Answered
Problem istalling ML 2025 on Tower Computer but not Laptop, why?
The most common cause of problems such as these, is if the system with the problem has installed a third-party .m file with the ...

7 months ago | 0

Answered
Live Script calls multiple functions that produce a plot, but only the last one shows up.
Graphics calls that are made directly from LiveScript output in-line, and each time a plot would be erased it instead starts a n...

8 months ago | 1

| accepted

Answered
Same data - different answers
In the first case, you are typing in 14 significant digits; MATLAB stores at most 15 1/2 significant digits. In the second case...

8 months ago | 0

| accepted

Answered
where is SupportSoftwareInstaller.exe in Matlab R2025a
It sounds like you are using Mac, as SupportSoftwareInstaller is still available for Windows and Linux. See https://www.mathwor...

8 months ago | 0

Answered
Help with nested for loops
Vectorized version with no for loops: Duse=[D1_0, D1_1, D1_2]; %Array for D-values Kuse=[K1_0, K1_1, K1_2]; Quse=[Q1_0, Q1_1,...

8 months ago | 1

Answered
The code indicates error with response Invalid value for OPTIONS parameter Algorithm
quasi-newton is a valid option for fminunc but not for fmincon See https://www.mathworks.com/help/optim/ug/fmincon.html#busog7r...

8 months ago | 0

Answered
Why does my code return 'Empty sym: 0-by-1'?
You have misframed k = k0 * exp(-Q/(R*T)) . Written as an equation equalling 0, it would be eqn = k - k0 * exp(-Q/(R*T)) == 0 ...

8 months ago | 1

| accepted

Answered
How to store this type of data with unknown number of them?
Let us experiment N = 100; A = randi(9,N,1); B = randi(9,N,1); C = randi(9,N,1); D = cell(N,1); for K = 1 : N D{K} = ...

8 months ago | 0

| accepted

Answered
Transform variables with underscore symbol into subscripts when exporting to Latex from a Live Script
The key to this is that the left-hand side of an assignment is never formatted. syms t A B f_0 f_1 n positive eqn = f_1 == f_0...

8 months ago | 0

Answered
datetime error in 2025a version
'convertfrom' 'datestr' is not a supported option https://www.mathworks.com/help/matlab/ref/datetime.html#d126e368859 If you ...

8 months ago | 0

Answered
use "set" with trasparent color
Line objects have never supported MarkerFaceAlpha or MarkerEdgeAlpha MarkerFaceAlpha and MarkerEdgeAlpha are used for Scatter p...

8 months ago | 1

Answered
Does sendmail work with TLS v 1.2 ?
https://www.mathworks.com/help/matlab/ref/sendmail.html Note sendmail does not support major email providers such as Gmail an...

8 months ago | 0

Answered
Codegen supported function to delete a file and to check its existence
I believe it would go as follows: C: Use coder.cinclude('<stdio.h>'); coder.ceval('remove', FILENAME); C++: Use coder.ci...

8 months ago | 0

| accepted

Answered
can display .mat files into gui matlab?
Generally speaking, you cannot display .mat files in a GUI. .mat files generally contain collections of variables, but you can g...

8 months ago | 0

Answered
Excel to Simulink real time data streaming
In the form you have phrased the question, it must be assumed that a random location inside the data might be updated (as oppose...

8 months ago | 0

| accepted

Answered
Plotting color data from cell array using plot()
plot(xdata{:}, ydata{:}) is equivalent of plot(xdata{1}, xdata{2}, ydata{1}, ydata{2}) which is going to treat the data as pa...

8 months ago | 0

| accepted

Answered
How do I find second order implicit differentiation (d2y/dx2) of a function in MATLAB
syms x y DY DF y(x) F=x^2+y^2==1; dy=diff(y); dx=diff(F,x); DF=subs(dx,dy,DY); dydx1=solve(DF,DY); dydx=simplify(dydx1) t...

8 months ago | 1

| accepted

Answered
how to save the debugging state at matlab?
Generally speaking, it is not possible to save the full debugging state. Generally speaking, the current state of variables mig...

8 months ago | 0

Answered
I want to remove noise from my audio signal by simplest method?
Suppose you have an input signal that starts with 0.1 and 0.2. Suppose you add noise to the third sample onwards, and after addi...

8 months ago | 0

Answered
Need help debugging given matlab code for school assignment. Recieving weird error need help moving past
b = load('blade.txt'); %Blade specification is modified NREL 5 MW b will generally be a matrix r = b(:,1); %Node radial positi...

8 months ago | 0

Answered
Help fixing fopen error in code
filename = fullfile(files(cntfiles).folder, files(cntfiles).name); [fin, msg] = fopen( filename ); if fin < 0 erro...

8 months ago | 1

| accepted

Answered
If I replace old version (R14) running on a 20 y.o laptop with Windows 7 with all new laptop, newest Windows and latest Matlab version, will my old toolboxes still be useable?
R14 was long enough ago that Mathworks would not permit you to pay retroactive Software Maintenance Service to bring your licens...

8 months ago | 0

| accepted

Question

MATLAB Answers is currently broken
MATLAB Answers is currently undergoing an unspecified down-time. Mathworks knows about the problems and is working on solving i...

8 months ago | 0 answers | 6

0

answers

Answered
Can you help us debug and fix this code entirely?
You can get nearspeech.mat and farspeech.mat as part of the example openExample('audio/AcousticEchoCancellationAecExample')

8 months ago | 0

Answered
Is vectorization worth the trouble with recent MATLAB?
Let us take an example: finding the row indices of the first non-zero row in a 2D matrix. A = full(sprand(10000,500,0.1)); Loo...

9 months ago | 1

Answered
Creating a License manager for a MATLAB app
Mathworks does not provide any particular interface to license managers of any sort. It just provides methods to call external f...

9 months ago | 0

Answered
Filtering column 2 and keeping column 1
mask = filteredData >= THRESHHOLD; selected_time = rawData(mask,1); selected_filtered_data = filteredData(mask); However, i...

9 months ago | 0

Answered
Chase plot changes figure size internally
frame2 = getframe(ax2); writeVideo(vidObj2, frame2); You are fetching graphics data from an axes. It turns out, howeve...

9 months ago | 0

| accepted

Answered
The problem is that when I use vpa(U(x,t), 7) to get the solution with 7-digit decimal precision, MATLAB still outputs a very long and complicated expression. how do I fix it?
Observe: a1 = vpa(sym(pi), 7) a2 = vpa(a1, 10) a3 = vpa(a2, 15) a4 = a3 - pi double(a4) From this we deduce that vpa() co...

9 months ago | 0

Answered
How to avoid scientific notation in stackedplot?
h = stackedplot(....); oldstate = warning('off','MATLAB:structOnObject'); hstruct = struct(h); warning(oldstate); arrayfun(@...

9 months ago | 0