Category: News
S curve ramp function
I need help creating a function for an s curve ramp. The code below will create the inserted picture below. However, this code only works for a constant ramp block (connected to x). This code from the piecewise function on the Matlab smf() help file page.
I need two additional inputs (acceleration rate and jerk rate). The output should ramp the input velocity (x) signal based on the acceleration rate (a), and jerk rate (j). I need the block or code to be dynamic. I do not want to put a time value inside of my code. I will be exporting the code to structure text and input the code into a Siemens PLC.
I don’t want to include a fixed dt in my code because I will be running the code in a PLC. Maybe it would be better to design this function in simulink and set a fixed time solver and use integrator blocks?
x = 0:0.01:10; % domain
a = 1; % unsaturated interval’s left endpoint
b = 8; % unsaturated interval’s right endpoint
y = smf(x, a, b);
plot(x, y), grid on
xline(a, ‘–‘)
xline(b, ‘–‘)
title("S-curve piecewise function")
xlabel("x")
ylabel("Amplitude")
ylim([-0.05 1.05])
%% S-curve piecewise function
function y = smf(x, a, b)
m = (a + b)/2;
y = (x > a & x <= m) .* ( 2*((x-a)/(b-a)).^2) + …
(x > m & x <= b) .* (1-2*((x-b)/(b-a)).^2) + …
(x > b);
endI need help creating a function for an s curve ramp. The code below will create the inserted picture below. However, this code only works for a constant ramp block (connected to x). This code from the piecewise function on the Matlab smf() help file page.
I need two additional inputs (acceleration rate and jerk rate). The output should ramp the input velocity (x) signal based on the acceleration rate (a), and jerk rate (j). I need the block or code to be dynamic. I do not want to put a time value inside of my code. I will be exporting the code to structure text and input the code into a Siemens PLC.
I don’t want to include a fixed dt in my code because I will be running the code in a PLC. Maybe it would be better to design this function in simulink and set a fixed time solver and use integrator blocks?
x = 0:0.01:10; % domain
a = 1; % unsaturated interval’s left endpoint
b = 8; % unsaturated interval’s right endpoint
y = smf(x, a, b);
plot(x, y), grid on
xline(a, ‘–‘)
xline(b, ‘–‘)
title("S-curve piecewise function")
xlabel("x")
ylabel("Amplitude")
ylim([-0.05 1.05])
%% S-curve piecewise function
function y = smf(x, a, b)
m = (a + b)/2;
y = (x > a & x <= m) .* ( 2*((x-a)/(b-a)).^2) + …
(x > m & x <= b) .* (1-2*((x-b)/(b-a)).^2) + …
(x > b);
end I need help creating a function for an s curve ramp. The code below will create the inserted picture below. However, this code only works for a constant ramp block (connected to x). This code from the piecewise function on the Matlab smf() help file page.
I need two additional inputs (acceleration rate and jerk rate). The output should ramp the input velocity (x) signal based on the acceleration rate (a), and jerk rate (j). I need the block or code to be dynamic. I do not want to put a time value inside of my code. I will be exporting the code to structure text and input the code into a Siemens PLC.
I don’t want to include a fixed dt in my code because I will be running the code in a PLC. Maybe it would be better to design this function in simulink and set a fixed time solver and use integrator blocks?
x = 0:0.01:10; % domain
a = 1; % unsaturated interval’s left endpoint
b = 8; % unsaturated interval’s right endpoint
y = smf(x, a, b);
plot(x, y), grid on
xline(a, ‘–‘)
xline(b, ‘–‘)
title("S-curve piecewise function")
xlabel("x")
ylabel("Amplitude")
ylim([-0.05 1.05])
%% S-curve piecewise function
function y = smf(x, a, b)
m = (a + b)/2;
y = (x > a & x <= m) .* ( 2*((x-a)/(b-a)).^2) + …
(x > m & x <= b) .* (1-2*((x-b)/(b-a)).^2) + …
(x > b);
end s curve MATLAB Answers — New Questions
How to create excel sheet for developed model using MATLAB
I have subsystem which is having few input/output. I want to do testing using excel sheet.
How to create excel using script which generate input and output inside excel.
or any other way to test the model.
Please let me know the solutionI have subsystem which is having few input/output. I want to do testing using excel sheet.
How to create excel using script which generate input and output inside excel.
or any other way to test the model.
Please let me know the solution I have subsystem which is having few input/output. I want to do testing using excel sheet.
How to create excel using script which generate input and output inside excel.
or any other way to test the model.
Please let me know the solution importing excel data, testing, mil, matlab MATLAB Answers — New Questions
How to express constants of integral
Hi everyone,
I am a matlab beginner. How can I find the constants of integral C1 and C2 ?
For example i know that, how can i find constants of integral C1 and C2 in this script? Thanks 🙂
syms x
y1 = exp(-2*x+sqrt(6)*x);
y2 = exp(-2*x-sqrt(6)*x);
g = 2*x^2-3*x+6;
A = [y1 y2;diff(y1,x) diff(y2,x)]
b = [0; g]
Ab
u = simplify(Ab)
u = int(u,x)
simplify(u)Hi everyone,
I am a matlab beginner. How can I find the constants of integral C1 and C2 ?
For example i know that, how can i find constants of integral C1 and C2 in this script? Thanks 🙂
syms x
y1 = exp(-2*x+sqrt(6)*x);
y2 = exp(-2*x-sqrt(6)*x);
g = 2*x^2-3*x+6;
A = [y1 y2;diff(y1,x) diff(y2,x)]
b = [0; g]
Ab
u = simplify(Ab)
u = int(u,x)
simplify(u) Hi everyone,
I am a matlab beginner. How can I find the constants of integral C1 and C2 ?
