Answered
Error using assignin in a nested m function
Assignin is something you should generally try to avoid. It has many hazards. In this case, where myfunction is nested in mywo...

4 months ago | 1

Question

Migrate R2025a preferences to a new computer that is running R2025b
I am installing R2025b Matlab on a new computer. The new computer has no prior Matlab installations from which previous preferen...

4 months ago | 1 answer | 1

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Question

As of R2025ab, are all figures now uifigures?
Prior to R2025, the result of the code below was tf=0. Have the figure and uifigure frameworks been unified somehow? Is that why...

4 months ago | 1 answer | 1

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answer

Answered
Imtile resolution changes with figure height
So Ive noticed when y figure is 1500 x 600, the images look a lot better than when the figure is only 300 high - even though wit...

4 months ago | 0

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Answered
Where did the zoom icon and other tools go in Release 2025b?
In the version I had installed previously, there was a "zoom" button shaped like a small magnifying glass in a toolbar along wit...

4 months ago | 1

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Answered
How can I measure the pixel size
If you know the real world distance D (e.g. in millimeters) between two points on the PCB, and if these points are N pixels apar...

4 months ago | 0

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Answered
Find roll, pitch, and yaw from the same vector in two different coordinate systems
So this is a system of equations with three equations and three unknowns, so there should be sufficient information. No, there ...

4 months ago | 0

Question

Free boundary of a tetrahedral mesh has interior-crossing edges
I have the following tetrahedralized solid, a right prism with a non-convex base, load data %Solid display tetramesh(TET,'F...

4 months ago | 1 answer | 0

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Answered
Value to differentiate is not traced. It must be a traced real dlarray scalar. Use dlgradient inside a function called by dlfeval to trace the variables.
rawOut = extractdata(rawOut); dY8 = extractdata(dY8); dY18 = extractdata(dY18); If you pre-convert all your input...

4 months ago | 0

Answered
Why the optimization results of lsqnonlin are different in R2026a and R2025a?
There appears to be a new (and buggy) implementation of expm.m in R2026a, resulting in incorrectly complex results for skew sym...

4 months ago | 1

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Answered
Quick substitution of all multi-objective optimization results (gamultiobj) into optimization expressions
Obviously I can build a loop over ii to get an array Mval, but is there a way to do it more elegantly? Doesn't seem it like it....

4 months ago | 0

Answered
Why is xlim not working?
Calling axis equal triggers an xlim,ylim adjustment. % Set parameters for main circle center = [3,6]; radius = 2; angleStart...

4 months ago | 1

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Submitted

A class for successive matrix products
A class representing products of matrices, internally storing/manipulating them separately.

4 months ago | 2 downloads |

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Answered
How to define size of class property depending on a given parameter (including codegen)
With the classdef below, you can set the default size with its defaultSize() static method. This will remain in effect until the...

4 months ago | 1

Answered
"help" does not work
Possibly help.m is calling a function which you have shadowed. You will probably have to use dbstep to track this, or the equiva...

4 months ago | 1

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Answered
App Designer: How can I use an index to increment a Value field such as editfield1.value, editfield2.value, editfield3.value, etc.?
It would be better to use a uitable for this, or at least to use numeric EditFields instead of textual EditFields. Regardless, ...

4 months ago | 0

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Answered
how to upscale the dimensions of a matrix to match the dimensions for a second matrix?
Use imresize load Carbon load Rain rainResized = imresize(rain, OutputSize=size(bc_aod)); tiledlayout('h') nexttile im...

4 months ago | 0

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Answered
rmpath does not remove folders on path
No, as you have been warned "/Users/siggia/Dropbox @RU Dropbox/Eric Siggia/Desktop/claude/matlabCP1" is not on your Matlab path....

4 months ago | 0

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Answered
Discrepancy in sparse matrix math, when NaN's present
The response I seem to be getting from Tech Support is that this is expected behavior. NaNs are not guaranteed to propagate the ...

4 months ago | 0

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Answered
Numerical Integrators With Problem-Based Optimization
but quickly realized that the class of variables used in the problem-based approach will not work with ode45 (or any root-findin...

4 months ago | 1

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Question

Discrepancy in sparse matrix math, when NaN's present
I expect result1 and result2 below to be identical, but they aren't. The discrepancy must be a bug, right? I'm working in R2024b...

5 months ago | 1 answer | 0

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answer

Answered
Create a 2D image based on what a camera would see
You could just do a surface plot of the object, set the camera position parameters of the axes, and then use exportgraphics (whi...

5 months ago | 0

Answered
Assigning different data types to struct arrays using comma separated list assignment. Are there better options?
I like the performance of the code, however, I find it more difficult to read than for-loops Why not just use for-loops then, i...

5 months ago | 0

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Answered
I am getting the following error
There are many ways to generate that error. One of them is that you may be using 'end' as the name of a variable, e.g., end=1

5 months ago | 0

Answered
How to extract a specific frame from a video based on user input?
This example looks applicable to you: Read Video Frames Starting at Specific Time.

5 months ago | 0

Answered
Why do Nan values greatly increase the cost of sparse multiplication
I think you should report it as a bug. If you need a workaround, though, the following equivalent operation, which avoids implic...

5 months ago | 0

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Answered
How can I execute a function if it exist, otherwise use a custom function?
Have the used append (i.e., not prepend) your knnsearch to the path. If a native knnsearch exists above it in the path, it will ...

5 months ago | 0

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Answered
how to create a volume from the revolution of a variable area trapezoid
Here's a little bit more of a polished version of my original answer, which also generates a movie of the trapezoidal cross-sect...

5 months ago | 3

Answered
how to create a volume from the revolution of a variable area trapezoid
Along the lines of what @Mathieu NOE commented, I think it does make more sense to start with an elliptic cylinder and clip off ...

5 months ago | 3

Answered
Efficiently assign data into a struct?
You can replace all occurences of '1:end' with ':' and condense your indexing operations. This, for example, T1.var4.y = zer...

5 months ago | 0