a MATLAB-command would be preferable to a tool in the figure builder.

The (simple) code used is as following:

%% person5 – Puls
hold on
plot(person5_ethanol_ekgpuls_tid,person5_ethanol_ekgpuls,’g.-‘)
xlabel(‘Tid/Sek’)
ylabel(‘Blodtryk/MmHg’)
title(‘Forsøgsperson #5 Ethanol Ekg Puls’)

Hope that my question is understandable and that it can be done. axes in plots, plot, figures, moving axes, origin MATLAB Answers — New Questions

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I have two axes (top, bottom) in a GUI. I do not want the x-axis of the top ghraph to be present (because it is the same as the bottom x-axis). I could not find how to handle separately the x and y axis visibility.

CsabaI have two axes (top, bottom) in a GUI. I do not want the x-axis of the top ghraph to be present (because it is the same as the bottom x-axis). I could not find how to handle separately the x and y axis visibility.

Csaba I have two axes (top, bottom) in a GUI. I do not want the x-axis of the top ghraph to be present (because it is the same as the bottom x-axis). I could not find how to handle separately the x and y axis visibility.

Csaba axis, visibility MATLAB Answers — New Questions

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I am reading a big CSV file (500K lines) with readtable. In the CSV, some columns have the first 250+ lines empty (e.g. ",,,," in the CSV), while the non-missing values below (pretty rare) are either text strings or dates (in the DD-MM-YYYY format). Readtable() somehow interprets these columns as numeric, and so converts all the strings and dates into NaNs – thus, I end up with 100% NaN-filled columns instead of rarely-populated data (among empty strings and NaTs).
Furthermore, if I move the "with-data" lines up – even a few dozens positions up – readtable() starts to read everything normally!
So, it looks like readtable() checks only ~250 first values to determine the type of the column, which, in my opinion, is a bug! (Although I understand that it was likely made to improve speed.)

Is there a way to fix it systematically? I have lots of such CSVs with thousands of columns in them – so, a manual check and manual fix is not an option…

UPD: a test-file (truncated to 510 lines) is attached – the behaviour is still the same. The problem columns are the 2nd and the 3rd (p190, p191). The first non-empty value is on data-line 270.I am reading a big CSV file (500K lines) with readtable. In the CSV, some columns have the first 250+ lines empty (e.g. ",,,," in the CSV), while the non-missing values below (pretty rare) are either text strings or dates (in the DD-MM-YYYY format). Readtable() somehow interprets these columns as numeric, and so converts all the strings and dates into NaNs – thus, I end up with 100% NaN-filled columns instead of rarely-populated data (among empty strings and NaTs).
Furthermore, if I move the "with-data" lines up – even a few dozens positions up – readtable() starts to read everything normally!
So, it looks like readtable() checks only ~250 first values to determine the type of the column, which, in my opinion, is a bug! (Although I understand that it was likely made to improve speed.)

Is there a way to fix it systematically? I have lots of such CSVs with thousands of columns in them – so, a manual check and manual fix is not an option…

UPD: a test-file (truncated to 510 lines) is attached – the behaviour is still the same. The problem columns are the 2nd and the 3rd (p190, p191). The first non-empty value is on data-line 270. I am reading a big CSV file (500K lines) with readtable. In the CSV, some columns have the first 250+ lines empty (e.g. ",,,," in the CSV), while the non-missing values below (pretty rare) are either text strings or dates (in the DD-MM-YYYY format). Readtable() somehow interprets these columns as numeric, and so converts all the strings and dates into NaNs – thus, I end up with 100% NaN-filled columns instead of rarely-populated data (among empty strings and NaTs).
Furthermore, if I move the "with-data" lines up – even a few dozens positions up – readtable() starts to read everything normally!
So, it looks like readtable() checks only ~250 first values to determine the type of the column, which, in my opinion, is a bug! (Although I understand that it was likely made to improve speed.)