For example i know that, how can i find constants of integral C1 and C2 in this script? Thanks 🙂
syms x
y1 = exp(-2*x+sqrt(6)*x);
y2 = exp(-2*x-sqrt(6)*x);
g = 2*x^2-3*x+6;
A = [y1 y2;diff(y1,x) diff(y2,x)]
b = [0; g]
Ab
u = simplify(Ab)
u = int(u,x)
simplify(u) integral, constants of integral MATLAB Answers — New Questions
2019b download installer
I need to download 2019 version of Matlab for my macbook pro 10.13.6. How can I download it. ThanksI need to download 2019 version of Matlab for my macbook pro 10.13.6. How can I download it. Thanks I need to download 2019 version of Matlab for my macbook pro 10.13.6. How can I download it. Thanks matlab MATLAB Answers — New Questions
I want to build a double pendulum system in Simulink but am getting errors relating to the tolerance and step size
How do I solve this coupled second order differential equation.
Errors:
Right now it uses ode45 to solve it but I have tried every model, added the memory block, changed the initial conditions to be smaller, changed the max step size and relative errors but nothing works.How do I solve this coupled second order differential equation.
Errors:
Right now it uses ode45 to solve it but I have tried every model, added the memory block, changed the initial conditions to be smaller, changed the max step size and relative errors but nothing works. How do I solve this coupled second order differential equation.
Errors:
Right now it uses ode45 to solve it but I have tried every model, added the memory block, changed the initial conditions to be smaller, changed the max step size and relative errors but nothing works. stepsize, ode45, ode, differential equations, simulink, matlab MATLAB Answers — New Questions
How to model a simple brake in Simscape (mechanical rotational domain)?
Hello, I am currently trying to model a simple brake in Simscape in the mechanical rotational domain.
The input to the block should be pressure.
The braking torque should increase linearly between the following points:0 bar = 0 Nm1 bar = 10 Nm
Is such a block available in the foundation library?
Would it be possible to implement such a component as a custom Simscape component?Hello, I am currently trying to model a simple brake in Simscape in the mechanical rotational domain.
The input to the block should be pressure.
The braking torque should increase linearly between the following points:0 bar = 0 Nm1 bar = 10 Nm
Is such a block available in the foundation library?
Would it be possible to implement such a component as a custom Simscape component? Hello, I am currently trying to model a simple brake in Simscape in the mechanical rotational domain.
The input to the block should be pressure.
The braking torque should increase linearly between the following points:0 bar = 0 Nm1 bar = 10 Nm
Is such a block available in the foundation library?
Would it be possible to implement such a component as a custom Simscape component? MATLAB Answers — New Questions
Time to Review How to Preserve Ex-Employee Data
Microsoft Layoffs Remind Microsoft 365 Tenants About the Need to Preserve Ex-Employee Data
This week’s news that Microsoft is trimming 3% of its global workforce brought shock to those affected by the elimination of their position. My LinkedIn feed has been flooded by updates from people who discovered that they’re in a position that they never anticipated, some of whom have been with Microsoft for many years. I’ve been involved in many downsizing actions at Digital Equipment Corporation, Compaq, and HP, and it’s never easy for managers and employees alike. I wish all those affected the best of luck in finding new positions.
The hope of Microsoft management is probably that the layoffs will result in a leaner, more agile organization, the only goodness for the Microsoft 365 community that comes from the episode is that it’s a great reminder for tenant administrators to review the process used to secure ex-employee information following a termination.
Changes in Microsoft 365 Make It More Complex to Preserve Ex-Employee Data
Ten years ago, the task was relatively simple because fewer types of information needed to be secured. Today, new applications and more integration between applications means that the task is more complex.
The basics remain:
- Terminating access to resources by revoking access tokens, disabling accounts, and changing account passwords.
- Physically securing devices (workstations and mobile devices) or remote wipes to remove corporate content.
- Preserving application information such as mailboxes and OneDrive for Business accounts.
Deleting a user account via the Microsoft 365 admin center (Figure 1) takes care of the basics. To do a more comprehensive job, it’s best to script all the steps with PowerShell.
I recommend using inactive mailboxes to retain mailbox content rather than making a regular user mailbox into a shared mailbox, but advantages exist for both approaches. Happily, not much has recently changed with mailbox retention. The situation is completely different with OneDrive for Business in terms of the app reliance on OneDrive and how Microsoft deals with unlicensed OneDrive accounts.
The Key Role Played by OneDrive for Business
OneDrive for Business has become the de facto storage destination for many Microsoft apps, storing files as diverse as Loop components, Teams meeting recordings, and whiteboards. Microsoft’s enthusiasm knows no boundaries when it comes to storing files in OneDrive for Business. Even PowerShell module installations end up in OneDrive for Business if you’re not careful.
Message center notification MC1053121 (last updated 23 April 2025) describes how users who don’t use the Known Folder Move (KFM) feature to redirect common folders like Documents from local disks to OneDrive will be more aggressively “encouraged” to back up files in OneDrive for Business. This change is rolling out to general availability and should be active worldwide by mid-June 2025. If you don’t like users seeing this kind of prompting, consider the new Restrict KFM from Office policy for the Office apps (see MC1053121 for details).
Because OneDrive for Business accounts owned by ex-employees are so important from a retention perspective, it’s important to ensure an alternative site administrator (usually the ex-employee’s manager) is assigned to these accounts so that any useful information in the account is retained. Moving shared objects like Loop components or files shared in Teams chats from the account will break sharing. Eventually, the organization can remove the OneDrive account. If the account remains online, Microsoft will archive the now-unlicensed OneDrive account. Deleting or archiving the account will also break sharing!
The challenges of dealing with OneDrive accounts owned by ex-employees is one of the reasons why it is important to coach users to store corporate information in SharePoint Online instead of keeping files in OneDrive for Business. Unfortunately, that advice is often observed more in theory than practice.
The New Challenge Posed by Flows and Agents
Power Platform flows are often tied to a user account. If the account goes away or is disabled, the flow will stop working. That shouldn’t be a problem if the process performed by the flow is personal to the now-departed employee. On the other hand, if the flow does something that others depend on, that process is now broken and needs to be fixed.
