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How to stop double printing text using sprintf ?
Problems: 1- This is the relevant code: VariantModel = compose('%d', 1:height(VariantIDPassed)); .. writefile(VariantModel{i...

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How do I fix my Nan issue within a recursive function?
Replace this (which returns logical indices): FirstID = M==-1; with this (which returns the linear index): FirstID = find(M==...

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How to import multiple .mat files to workspace?
The basic problem is that you are not supplying the filepath to LOAD. You can improve your code as well. I am guessing that you...

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Error in code, parenthesis perceiving as comment for some reason
Explanation: for some reason you seem to be running this literal code: Q_est = updateQ(...) instead of calling UPDATEQ etc. wi...

casi 2 años hace | 1

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smart function to switch functions
You could use STR2FUNC: str = 'ode23'; odesolver = str2func(str); odesolver(@fun,..) or simply use FEVAL: feval(str,@fun,.....

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Reshaping a matrix based on the first row
A = [270,270,270,271,272,272,273,273,273]; B = [ 12, 2, 3, 14, 5, 2, 6, 8, 11]; X = ~isnan(A); C = findgroups(A(X)); R...

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sorting non-exact x/y data into rows and columns, typewriter style
x = [1.01,2.01,1.02,2.02]; y = [1.01,1.02,2.01,2.02]; m = [x(:),y(:)]; % simpler [~,id] = sortrows(round(m),[-2,+1])

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How can I extract an array of numbers from a text-formatted cell array of strings.
C = {'20s';'15m';'';'24s';'';'44s';'3h';'40m';'20s';'';'14s'} F = @(t)prod(sscanf(t,'%f')); V = cellfun(F,regexprep(C,{'h$','m...

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Update an Excel file after each Matlab calculation
You can use a COM server to trigger Excel to recalculate the worksheets: https://www.mathworks.com/matlabcentral/answers/100938...

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Error using (function_name). Too many output arguments.
You did not define the function to return any output arguments: function calcolo_cp(T,fluido) If you intended to return e.g. C...

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Vectorize nested for loops with indices and subscripts
A = [1,2,0,2;2,1,3,0;0,3,1,3;2,0,3,1] matArray = unifrnd(-1,1,[4,4,10]) Method one: [X,Y] = meshgrid(1:size(matArray,3),A(:))...

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Can a custom argument validation function alter the field names of its input variable?
The hard part is not validation, but mapping random fieldnames to your desired fieldnames. Notet that argument validation does ...

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How to write all cells of structure in excel sheet ?
Why is a scalar structure nested inside a (pointless) scalar cell array? Why are lots of scalar numerics stored inside a cell a...

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How to define variable names for resampling?
You should: replace the ISMEMBER with ENDSWITH get rid of those asterisks For example: endsWith(files(i+j).name, {'_B03_10m....

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How should I fix my regular expression to parse this txt file?
"It seems that my regular expression is way too broad and causing this problem." There are several locations where your regular...

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What is the equivalent datetime() call to the clock() function?
Note that DATETIME is an object with properties, so (depending on your requirements) accessing its properties is a simple option...

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How can I convert matrix to cell?
https://www.mathworks.com/help/matlab/ref/mat2cell.html A = reshape(1:40000,100,400)'; C = mat2cell(A,4*ones(1,100),100)

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How to name and save the results using the name of imported file ?
A much better approach is to store the data in e.g. a structure array: P = 'absolute or relative path to where the files are sa...

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Question on creating dynamic matrix variables
"Or alternatively, is there a neat way to do so?" Of course there is: indexing. Either into a numeric array or into a container...

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Building an array of strings that might be empty
"What am I missing?" The differences between strings and characters. Do not mix up string arrays with character vectors (which ...

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Find a value using an index obtained from a different matrix with same dimensions
The efficient MATLAB approach: tmc = readmatrix('Total_matrix_cases.txt'); tmr = readmatrix('Total_matrix_rotation.txt'); [tm...

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Using a menu to generate variables for larger code
For the 1st dialog box: V = str2double(answer); maxvel = V(1); dragco = V(2); width = V(3); mass = V(4); accdur = V(5);...

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3D indices for particular values in a 3D array
Use IND2SUB: X = randi(9,4,3,2) [R,C,P] = ind2sub(size(X),find(X==8))

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how assign cellarray to field Struct
"thank..but it's possible to avoid loop?" Of course (depending on the sizes and classes of APP, SIS, etc): app.Sis = struct('b...

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Generate Array of Random Values
D = sort(randi([-9,9],7,2),2) V = rand(7,13); V = V.*diff(D,1,2)+D(:,1)

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Hi, I want to speed up my script with double loop.
X = permute(A,[3,2,1]) + permute(B,[2,3,1]) The data arrangement in memory is not optimal for that operation. Use BSXFUN for ve...

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How to replace exact char in a cell array from another reference cell array
This is difficult because 'x1' is also a substring of 'x10'. But making a few assumptions it might be possible: A = {'x1', 'x10...

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Merge two matrices taking non-Null values
A = [8,8,8,8,NaN;32,32,25,31,NaN;56,56,43,53,NaN;81,80,60,76,NaN;105,103,78,99,NaN;129,127,95,122,NaN]; B = [8,NaN,8,8,8;32,NaN...

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Dynamically Make a Variable Name
This is MATLAB so the best solution is to use indexing, just as the MATLAB documentation shows: https://www.mathworks.com/help/...

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How to call a function name from function names saved in an array?
prev_output = [1,0,0]; fcs = sprintf('func%s',sprintf('%d', prev_output)); Either use FEVAL: output = feval(fcs,inputs); or ...

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