Is there a way to fix it systematically? I have lots of such CSVs with thousands of columns in them – so, a manual check and manual fix is not an option…

UPD: a test-file (truncated to 510 lines) is attached – the behaviour is still the same. The problem columns are the 2nd and the 3rd (p190, p191). The first non-empty value is on data-line 270. readtable, missing values, csv MATLAB Answers — New Questions

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Dear all,
I am recently trying to use the WLAN examples of the wireless HDL toolbox:
https://jp.mathworks.com/help/wireless-hdl/ug/wlanhdltransmitter.html
https://jp.mathworks.com/help/wireless-hdl/ug/wlanhdlreceiver.html
In these two examples of transmitter and receiver, it seems to support 802.11a/n/ac.
For instance, I would like to use 802.11n, then these should be selected:
HT: switched by "frameFormat"?
ODFM only: How to select?
MCS: which one should be select?
For 20 MHz channel bandwidth, which clock rare should be used in FPGA to drive the HDL codes?
ADC bit width: It seems to be 32 bit by default. How can I change to other bit width?
If I would like to use other than a/n/ac, how can I do?
For such kinds of the configurations or so, I would appreciate if anyone can instruct me how to change them before generating HDL.
Thank you in advance.Dear all,
I am recently trying to use the WLAN examples of the wireless HDL toolbox:
https://jp.mathworks.com/help/wireless-hdl/ug/wlanhdltransmitter.html
https://jp.mathworks.com/help/wireless-hdl/ug/wlanhdlreceiver.html
In these two examples of transmitter and receiver, it seems to support 802.11a/n/ac.
For instance, I would like to use 802.11n, then these should be selected:
HT: switched by "frameFormat"?
ODFM only: How to select?
MCS: which one should be select?
For 20 MHz channel bandwidth, which clock rare should be used in FPGA to drive the HDL codes?
ADC bit width: It seems to be 32 bit by default. How can I change to other bit width?
If I would like to use other than a/n/ac, how can I do?
For such kinds of the configurations or so, I would appreciate if anyone can instruct me how to change them before generating HDL.
Thank you in advance. Dear all,
I am recently trying to use the WLAN examples of the wireless HDL toolbox:
https://jp.mathworks.com/help/wireless-hdl/ug/wlanhdltransmitter.html
https://jp.mathworks.com/help/wireless-hdl/ug/wlanhdlreceiver.html
In these two examples of transmitter and receiver, it seems to support 802.11a/n/ac.
For instance, I would like to use 802.11n, then these should be selected:
HT: switched by "frameFormat"?
ODFM only: How to select?
MCS: which one should be select?
For 20 MHz channel bandwidth, which clock rare should be used in FPGA to drive the HDL codes?
ADC bit width: It seems to be 32 bit by default. How can I change to other bit width?
If I would like to use other than a/n/ac, how can I do?
For such kinds of the configurations or so, I would appreciate if anyone can instruct me how to change them before generating HDL.
Thank you in advance. wlan, wireless, hdl, simulink, matlab MATLAB Answers — New Questions

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I have discrete-time frequency response data in the form of a "frd" object. When I try to show the gain and phase margins associated with this data using the "bodeplot" function, these gain and phase margins do not appear on the plot. What am I missing?I have discrete-time frequency response data in the form of a "frd" object. When I try to show the gain and phase margins associated with this data using the "bodeplot" function, these gain and phase margins do not appear on the plot. What am I missing? I have discrete-time frequency response data in the form of a "frd" object. When I try to show the gain and phase margins associated with this data using the "bodeplot" function, these gain and phase margins do not appear on the plot. What am I missing? bodeplot, margin MATLAB Answers — New Questions

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I’m trying to run the following code, byt I have the error "Error in untitled (line 9) [t,x]=ode45(‘prob’,tspan,x0);" .
Why is that happening? Can anyone help me, please? Thank you!