The same applies to agents. It all depends on what an agent does and who uses it. Personal agents will stop running when an account is no longer available to authenticate and that shouldn’t be a problem. But we’re at the early stages of understanding the development, deployment, and management of agents within Microsoft 365 tenants, and care must be taken to ensure that any agents created and maintained by ex-employees remain functional when needed or are disabled and removed if not. This doesn’t happen automatically when an administrator disables or deletes a user account.
Other Issues Requiring Attention
Apart from personal data, there are other issues that might need attention to preserve ex-employee data, including the ownership of:
- Microsoft 365 groups, security groups, and distribution lists.
- Loop workspaces and the associated SharePoint Embedded container.
- Entra ID apps.
- Recurring meetings.
- Phone numbers for use with the Teams Phone system.
The point is that the Microsoft 365 ecosystem continues to evolve. This means that processes and procedures used to manage access to Microsoft 365 resources must evolve in step. This week’s Microsoft layoffs are a regrettable reminder of that fact.
Keep up with the changing world of the Microsoft 365 ecosystem by subscribing to the Office 365 for IT Pros eBook. Monthly updates mean that our subscribers learn about new developments as they happen.
How to debug C# .NET assembly called from MATLAB?
I’m trying to use some .NET assemblies from MATLAB but I am encountering a MATLAB System Error.
I was wondering if there is some additional debug logs I can turn on to see the details of the system error to determine what in my .NET assembly might be causing the crash.I’m trying to use some .NET assemblies from MATLAB but I am encountering a MATLAB System Error.
I was wondering if there is some additional debug logs I can turn on to see the details of the system error to determine what in my .NET assembly might be causing the crash. I’m trying to use some .NET assemblies from MATLAB but I am encountering a MATLAB System Error.
I was wondering if there is some additional debug logs I can turn on to see the details of the system error to determine what in my .NET assembly might be causing the crash. MATLAB Answers — New Questions
How do I set the size of a tile from tiledlayout?
I am producing a number of figures with a different number of tiles from tiledlayout. I’d like to make sure all tiles are the same size across the figures. I have only found options to set the figure size. This is problematic since I have to change the figure size every time the number of tiles changes.I am producing a number of figures with a different number of tiles from tiledlayout. I’d like to make sure all tiles are the same size across the figures. I have only found options to set the figure size. This is problematic since I have to change the figure size every time the number of tiles changes. I am producing a number of figures with a different number of tiles from tiledlayout. I’d like to make sure all tiles are the same size across the figures. I have only found options to set the figure size. This is problematic since I have to change the figure size every time the number of tiles changes. tiledlayout, plotting MATLAB Answers — New Questions
Communicate with worker through client
Hello!
I have an app (app designer/GUIDE) which calls a function that looks something like this
function func()
spmd
switch labindex
case 1
while (true)
% some code…
end
case 2
while (true)
% some code…
end
end
end
end
and I would like to be able to break out of the while loop for each workers of the spmd with a click of a button in the app, which means I have to send data from the client to the workers.
I know I can easily send data from the workers to the client, but I’m not sure about the reverse direction.
Please help, thanks!Hello!
I have an app (app designer/GUIDE) which calls a function that looks something like this
function func()
spmd
switch labindex
case 1
while (true)
% some code…
end
case 2
while (true)
% some code…
end
end
end
end
and I would like to be able to break out of the while loop for each workers of the spmd with a click of a button in the app, which means I have to send data from the client to the workers.
I know I can easily send data from the workers to the client, but I’m not sure about the reverse direction.
Please help, thanks! Hello!
I have an app (app designer/GUIDE) which calls a function that looks something like this
function func()
spmd
switch labindex
case 1
while (true)
% some code…
end
case 2
while (true)
% some code…
end
end
end
end
and I would like to be able to break out of the while loop for each workers of the spmd with a click of a button in the app, which means I have to send data from the client to the workers.
I know I can easily send data from the workers to the client, but I’m not sure about the reverse direction.
Please help, thanks! spmd, worker, parallel computing, app designer, guide, dataqueue MATLAB Answers — New Questions
Find Gaps and Overlaps in Rectangular Prisms
I have rectangular prisms at fixed locations defined below, and I’m trying to see if they fit in a box without any gaps or overlaps. The perfect no-gaps, no-overlaps solution looks like the picture of the attached Jenga tower.
% Fit the following rectangular prisms in a box:
prisms.p1.x = [75 200]; % Min/max of x range for prism p1
prisms.p1.y = [4 100]; % Min/max of y range for prism p1
prisms.p1.z = [1e3 1e4]; % Min/max of z range for prism p1
prisms.p2.x = [20 80];
prisms.p2.y = [0.1 2.2];
prisms.p2.z = [0 1e3];
prisms.p3.x = [80 115];
prisms.p3.y = [0.1 4];
prisms.p3.z = [0 1e3];
prisms.p4.x = [20 180];
prisms.p4.y = [2.2 8];
prisms.p4.z = [0 1e3];
prisms.p5.x = [200 1000];
prisms.p5.y = [0 1];
prisms.p5.z = [0 1e4];
% The box that the prisms must fit in, given the values above, is:
box.x = [20 1000]; % Min/max of x range for the box of prisms
box.y = [0 100]; % Min/max of x range for the box of prisms
box.z = [0 1e4]; % Min/max of x range for the box of prisms
Above is a struct called prisms. It has 5 fields; each field describes one prism (p1,p2,p3,p4,p5) using x,y,z coordinates. I want to identify if the rectangular prisms have any overlaps or gaps between them, and if so, report where those gaps and/or overlaps occur. The ranges are all aligned with the axes, and are always >=0.
The size of the box that the prisms must fit in is defined to be the min and max values over all prisms for a particular axis. If two prisms touch at only one point in their range, I don’t count that as an "overlap". I don’t want to move the prisms, but instead want to report where two prisms overlap, or where there are gaps in the box.
