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I am trying to incorporate multiple IF statements in my ODE to generate a single output.
The mathematics of ode45 and similar routines is such that the second derivative of the input expressions must be continuous ove...

11 months ago | 2

Answered
How to specify intervals of increasing, decreasing of a function in MATLAB
Start at the left end of the interval. Record sign() of dy there, along with the current position. Move right one position. Calc...

11 months ago | 1

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Answered
How to get mod symbol
title('$||\nabla||$', 'interpreter', 'latex')

11 months ago | 0

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Answered
I want to make that makes graph move with a direction keyboard.
The easiest way is to have a figure, and attach a KeyPressFcn property to the figure; https://www.mathworks.com/help/matlab/ref...

11 months ago | 1

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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...

11 months ago | 0

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latex interpreter greek symbols
https://www.mathworks.com/help/matlab/creating_plots/greek-letters-and-special-characters-in-graph-text.html Use \nabla

11 months ago | 0

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Answered
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)

11 months ago | 0

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Answered
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...

11 months ago | 0

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Answered
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.

11 months ago | 1

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Error using mupadengine/feval_internal Arithmetical expression expected.
According to a previous thread, the problem is that one of the expressions generates NaN

11 months ago | 0

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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...

11 months ago | 0

Answered
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...

11 months ago | 0

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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...

11 months ago | 1

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Answered
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...

11 months ago | 0

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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...

11 months ago | 1

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Answered
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...

11 months ago | 0

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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...

11 months ago | 0

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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...

11 months ago | 0

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Answered
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...

11 months ago | 0

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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()...

11 months ago | 0

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Answered
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...

11 months ago | 1

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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 ...

11 months ago | 0

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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...

11 months ago | 0

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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...

11 months ago | 0

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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(...

11 months ago | 0

Answered
"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...

11 months ago | 0

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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...

11 months ago | 1

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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...

11 months ago | 0

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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

11 months ago | 1

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Answered
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....

11 months ago | 1