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why am I getting this error ? Any help please
filename = file_list{i}; data_in = readtable( fullfile(path_n, filename) );

2 days ago | 1

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MATLAB doesn´t open after activation
See https://www.mathworks.com/matlabcentral/answers/106141-why-am-i-continuously-prompted-to-activate-when-i-try-to-launch-matla...

3 days ago | 0

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modifying an identity matrix
I = eye(7) r = size(I,1); newI = diag([ones(1,r-2), 0],-1) + I

3 days ago | 0

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Answered
Help with neighbor function - inconsistent node connections
MaxNeigh = 3; neigh = zeros(MaxNeigh,1); coder.varsize('neigh', [MaxNeigh 1], [1 0]); %second dimension is fixed neigh = ...

3 days ago | 0

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How to convert an optimization variable to symbolic variable?
It does not appear to be documented, but use optimexpr2fcn() on the optimization expression, to get back a function handle to a ...

3 days ago | 0

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Answered
Data dimensions must agree. Using surf
[pA, T] = meshgrid(7600000:100000:20000000, 313:1:373); mu = ((((-0.1146067)+(0.000000697838).*(pA/100000)+(0.0000000003976765)...

3 days ago | 0

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Answered
Compiling CUDA files with mexcuda in matlab2021b report error
Look at https://www.mathworks.com/content/dam/mathworks/mathworks-dot-com/support/sysreq/files/system-requirements-release-2021...

3 days ago | 0

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How to use lsqnonlin command for solving a cost function minimization problem which consists of optimization variable?
C = [0 0 0 1 0 1 0 0]; D = [0;0]; x = [zeros(4,1)]; u = optimvar('U',2); f=0; % for loop here to create an object...

3 days ago | 0

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How would I detect gray/white pixels in a picture?
Convert for HSV, check for "high" V (near 1) and "small" (near 0) S. You will need to decide on the exact boundaries, depending ...

3 days ago | 1

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Answered
Use workspace variable in equation solver
syms x y eqn = x + y == 25 y = 5 subs(eqn) y = 9 subs(eqn)

3 days ago | 0

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What does the warning "Integrand function outputs did not match to the required tolerance" mean?
Yes, it does mean the value is inaccurate. It means that the value is probably meaningless. You probably used / or * instead of...

3 days ago | 1

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Send data from an array to NumericEditFields
app.Simul = sim(app.Calling.net_SOLD,app.D2); app.EditField_1.Value = app.Simul(1); app.EditField_2.Va...

3 days ago | 1

Answered
Can one of MATLAB's optimization algorithms (e.g. particle swarm optimization) take the place of this brute force parameter sweep iteration?
In theory, NO, none of those functions can take the place of a parameter sweep for a generalized calculation. There are calcula...

3 days ago | 0

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Answered
Difficulties in Assembling an array from NumericEditFields in app designer
app.D1 = [app.Is.Value; app.Us.Value; app.Vs.Value; app.Es.Value]; Or... you could leave app.D1 as it is, and at the time you n...

3 days ago | 1

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Answered
Convert some Table Variables from Cell to Double
for i = 1 : length(holdNames) thisname = holdNames{i}; T.(thisname) = str2double(T.(thisname)); end

3 days ago | 0

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Answered
Add dates in x-axis of every graph
datetick() is not "sticky": it does a one-time conversion of the xlim range into formatted ticks, or (depending on the option) t...

3 days ago | 0

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how to find specific string out of a list in an excel
data = readtable('FileNameGoesHere'); mask = data{:,ColumnNumberGoesHere} == 9; subset = data(mask,:); writetable(subset, 'sa...

3 days ago | 1

Answered
Two variables concatenation to one in Simulink
How do you want distinguish these cases: A = 1234 B = 567 A = 123 B = 4567 What do you want to do if the values are negative...

3 days ago | 0

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How to compile MEX binary that only works on 64 bit Linux to use it on macOS?
It is not necessary to cross-compile; the GIT repository includes the .cpp source code (and the .c sources needed for different ...

3 days ago | 0

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Answered
Can I run MATLAB (R2017 or newer) on a Lenovo Chromebook with an AMD A4 processor?
No, the only supported operating systems are Windows, Linux, and MacOS. ChromeOS is not supported.

3 days ago | 0

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how can I plot this figures
https://www.mathworks.com/help/matlab/ref/histcounts2.html can be used to calculate the counts for density plot purposes. images...

4 days ago | 0

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How to concatenate/combine a list of images in one mat.file (convert picture 1 into picture 2)
What you are asking for is possible but not recommended. You are asking to open the variable browser on each field of the struct...

4 days ago | 0

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Fmincon Error Message please help!
In order to get that error at that line of code, your function Obj_Complex had to have generated an error message when evaluated...

4 days ago | 0

Answered
OPEN(OPEN_COUNT,:)=insert_open(xNode,yNode,path_cost,goal_distance); how to solve this error please help fast
https://www.mathworks.com/matlabcentral/fileexchange/26248-a-a-star-search-for-path-planning-tutorial has the source code

4 days ago | 0

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How can i reshape a matrix
reshape(permute(M1, [1 3 2]),[],size(M1,2))

5 days ago | 0

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Answered
How to show the cross cursor (instead of arrow) when clicking on the UIAxes in the App designer? How to save several coordinates when clicking for times via upButtonfunc?
https://www.mathworks.com/matlabcentral/answers/496366-how-do-i-change-the-pointer-property-on-a-ui-figure for information on...

5 days ago | 0

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Answered
How to obtain coordinate using 'ginput' in the UIaxis when coding in Appdesigner
See https://www.mathworks.com/matlabcentral/answers/392617-how-can-i-use-ginput-in-app-designer#answer_504862 for code. Requires...

5 days ago | 1

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Answered
Unable to run code due to an error in 'Fadeeva_m' function
you need to run the build script to compile faddeeva_w https://www.mathworks.com/matlabcentral/fileexchange/38787-faddeeva-pa...

5 days ago | 0

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How to convert negative numbers in parentheses (bank-formatted text) to numbers with minus sign?
Use detectImportOptions and then modify the options to set that column to character or string type. Then regexprep() the column,...

5 days ago | 1

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WHEN I AM EXECUTING THIS CODE I GET A JULIA IMAGE .HOW CAN I READ THIS IMAGE IN THE CODE AND USE THIS TO GENERATE KEY FOR ENCRYPTION CRYPTION
Bre = im2uint8(rescale(B)); imgfile = 'B.png'; cmap = jet; Bc = ind2rgb(Bre, cmap) ; imwrite(Bc, imgfile) I =...

5 days ago | 0

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