I’ve found all the overlapping regions by testing pairs of rectangular prisms for overlap, and it seems to work:
%% Get all combinations of classes (combinations since order does not matter)
nFields = length(fieldnames(prisms));
combos = nchoosek(1:nFields,2);
nCombos = nchoosek(nFields,2);
% Index the struct by index instead of field name
fns = fieldnames(prisms);
%% Check for overlap between each pair of classes
for ic = 1:nCombos
x11 = prisms.(fns{combos(ic,1)}).x(1);
x12 = prisms.(fns{combos(ic,1)}).x(2);
y11 = prisms.(fns{combos(ic,1)}).y(1);
y12 = prisms.(fns{combos(ic,1)}).y(2);
z11 = prisms.(fns{combos(ic,1)}).z(1);
z12 = prisms.(fns{combos(ic,1)}).z(2);
x21 = prisms.(fns{combos(ic,2)}).x(1);
x22 = prisms.(fns{combos(ic,2)}).x(2);
y21 = prisms.(fns{combos(ic,2)}).y(1);
y22 = prisms.(fns{combos(ic,2)}).y(2);
z21 = prisms.(fns{combos(ic,2)}).z(1);
z22 = prisms.(fns{combos(ic,2)}).z(2);
if( (x12>x21 && y12>y21 && z12>z21) || (x21>x12 && y21>y12 && z21>z12) )
% There is either overlap, or the edge of classes align
% Check for overlap in x
if( ((x12>=x21) && (x11<=x22)) || ((x11<=x22) && (x21<=x21)) )
if((x21==x12) || (x11==x22))
continue;
else
fprintf(‘Overlap in x between %s and %sn’, fns{combos(ic,1)}, fns{combos(ic,2)});
fprintf(‘ Limits for %s x: [%g %g]n’, fns{combos(ic,1)}, x11, x12);
fprintf(‘ Limits for %s x: [%g %g]n’, fns{combos(ic,2)}, x21, x22);
end
end
% Check for overlap in y
if( ((y12>=y21) && (y11<=y22)) || ((y11<=y22) && (y21<=y21)) )
if((y21==y12) || (y11==y22))
continue;
else
fprintf(‘Overlap in y between %s and %sn’, fns{combos(ic,1)}, fns{combos(ic,2)});
fprintf(‘ Limits for %s y: [%g %g]n’, fns{combos(ic,1)}, y11, y12);
fprintf(‘ Limits for %s y: [%g %g]n’, fns{combos(ic,2)}, y21, y22);
end
end
% Check for overlap in z
if( ((z12>=z21) && (z11<=z22)) || ((z11<=z22) && (z21<=z21)) )
if((z21==z12) || (z11==z22))
continue;
else
fprintf(‘Overlap in z between %s and %sn’, fns{combos(ic,1)}, fns{combos(ic,2)});
fprintf(‘ Limits for %s z: [%g %g]n’, fns{combos(ic,1)}, z11, z12);
fprintf(‘ Limits for %s z: [%g %g]n’, fns{combos(ic,2)}, z21, z22);
end
end
end
end
I just can’t get the last part which will identify where the gaps happen. I think I can modify the above code to push this function across the finish line, but I need some help.I have rectangular prisms at fixed locations defined below, and I’m trying to see if they fit in a box without any gaps or overlaps. The perfect no-gaps, no-overlaps solution looks like the picture of the attached Jenga tower.
% Fit the following rectangular prisms in a box:
prisms.p1.x = [75 200]; % Min/max of x range for prism p1
prisms.p1.y = [4 100]; % Min/max of y range for prism p1
prisms.p1.z = [1e3 1e4]; % Min/max of z range for prism p1
prisms.p2.x = [20 80];
prisms.p2.y = [0.1 2.2];
prisms.p2.z = [0 1e3];
prisms.p3.x = [80 115];
prisms.p3.y = [0.1 4];
prisms.p3.z = [0 1e3];
prisms.p4.x = [20 180];
prisms.p4.y = [2.2 8];
prisms.p4.z = [0 1e3];
prisms.p5.x = [200 1000];
prisms.p5.y = [0 1];
prisms.p5.z = [0 1e4];
% The box that the prisms must fit in, given the values above, is:
box.x = [20 1000]; % Min/max of x range for the box of prisms
box.y = [0 100]; % Min/max of x range for the box of prisms
box.z = [0 1e4]; % Min/max of x range for the box of prisms
Above is a struct called prisms. It has 5 fields; each field describes one prism (p1,p2,p3,p4,p5) using x,y,z coordinates. I want to identify if the rectangular prisms have any overlaps or gaps between them, and if so, report where those gaps and/or overlaps occur. The ranges are all aligned with the axes, and are always >=0.
The size of the box that the prisms must fit in is defined to be the min and max values over all prisms for a particular axis. If two prisms touch at only one point in their range, I don’t count that as an "overlap". I don’t want to move the prisms, but instead want to report where two prisms overlap, or where there are gaps in the box.
