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plot a surface from a three variable table
If not the below code, then use meshgrid instead of ndgrid This code takes a long time to execute !! The internal triangulation...
2 hours ago | 0
latex interpreter greek symbols
https://www.mathworks.com/help/matlab/creating_plots/greek-letters-and-special-characters-in-graph-text.html Use \nabla
14 hours ago | 0
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Trouble using container with cell type for key and structure array for values..
struct values are not permitted. keys = 100:110; values = struct('abc', num2cell(1:11)) containers.Map(keys, values)
1 day ago | 0
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How to call .dll without header file
The header files is necessary for identifying function "signatures" -- knowing what datatype each function parameter is. So the...
1 day ago | 0
I cannot find R2023a installer. In the drop-down, there is only R2024b.
That can happen if you do not have a MATLAB license registered against your MATLAB Central account.
2 days ago | 0
Error using mupadengine/feval_internal Arithmetical expression expected.
According to a previous thread, the problem is that one of the expressions generates NaN
2 days ago | 0
Not able to get local and absolute max or min of a function or graph symbolically
[num, den]=numden(dy); dy_den=diff(den); % % Case1: If denominator in y' is a constant if dy_den==0 In general, t...
5 days ago | 0
Failed to convert matlab function to dll
NAN and INFINITY is not constant and they actually identified by compiler as function, which defined in corecrt_math.h In C, th...
5 days ago | 0
I haven't defined syms x but solve function gives me values depend on x
The solutions are most naturally parameterized by e2, but you have specified that you want to solve for e2. So solve() has to in...
5 days ago | 1
| accepted
Create a 2D plot with irregular axes
pointsize = 20; scatter(x, y, pointsize, Dataset(:)) This will produce colored round dots at the given locations. Producing s...
6 days ago | 0
Question about sprintf not handling list{:} properly
X = ["a","b","c"] Y = [1, 2, 3] catinated = [X;Y] Look carefully at the output and notice that it is a string array. The nume...
6 days ago | 1
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Using fprintf in a for loop to display the output as a set of coordinate points
The basic problem is that fprintf() consumes all of each argument before going on to the next argument. Combine that with the fa...
7 days ago | 0
How to ensure Matrixes are matching size
K = zeros(4, 1,n); K is initialized to 4 x 1 by something. K(:,:,n)=P(:,:,n-1)*A.'*inv(A*P(:,:,n-1)*A.'+R); P is 4 x 4 b...
7 days ago | 0
Format currency in a uitable in app designer
You need to specify the uitable FontName property, supplying a fixed-width font. Your current problem is that spaces in propor...
7 days ago | 0
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How can I change timetable to timeseries?
timeseries() does not accept duration or datetime times. "Sample times, specified as a numeric scalar or vector, or a cell arr...
7 days ago | 0
How do I change default plot colors to green and blue for multiple patternCustom polar plots?
patternCustom() returns an object handle to lines or else to a surface() object. When you are plotting multiple patternCustom()...
7 days ago | 0
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How can I pass a variable (numeric) through a callback event when I pressed a key in my figure?
set(gcf, 'KeyPressFcn', {@GetData, calibration}); That code does not bind "calibration" to whatever the then-current value of t...
8 days ago | 1
Add fixed colorbar to volshow
You cannot do that. volshow() creates a standalone chart object. There is an internal vol_hbt.Parent.Axes property but it is a ...
8 days ago | 0
optical design add on can't be installed with matlab 2025a.
I am not able to locate a toolbox with the name 'Optical Design and Simulation Library for Image Processing Toolbox' anywhere at...
8 days ago | 0
Extract consecutive elements from a vector in a sliding manner
A = [1 ;2 ;3 ;4 ;5 ;6]; A_slice = buffer(A, 2) now do things with the columns. buffer() requires the Signal Processing Toolbo...
8 days ago | 0
How to get real root of a function using fminbnd?
x=-1:0.01:8; y=@(x) (x).^(4/3); yinv=@(x) -((x).^(4/3)); x_1=-1; x_2=8; [xmin, ymin]=fminbnd(y,x_1,x_2); [xmax, ymax]=fminbnd(...
8 days ago | 0
"I want to use a struct that includes pointers in Embedded Coder."
You may need to use something like coder.ceval() in order to be able to use the pointers. MATLAB and Simulink do not support poi...
9 days ago | 0
Setting size of a figure
You are not exporting the figures: you are exporting the axes, and the axes are different size. The one without the axes does no...
9 days ago | 1
Is the Ordering of the Output from combinations() Documented, Repeatable, and Sensible?
The source code for combinations is readable. The output order is not documented. The calculation is determinstic, so the ord...
9 days ago | 0
Sort vector based on another - How?
l = [ 5 3 2 1] k = [ 2 3 4 1] [l_sorted, l_sortidx] = sort(l); k_sorted = k(l_sortidx); l_sorted k_sorted
9 days ago | 1
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3D bar plot, does not show solid bars
You have negative z data. When you set(gca,'ZScale', 'log') then any shape that has a vertex with negative Z cannot be rendered....
9 days ago | 1
Is it possible to copy/paste myself data ? clipboard ? Shared Memory ?
See https://www.mathworks.com/matlabcentral/answers/534528-how-to-save-serialize-matlab-variables-to-a-byte-string#answer_439768...
10 days ago | 0
Force quit Matlab Online
You can close the browser tab, and then follow these instructions for killing the session: https://www.mathworks.com/matlabcentr...
10 days ago | 0
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Can you use command prompt to input a nifti file?
See uigetfile to prompt for the file name. After you have the file name, you would need to take appropriate importing steps, su...
10 days ago | 0
How to find correct "feature" name for parallel computing toolbox?
license('test', 'Distrib_Computing_Toolbox') See https://www.mathworks.com/matlabcentral/answers/449314-how-do-features-from-li...
10 days ago | 1
| accepted