%Numerical Solutions
%Problem #57
clc
clear
close all
%Numerical Solution
x0=[0;0];
tspan=[0 15];
[t,x]=ode45(‘prob’,tspan,x0);
figure(1)
plot(t,x(:,1));
title(‘Problem #57’);
xlabel(‘Time, sec.’);
ylabel(‘Displacement, m’);
hold on
%Analytical Solution
m=100;
c=20;
k=1000;
F=30;
w=sqrt(k/m);
d=c/(2*w*m);
wd=w*sqrt(1-d^2);
to=1;
phi=atan(d/sqrt(1-d^2));
%for t<to
t=linspace(0,1,3);
x=0.*t;
plot(t,x,’*’);
%for t>=to
t=linspace(1,15);
x=F/k-F/(k*sqrt(1-d^2)).*exp(-d.*w.*(t-to)).*cos(wd.*(t-to)-phi);
plot(t,x,’*’);
legend(‘Numerical’, ‘Analytical’)
%M-file for Prob #50
function dx=prob(t,x)
[rows, cols]=size(x);dx=zeros(rows, cols);
m=100;
c=20;
k=1000;
F=30;
if t<1
dx=0;
else
dx(1)=x(2);
dx(2)=-c/m*x(2) – k/m*x(1) + F/m;
end
endI’m trying to run the following code, byt I have the error "Error in untitled (line 9) [t,x]=ode45(‘prob’,tspan,x0);" .
Why is that happening? Can anyone help me, please? Thank you!

%Numerical Solutions
%Problem #57
clc
clear
close all
%Numerical Solution
x0=[0;0];
tspan=[0 15];
[t,x]=ode45(‘prob’,tspan,x0);
figure(1)
plot(t,x(:,1));
title(‘Problem #57’);
xlabel(‘Time, sec.’);
ylabel(‘Displacement, m’);
hold on
%Analytical Solution
m=100;
c=20;
k=1000;
F=30;
w=sqrt(k/m);
d=c/(2*w*m);
wd=w*sqrt(1-d^2);
to=1;
phi=atan(d/sqrt(1-d^2));
%for t<to
t=linspace(0,1,3);
x=0.*t;
plot(t,x,’*’);
%for t>=to
t=linspace(1,15);
x=F/k-F/(k*sqrt(1-d^2)).*exp(-d.*w.*(t-to)).*cos(wd.*(t-to)-phi);
plot(t,x,’*’);
legend(‘Numerical’, ‘Analytical’)
%M-file for Prob #50
function dx=prob(t,x)
[rows, cols]=size(x);dx=zeros(rows, cols);
m=100;
c=20;
k=1000;
F=30;
if t<1
dx=0;
else
dx(1)=x(2);
dx(2)=-c/m*x(2) – k/m*x(1) + F/m;
end
end I’m trying to run the following code, byt I have the error "Error in untitled (line 9) [t,x]=ode45(‘prob’,tspan,x0);" .
Why is that happening? Can anyone help me, please? Thank you!

%Numerical Solutions
%Problem #57
clc
clear
close all
%Numerical Solution
x0=[0;0];
tspan=[0 15];
[t,x]=ode45(‘prob’,tspan,x0);
figure(1)
plot(t,x(:,1));
title(‘Problem #57’);
xlabel(‘Time, sec.’);
ylabel(‘Displacement, m’);
hold on
%Analytical Solution
m=100;
c=20;
k=1000;
F=30;
w=sqrt(k/m);
d=c/(2*w*m);
wd=w*sqrt(1-d^2);
to=1;
phi=atan(d/sqrt(1-d^2));
%for t<to
t=linspace(0,1,3);
x=0.*t;
plot(t,x,’*’);
%for t>=to
t=linspace(1,15);
x=F/k-F/(k*sqrt(1-d^2)).*exp(-d.*w.*(t-to)).*cos(wd.*(t-to)-phi);
plot(t,x,’*’);
legend(‘Numerical’, ‘Analytical’)
%M-file for Prob #50
function dx=prob(t,x)
[rows, cols]=size(x);dx=zeros(rows, cols);
m=100;
c=20;
k=1000;
F=30;
if t<1
dx=0;
else
dx(1)=x(2);
dx(2)=-c/m*x(2) – k/m*x(1) + F/m;
end
end error untitled MATLAB Answers — New Questions