I’ve found all the overlapping regions by testing pairs of rectangular prisms for overlap, and it seems to work:
%% Get all combinations of classes (combinations since order does not matter)
nFields = length(fieldnames(prisms));
combos = nchoosek(1:nFields,2);
nCombos = nchoosek(nFields,2);
% Index the struct by index instead of field name
fns = fieldnames(prisms);
%% Check for overlap between each pair of classes
for ic = 1:nCombos
x11 = prisms.(fns{combos(ic,1)}).x(1);
x12 = prisms.(fns{combos(ic,1)}).x(2);
y11 = prisms.(fns{combos(ic,1)}).y(1);
y12 = prisms.(fns{combos(ic,1)}).y(2);
z11 = prisms.(fns{combos(ic,1)}).z(1);
z12 = prisms.(fns{combos(ic,1)}).z(2);
x21 = prisms.(fns{combos(ic,2)}).x(1);
x22 = prisms.(fns{combos(ic,2)}).x(2);
y21 = prisms.(fns{combos(ic,2)}).y(1);
y22 = prisms.(fns{combos(ic,2)}).y(2);
z21 = prisms.(fns{combos(ic,2)}).z(1);
z22 = prisms.(fns{combos(ic,2)}).z(2);
if( (x12>x21 && y12>y21 && z12>z21) || (x21>x12 && y21>y12 && z21>z12) )
% There is either overlap, or the edge of classes align
% Check for overlap in x
if( ((x12>=x21) && (x11<=x22)) || ((x11<=x22) && (x21<=x21)) )
if((x21==x12) || (x11==x22))
continue;
else
fprintf(‘Overlap in x between %s and %sn’, fns{combos(ic,1)}, fns{combos(ic,2)});
fprintf(‘ Limits for %s x: [%g %g]n’, fns{combos(ic,1)}, x11, x12);
fprintf(‘ Limits for %s x: [%g %g]n’, fns{combos(ic,2)}, x21, x22);
end
end
% Check for overlap in y
if( ((y12>=y21) && (y11<=y22)) || ((y11<=y22) && (y21<=y21)) )
if((y21==y12) || (y11==y22))
continue;
else
fprintf(‘Overlap in y between %s and %sn’, fns{combos(ic,1)}, fns{combos(ic,2)});
fprintf(‘ Limits for %s y: [%g %g]n’, fns{combos(ic,1)}, y11, y12);
fprintf(‘ Limits for %s y: [%g %g]n’, fns{combos(ic,2)}, y21, y22);
end
end
% Check for overlap in z
if( ((z12>=z21) && (z11<=z22)) || ((z11<=z22) && (z21<=z21)) )
if((z21==z12) || (z11==z22))
continue;
else
fprintf(‘Overlap in z between %s and %sn’, fns{combos(ic,1)}, fns{combos(ic,2)});
fprintf(‘ Limits for %s z: [%g %g]n’, fns{combos(ic,1)}, z11, z12);
fprintf(‘ Limits for %s z: [%g %g]n’, fns{combos(ic,2)}, z21, z22);
end
end
end
end
I just can’t get the last part which will identify where the gaps happen. I think I can modify the above code to push this function across the finish line, but I need some help. I have rectangular prisms at fixed locations defined below, and I’m trying to see if they fit in a box without any gaps or overlaps. The perfect no-gaps, no-overlaps solution looks like the picture of the attached Jenga tower.
% Fit the following rectangular prisms in a box:
prisms.p1.x = [75 200]; % Min/max of x range for prism p1
prisms.p1.y = [4 100]; % Min/max of y range for prism p1
prisms.p1.z = [1e3 1e4]; % Min/max of z range for prism p1
prisms.p2.x = [20 80];
prisms.p2.y = [0.1 2.2];
prisms.p2.z = [0 1e3];
prisms.p3.x = [80 115];
prisms.p3.y = [0.1 4];
prisms.p3.z = [0 1e3];
prisms.p4.x = [20 180];
prisms.p4.y = [2.2 8];
prisms.p4.z = [0 1e3];
prisms.p5.x = [200 1000];
prisms.p5.y = [0 1];
prisms.p5.z = [0 1e4];
% The box that the prisms must fit in, given the values above, is:
box.x = [20 1000]; % Min/max of x range for the box of prisms
box.y = [0 100]; % Min/max of x range for the box of prisms
box.z = [0 1e4]; % Min/max of x range for the box of prisms
Above is a struct called prisms. It has 5 fields; each field describes one prism (p1,p2,p3,p4,p5) using x,y,z coordinates. I want to identify if the rectangular prisms have any overlaps or gaps between them, and if so, report where those gaps and/or overlaps occur. The ranges are all aligned with the axes, and are always >=0.
The size of the box that the prisms must fit in is defined to be the min and max values over all prisms for a particular axis. If two prisms touch at only one point in their range, I don’t count that as an "overlap". I don’t want to move the prisms, but instead want to report where two prisms overlap, or where there are gaps in the box.
I’ve found all the overlapping regions by testing pairs of rectangular prisms for overlap, and it seems to work:
%% Get all combinations of classes (combinations since order does not matter)
nFields = length(fieldnames(prisms));
combos = nchoosek(1:nFields,2);
nCombos = nchoosek(nFields,2);
% Index the struct by index instead of field name
fns = fieldnames(prisms);
%% Check for overlap between each pair of classes
for ic = 1:nCombos
x11 = prisms.(fns{combos(ic,1)}).x(1);
x12 = prisms.(fns{combos(ic,1)}).x(2);
y11 = prisms.(fns{combos(ic,1)}).y(1);
y12 = prisms.(fns{combos(ic,1)}).y(2);
z11 = prisms.(fns{combos(ic,1)}).z(1);
z12 = prisms.(fns{combos(ic,1)}).z(2);
x21 = prisms.(fns{combos(ic,2)}).x(1);
x22 = prisms.(fns{combos(ic,2)}).x(2);
y21 = prisms.(fns{combos(ic,2)}).y(1);
y22 = prisms.(fns{combos(ic,2)}).y(2);
z21 = prisms.(fns{combos(ic,2)}).z(1);
z22 = prisms.(fns{combos(ic,2)}).z(2);
if( (x12>x21 && y12>y21 && z12>z21) || (x21>x12 && y21>y12 && z21>z12) )
% There is either overlap, or the edge of classes align
% Check for overlap in x
if( ((x12>=x21) && (x11<=x22)) || ((x11<=x22) && (x21<=x21)) )
if((x21==x12) || (x11==x22))
continue;
else
fprintf(‘Overlap in x between %s and %sn’, fns{combos(ic,1)}, fns{combos(ic,2)});
fprintf(‘ Limits for %s x: [%g %g]n’, fns{combos(ic,1)}, x11, x12);
fprintf(‘ Limits for %s x: [%g %g]n’, fns{combos(ic,2)}, x21, x22);
end
end
% Check for overlap in y
if( ((y12>=y21) && (y11<=y22)) || ((y11<=y22) && (y21<=y21)) )
if((y21==y12) || (y11==y22))
continue;
else
fprintf(‘Overlap in y between %s and %sn’, fns{combos(ic,1)}, fns{combos(ic,2)});
fprintf(‘ Limits for %s y: [%g %g]n’, fns{combos(ic,1)}, y11, y12);
fprintf(‘ Limits for %s y: [%g %g]n’, fns{combos(ic,2)}, y21, y22);
end
end
% Check for overlap in z
if( ((z12>=z21) && (z11<=z22)) || ((z11<=z22) && (z21<=z21)) )
if((z21==z12) || (z11==z22))
continue;
else
fprintf(‘Overlap in z between %s and %sn’, fns{combos(ic,1)}, fns{combos(ic,2)});
fprintf(‘ Limits for %s z: [%g %g]n’, fns{combos(ic,1)}, z11, z12);
fprintf(‘ Limits for %s z: [%g %g]n’, fns{combos(ic,2)}, z21, z22);
end
end
end
end
I just can’t get the last part which will identify where the gaps happen. I think I can modify the above code to push this function across the finish line, but I need some help. matlab, function, 3d, mathematics MATLAB Answers — New Questions
Position finding by triangulation
How can I triangulate a position using two DMEs in matlab?How can I triangulate a position using two DMEs in matlab? How can I triangulate a position using two DMEs in matlab? navigation MATLAB Answers — New Questions
Microsoft Graph PowerShell SDK V2.28 Attempts to Restore Stability
One Step Forward, Six Steps Back for Flawed Releases
Literally millions of people download and use the Microsoft Graph PowerShell SDK. With the retirement of the older Azure AD and MSOL modules, an obvious spike in the number of downloads occurred, all of which meant that the SDK is now a critical automation component for many Microsoft 365 tenants.
