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Rename and save multiple .mat files.
"the name on the work space is the old name" What do you expect? It's the names of the variables contained in the mat-file. The...

casi 7 años hace | 0

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How to extract text from string at the same location, one line above
"Is there a better/more efficient way of achieving this?" No, I don't think so. However, speed depends on how "each line for ea...

casi 7 años hace | 0

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Respondida
Replace odd numbers with infinity
%% C = randi([100,200],3,6) is_odd = rem(C,2) == 1; D = C; D( is_odd ) = inf returns C = 117 103 107 159 122 ...

casi 7 años hace | 0

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Respondida
Using dir() without changing directory?
Use an absolute path rather than a relative path (as proposed in the comments). It's easier to get it right. Thus try sad = di...

casi 7 años hace | 1

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Respondida
how can I read file from a different directory
If you know the full directory name of 'b' use that, i.e chr = fileread( fullfile( 'c:', 'full', 'directory', 'name', 'of', 'b'...

casi 7 años hace | 1

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creating a matrix in matlab using a text file
It's the brackets, [], that confuses Matlab. Try A = readmatrix( 'output.txt', 'Whitespace',' []' ); I have R2018b so I can'...

casi 7 años hace | 1

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Nested for loop not iterating
I'm just guessing. Replace a_p = agrid(i) b_p=bgrid(j); fhat(i,j)=(a_p(i))-(b_p(j)).*magrange; by fhat(i,j) = ( agrid(i) - ...

casi 7 años hace | 0

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Previously accessible file is now inaccessible
You need to close the file after reading, add fclose( fileID ) after filedata = textscan(fileID, '%s %s %s %s %s %s %s %s')...

alrededor de 7 años hace | 1

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How to convert all the rows containing char values to numbers in a table without for loop?
Replacing str2num by str2double might help. str2num uses eval(), which is slow. str2double takes arrays as input. %% cac =...

alrededor de 7 años hace | 0

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How to extract a vector from a matrix and save in workspace?
"can I use them in a loop using their names" NO but you can loop over the columns of the matrix for jj = 1 : size( M, 1 ) ...

alrededor de 7 años hace | 0

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how do I substitute all negative values in a vector with a random number between 0 and 2
One way >> Y = randi( [-4,4], 1,12 ); % sample vector >> isneg = Y < 0; >> Y( isneg ) = 2*rand( 1, sum(isneg) ) Y = Co...

alrededor de 7 años hace | 0

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Alternative to using global for a very large array
"unjustified waste of memory" Matlab is smarter than that, see Avoid Unnecessary Copies of Data. If LUT is look-up-table a...

alrededor de 7 años hace | 0

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Why eval seems to be faster than other alternatives in this example?!
Testing is tricky >> Untitled5 Elapsed time is 0.167926 seconds. Elapsed time is 0.007457 seconds. Elapsed time is 0.010043...

alrededor de 7 años hace | 0

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Integer check
function isf = isflint( m ) % floating double only % % http://www.mathworks.com/company/newsletters/news_notes/pd...

alrededor de 7 años hace | 0

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Is vaderSentimentScores available in R2019a
No, vaderSentimentScores was Introduced in R2019b. See bottom of the page.

alrededor de 7 años hace | 0

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Regexp lookbehind and lineanchors
"My intent is to match 'c' that is preceded by the beginning of a line and zero or more white character." In the character arra...

alrededor de 7 años hace | 0

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How to use a percentage number time with a matrix
matrix * (100-10)/100

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Matrix Dimensions Must Agree
Is this a copy&paste error? W=imread('copyright1.png'); I=imresize(I,[300 300]); Replacing the line by W=imread('copyright1....

alrededor de 7 años hace | 0

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Opening R2018b .m files in R2019b
Most likely the reason is that your search path of the R2018b installation is not carried over to the R2019b installation. See S...

alrededor de 7 años hace | 0

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selecting rows from C with associated values in D, while using A and B values as references to produce E and F matrices
The script %% ixe = [1,4,7]; E = cat( 2, D(ixe), C(ixe,:) ); ixf = setdiff( [1:7], ixe ); F = cat( 2, D(ixf), C(ixf,:) ); ...

alrededor de 7 años hace | 0

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Append rows to .mat file
See save(filename,variables,'-append') matfile Access and change variables directly in MAT-files, without loading into ...

alrededor de 7 años hace | 0

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How to import textdata & data from Excel spreadsheet into Struct, using for loop?
What is the size of SBOB ? The for-loop % % Let this be for BOB % for i = [12:14,44:60,71:82] % filename1{i} = sprintf('...

alrededor de 7 años hace | 0

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Method to GREEDILY select an optional text using regular expressions?
Try %% nfolders = { 'UD_epoch' 'UD_Epoch' 'epoch' 'Epoch' 'U...

alrededor de 7 años hace | 1

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Calculating storage required to store any certain array(nxn) in the .Mat file ?
Try whos -file matlab.mat See whos, List variables in workspace, with sizes and types

alrededor de 7 años hace | 0

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Assigning letters to numbers
"assign letters to numbers but in reverse (A = 26, B=25, etc)" Why not start by making a function that takes letters and return...

alrededor de 7 años hace | 1

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Variable highlighting isn't working
I guess the problem is with the meaning of "Variables with shared scope". See Check Variable Scope in Editor The gui you refer ...

alrededor de 7 años hace | 1

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Where should we install third-party toolboxes under Windows?
That depends Are you connected to a local network? Do you have a your own drive on a local server? Are the local workstation...

alrededor de 7 años hace | 2

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Call function by path or namespace?
That's a good question. These two Matlab blogs Simple Namespaces and Brilliant Function Handles A conversation about managing ...

alrededor de 7 años hace | 0

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[DEPRECATED] What frustrates you about MATLAB?
Background While experimenting with a function, which I had downloaded from FEX, I encountered the error No such file or dire...

alrededor de 7 años hace | 0

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Is there a way to continue operation during input()?
Something like %% a script named cssm.m while true user_input = waitinput( 'prompt: ', 5, 's' ); if isnan( user_inp...

alrededor de 7 años hace | 0