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Hello,
I need your help.
In the image bellow (hopefully it did work this time) there is a three-dimensional tooth on the left (with its three-dimensional coordinates, of course) and on the left the same tooth but in a two-dimensional parameterised disc. The order of the points on the 2D and 3D vectors are the same, that is, the points are corresponding.
I woud like to select a point on the 3D tooth and get the same point marked on the right 2D tooth. I can do this the other way around, that is, selecting a point on the disc and then getting the correspondent on the 3D figure.
My method for doing this on the 2D was with the function getpts, which gives me the coordinates of the mouse where I click. I then take the nearest neighbour of that point (or points) and plot the corresponding points on the 3D figure with its correct indexes.
So my question is, is there a similar function to getpts() for a 3D figure?
Thank you :)Hello,
I need your help.
In the image bellow (hopefully it did work this time) there is a three-dimensional tooth on the left (with its three-dimensional coordinates, of course) and on the left the same tooth but in a two-dimensional parameterised disc. The order of the points on the 2D and 3D vectors are the same, that is, the points are corresponding.
I woud like to select a point on the 3D tooth and get the same point marked on the right 2D tooth. I can do this the other way around, that is, selecting a point on the disc and then getting the correspondent on the 3D figure.
My method for doing this on the 2D was with the function getpts, which gives me the coordinates of the mouse where I click. I then take the nearest neighbour of that point (or points) and plot the corresponding points on the 3D figure with its correct indexes.
So my question is, is there a similar function to getpts() for a 3D figure?
Thank you 🙂 Hello,
I need your help.
In the image bellow (hopefully it did work this time) there is a three-dimensional tooth on the left (with its three-dimensional coordinates, of course) and on the left the same tooth but in a two-dimensional parameterised disc. The order of the points on the 2D and 3D vectors are the same, that is, the points are corresponding.
I woud like to select a point on the 3D tooth and get the same point marked on the right 2D tooth. I can do this the other way around, that is, selecting a point on the disc and then getting the correspondent on the 3D figure.
My method for doing this on the 2D was with the function getpts, which gives me the coordinates of the mouse where I click. I then take the nearest neighbour of that point (or points) and plot the corresponding points on the 3D figure with its correct indexes.
So my question is, is there a similar function to getpts() for a 3D figure?
Thank you 🙂 3d getpts MATLAB Answers — New Questions

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My dataset consists of two parameters: time (in micro second) and amplitude (Attached):
I am particularly interested in analyzing the fluctuation of the dominant frequency across the entire dataset. Additionally, I want to examine how the frequency content changes as a function of time. For instance, in time intervals such as 0–200 ms, 100–300 ms, 300–500 ms, and so on.

I attempted multiple approaches, but the results are not very consistent. I would be interested in getting a second opinion.

Thanks in Advance!My dataset consists of two parameters: time (in micro second) and amplitude (Attached):
I am particularly interested in analyzing the fluctuation of the dominant frequency across the entire dataset. Additionally, I want to examine how the frequency content changes as a function of time. For instance, in time intervals such as 0–200 ms, 100–300 ms, 300–500 ms, and so on.

I attempted multiple approaches, but the results are not very consistent. I would be interested in getting a second opinion.

Thanks in Advance! My dataset consists of two parameters: time (in micro second) and amplitude (Attached):
I am particularly interested in analyzing the fluctuation of the dominant frequency across the entire dataset. Additionally, I want to examine how the frequency content changes as a function of time. For instance, in time intervals such as 0–200 ms, 100–300 ms, 300–500 ms, and so on.

I attempted multiple approaches, but the results are not very consistent. I would be interested in getting a second opinion.

Thanks in Advance! time series, fft MATLAB Answers — New Questions

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