On May 10, 2025, Microsoft released V2.28 of the Microsoft Graph PowerShell SDK to the PowerShell Gallery (Figure 1). This release follows a catalog of woe since the release of V2.26 of the Graph PowerShell SDK on February 25, 2025. In an attempt to stem a cascade of bugs, Microsoft followed up by releasing V2.26.1, and V2.27 in April. It was all to no avail. In a case of one step forward, six steps back, V2.27 addressed a problem with Azure Automation but introduced the disappearing payload issue.
Disappearing Payloads
Graph API requests to create or update objects like users, groups, and policies usually include a JSON-formatted payload containing parameter values or instructions. Graph SDK cmdlets also use payloads, usually formatted as hash tables, that are passed to the underlying Graph API requests when the cmdlets run. You can see the Graph API request and payload used by an SDK cmdlet by including the Debug parameter.
Soon after the release of V2.27, developers complained that cmdlets did not pass the provided payload. An example of the problem is the inability to pass parameters when assigning licenses to user accounts with the Set-MgUserLicense cmdlet. Because license management is such an important task, this problem easily fell into the “must fix quick” category. Another example is when the payload disappears when updating an application with the Update-MgApplication cmdlet, or when creating a new calendar event with New-MgUserEvent ignores the start and end times.
Running what appears to be perfectly good code (often copied from Microsoft documentation) only to run into inexplicable failures is frustrating and annoying. A problem like this happening after a succession of flawed releases is especially worrisome because you’d expect Microsoft to have upped their game and improved software release processes.
Cautious Optimism
At this point, just a few days since the release of V2.28, I am cautiously optimistic. Microsoft is closing SDK issues in GitHub as people test the problems reported with previous releases. I have not experienced any new problems, scripts run without problems (aside from my own bugs), and everything works with PowerShell 5.1 runbooks in Azure Automation, as far as I can see (or rather, test). PowerShell V7 runbooks are still problematic and will remain so until Azure Automation supports PowerShell V7.4 in mid-June 2025.
I guess the takeaway is that V2.28 of the Microsoft Graph PowerShell SDK seems to be as stable as V2.25. Given that Microsoft has fixed some bugs, V2.28 is likely a little better. That’s as far as I would go at this point. V2.28 is definitely worth testing in a development environment to make sure that production scripts run with.
Each installation of the Microsoft Graph PowerShell SDK leaves a bunch of modules on your PC. When you install, make sure that you clean out old files and reboot, just to make sure that the new modules are used. To make things a little easier, I have a script to install and clean up modules on a local PC and another to update the Graph PowerShell modules used with Azure Automation.
Next Steps
I doubt that V2.28 will be perfect. New bugs will emerge, and we already know that some reported bugs are not fixed. One issue that I am tracking is where interactive sessions fail to recognize URIs when running cmdlets (including Invoke-MgGraphRequest) and respond with an “Invalid URI: The format of the URI could not be determined.” error. Running Connect-MgGraph to reconnect the session restores everything to good health, but suddenly losing the ability to run cmdlets is a disturbing problem that Microsoft needs to fix.
Overall, I’m not all that worried about seeing a few new bugs or having to wait a little longer for Microsoft to fix known issues. If you do find a bug, please take the time to report it by filing a report in GitHub. Don’t complain if things are not fixed if you don’t report the problem.
All I want is to see V2.28 resort relative stability to the Microsoft Graph PowerShell SDK in such a way that Microsoft 365 tenants can depend on it for day-to-day management of users, groups, licenses, devices, and other objects. That’s not too much to ask.
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.
Import PyTorch LSTM Model into Matlab
Hey Guys,
I am currently trying to use my Pytorch LSTM in Matlab (Trained with Pytorch Lightning) but I have no idea how to use the importNetworkFromPyTorch function with an LSTM. The Structure of the model is the following:
LSTM -> Linear -> Sigmoid
The LSTM properties (https://docs.pytorch.org/docs/stable/generated/torch.nn.LSTM.html) are (num_inputs=3, nhid=5, nlayers=5) which causes the Linear layer to be (in=5, out=1).
The Training Data has the shape [BS, 600, 3] with BS being batch_size, 600 being the time series and 3 being the individual input at one timestep. The shape of the hidden state is [5, BS, 5].
So my problem is that I do not understand what input sizes I have to put into the importNetworkFromPyTorch function.
I expect it so be something like this:
net = importNetworkFromPyTorch("example/path/model.pt",PyTorchInputSizes={[NaN,3], [2, 5, NaN, 5]})
I exported the traced model by:
traced_model = torch.jit.trace(model.model.forward, (input, hidden_input))
torch.jit.save(traced_model, "model.pt")
The shape of input is [3] and of hidden_input is ([5, 1, 5], [5, 1, 5]) (one for hidden state and one for context)
Can you please tell me how to use this importNetworkFromPyTorch function.Hey Guys,
I am currently trying to use my Pytorch LSTM in Matlab (Trained with Pytorch Lightning) but I have no idea how to use the importNetworkFromPyTorch function with an LSTM. The Structure of the model is the following:
LSTM -> Linear -> Sigmoid
The LSTM properties (https://docs.pytorch.org/docs/stable/generated/torch.nn.LSTM.html) are (num_inputs=3, nhid=5, nlayers=5) which causes the Linear layer to be (in=5, out=1).
The Training Data has the shape [BS, 600, 3] with BS being batch_size, 600 being the time series and 3 being the individual input at one timestep. The shape of the hidden state is [5, BS, 5].
So my problem is that I do not understand what input sizes I have to put into the importNetworkFromPyTorch function.
I expect it so be something like this:
net = importNetworkFromPyTorch("example/path/model.pt",PyTorchInputSizes={[NaN,3], [2, 5, NaN, 5]})
I exported the traced model by:
traced_model = torch.jit.trace(model.model.forward, (input, hidden_input))
torch.jit.save(traced_model, "model.pt")
The shape of input is [3] and of hidden_input is ([5, 1, 5], [5, 1, 5]) (one for hidden state and one for context)
Can you please tell me how to use this importNetworkFromPyTorch function. Hey Guys,
I am currently trying to use my Pytorch LSTM in Matlab (Trained with Pytorch Lightning) but I have no idea how to use the importNetworkFromPyTorch function with an LSTM. The Structure of the model is the following:
LSTM -> Linear -> Sigmoid
The LSTM properties (https://docs.pytorch.org/docs/stable/generated/torch.nn.LSTM.html) are (num_inputs=3, nhid=5, nlayers=5) which causes the Linear layer to be (in=5, out=1).
The Training Data has the shape [BS, 600, 3] with BS being batch_size, 600 being the time series and 3 being the individual input at one timestep. The shape of the hidden state is [5, BS, 5].
So my problem is that I do not understand what input sizes I have to put into the importNetworkFromPyTorch function.
I expect it so be something like this:
net = importNetworkFromPyTorch("example/path/model.pt",PyTorchInputSizes={[NaN,3], [2, 5, NaN, 5]})
I exported the traced model by:
traced_model = torch.jit.trace(model.model.forward, (input, hidden_input))
torch.jit.save(traced_model, "model.pt")
The shape of input is [3] and of hidden_input is ([5, 1, 5], [5, 1, 5]) (one for hidden state and one for context)
Can you please tell me how to use this importNetworkFromPyTorch function. python, pytorch, lstm, load nn MATLAB Answers — New Questions
appdesigner – disruptive help popups
Matlab 9.6.0.1472908 (R2019a) Update 9
(I cannot use a newer version because of compatibility issues with others using my code)
How can I disable those super annoying help popups in App Designer when trying to type anything? I cannot see surrounding code, the popups grab the cursor keys, and they never help (me). It seems that they can be disabled easily in newer versions of App Designer, but I could not find a way in 2019a.Matlab 9.6.0.1472908 (R2019a) Update 9
(I cannot use a newer version because of compatibility issues with others using my code)
How can I disable those super annoying help popups in App Designer when trying to type anything? I cannot see surrounding code, the popups grab the cursor keys, and they never help (me). It seems that they can be disabled easily in newer versions of App Designer, but I could not find a way in 2019a. Matlab 9.6.0.1472908 (R2019a) Update 9
(I cannot use a newer version because of compatibility issues with others using my code)
How can I disable those super annoying help popups in App Designer when trying to type anything? I cannot see surrounding code, the popups grab the cursor keys, and they never help (me). It seems that they can be disabled easily in newer versions of App Designer, but I could not find a way in 2019a. popups, appdesigner MATLAB Answers — New Questions
What are the signs that my parameter estimator is on the right track before convergence?
I am doing parameter estimation using parameter estimator app
and the optimization is taking hours
but i have noticed as shown in photo attached that EXP (Minimize ) is not converging and Shows NAN , and i gues this is a bad sign
So How to evaluate parameter estimator performance mid-optimization?I am doing parameter estimation using parameter estimator app
and the optimization is taking hours
but i have noticed as shown in photo attached that EXP (Minimize ) is not converging and Shows NAN , and i gues this is a bad sign
So How to evaluate parameter estimator performance mid-optimization? I am doing parameter estimation using parameter estimator app
and the optimization is taking hours
but i have noticed as shown in photo attached that EXP (Minimize ) is not converging and Shows NAN , and i gues this is a bad sign
So How to evaluate parameter estimator performance mid-optimization? parameter estimator, convergence, optimization, nan, minimization MATLAB Answers — New Questions
How can I change the number of ports for VariantSource programmatic?
I’d like to change the number of ports for the VariantSource block. If I try to change the ‘Ports’ element with set_param command, I get the answer that this field is read-only.
Has anyone an idea how I can change the number of ports programmatic?I’d like to change the number of ports for the VariantSource block. If I try to change the ‘Ports’ element with set_param command, I get the answer that this field is read-only.
Has anyone an idea how I can change the number of ports programmatic? I’d like to change the number of ports for the VariantSource block. If I try to change the ‘Ports’ element with set_param command, I get the answer that this field is read-only.
Has anyone an idea how I can change the number of ports programmatic? matlab;, programming, programmatic, block;, ports;, change;, add;, remove MATLAB Answers — New Questions
wich Matlab-Simulink version support FMU co-simulation ver. 1.0 ?
I have already R2024b version which can export only FMU ver. 2.0 and 3.0 bu t i need FMU CS ver. 1.0I have already R2024b version which can export only FMU ver. 2.0 and 3.0 bu t i need FMU CS ver. 1.0 I have already R2024b version which can export only FMU ver. 2.0 and 3.0 bu t i need FMU CS ver. 1.0 fmu export MATLAB Answers — New Questions
Replacing Litigation Holds with Microsoft 365 Retention Policies
Maybe a Microsoft 365 Retention Policy is Better than an eDiscovery Hold
Last month, I wrote about how to replace Exchange Online litigation holds, which only preserve mailbox content, with holds applied by Purview eDiscovery cases. The advantage gained by this exercise is that eDiscovery holds can also secure the OneDrive for Business accounts owned by specific users, including those who leave the company.
My idea works, but it’s unnatural. eDiscovery cases are designed to secure information required by eDiscovery investigations, not to preserve information for indeterminate periods. Retention policies are the designated Microsoft 365 mechanism to retain information. Still, I enjoyed probing how to use eDiscovery case holds, and the good news is that much of the code written to prove the principle can be repurposed for retention policies.
Using a Retention Policy
A Microsoft 365 retention policy can cover many different types of data. In terms of mailbox data, a Microsoft 365 retention policy isn’t as granular as Exchange (“legacy”) retention tags, nor does a Microsoft 365 retention policy support the move to archive action to move items from a primary mailbox into its associated archive mailbox. For these reasons, Microsoft hasn’t deprecated Exchange retention policies and tags.
The question of granularity doesn’t arise with litigation holds because a litigation hold retains everything in the primary and archive mailbox. We can therefore replace litigation holds with a retention policy to hold everything indefinitely, and that policy will place a hold on everything in the mailboxes and OneDrive accounts that are added as locations to the policy.
Dealing with the 1,000-Location Limit
The only real limitation that exists is the maximum number of locations supported for Exchange mailboxes and OneDrive accounts. A retention policy that uses static locations can add up to 1,000 locations for each type. It’s unlikely that a tenant will have more than 1,000 mailboxes on litigation hold, but if this is the case, the choice is to either split the locations across multiple retention policies or use an adaptive scope to identify the mailboxes. A retention policy based on an adaptive scope isn’t subject to the 1,000-location limit.
The easiest way to mark mailboxes to be found by an adaptive scope is to set a value in one of the fifteen custom properties available for mailboxes. Each of the mailboxes (accounts) covered by an adaptive scope requires an Office 365 E5, Microsoft 365 E5, or Microsoft E5 Compliance license.
Creating the Retention Policy and Rule
A retention policy consists of two parts. The policy defines the set of target locations, like Exchange mailboxes, OneDrive accounts, SharePoint Online “classic” sites, and Microsoft 365 groups. Figure 1 shows the target locations for a “standard” retention policy. Specific retention policies can be created for Teams channel messages, Teams chat and Copilot interactions, and Viva Engage (Yammer) community messages.
The policy rule defines the retention settings, or what the policy does to the items found in the target locations. In this instance, the rule is very simple because the idea is to mimic what a litigation hold often does, which is to apply an unlimited hold. Litigation holds do accommodate a limited duration hold, and it would be possible to recreate this kind of hold with a retention policy, but here we’re just proving the principle, so it’s enough to show how to create the retention policy and a rule to hold continue indefinitely. Here’s the code:
Write-Host "Creating Microsoft 365 retention policy to replace litigation holds..." -ForegroundColor Yellow
$NewPolicy = New-RetentionCompliancePolicy -Name "Litigation Hold Retention Policy" -ExchangeLocation $MailboxesToHold -OneDriveLocation $OneDriveToHold `
-Comment ("Retention policy to replace litigation holds created by Switch-LitigationHoldsforRetentionPolicies.PS1 script on {0}" -f (Get-Date).ToString("dd-MMM-yyyy")) `
If ($NewPolicy) {
Write-Host ("Retention policy {0} created" -f $NewPolicy.Name) -ForegroundColor Green
$NewPolicyRule = New-RetentionComplianceRule -Name LitigationHoldRule -Policy "Litigation Hold Retention Policy" -RetentionDuration unlimited `
-Comment "Created by Switch-LitigationHoldsforRetentionPolicies.PS1 script"
If ($NewPolicyRule) {
Write-Host ("Retention rule {0} created" -f $NewPolicyRule.Name) -ForegroundColor Green
} Else {
Write-Host "Failed to create retention rule" -ForegroundColor Red
Break
}
} Else {
Write-Host "Failed to create retention policy" -ForegroundColor Red
Break
}
If you want to create a more complicated retention rule, it’s probably best to do so via the Purview compliance portal GUI. You can download the script I used from GitHub.
After applying a retention policy, it can take a few days before the policy becomes fully effective. I’d wait a week and then remove the litigation holds from the mailboxes.
Dump Litigation Holds Now
I don’t hesitate to recommend phasing litigation holds out in favor of retention policies. At this point, litigation holds are a dead-end street that Microsoft is putting little or no effort into. By comparison, Microsoft 365 retention policies are more functional and under active development, which makes them a better long-term bet for meeting the retention needs of Microsoft 365 tenants.
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.
I have got the the liquid film surface of x,y,z coordinates and wall temperature data outside a 3D horizontal circular pipe from Fluent, how to calculate and output the 3D
I have got the the liquid film surface of x,y,z coordinates and wall temperature data outside a 3D horizontal circular pipe from Fluent, how to calculate and output the 3D data graph by using MATLAB? Who can provide me the code.I have got the the liquid film surface of x,y,z coordinates and wall temperature data outside a 3D horizontal circular pipe from Fluent, how to calculate and output the 3D data graph by using MATLAB? Who can provide me the code. I have got the the liquid film surface of x,y,z coordinates and wall temperature data outside a 3D horizontal circular pipe from Fluent, how to calculate and output the 3D data graph by using MATLAB? Who can provide me the code. matlab MATLAB Answers — New Questions
