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per isakson


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Answered
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')...

4 days ago | 0

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Answered
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 =...

6 days ago | 0

Answered
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 ) ...

6 days ago | 0

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Answered
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...

6 days ago | 0

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Answered
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...

6 days ago | 0

Answered
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...

6 days ago | 0

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

7 days ago | 0

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

7 days ago | 0

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Answered
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...

7 days ago | 0

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

7 days ago | 0

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Answered
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....

8 days ago | 0

Answered
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...

8 days ago | 0

Answered
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,:) ); ...

8 days ago | 0

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

9 days ago | 0

Answered
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('...

9 days ago | 0

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

10 days ago | 1

Answered
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

10 days ago | 0

Answered
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...

13 days ago | 0

Answered
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 ...

15 days ago | 1

Answered
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...

16 days ago | 1

Answered
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 ...

19 days ago | 0

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Answered
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...

1 month ago | 0

Answered
What's the best way to open and read a .out file in MATLAB?
If the file contains columns of data, you may want to try the interactive tool Import Data Notice that this tool can generat...

1 month ago | 0

Answered
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...

1 month ago | 0

Answered
how to re-assign variable within for loop
A long shot. Replace table=[data1;data2] by if i == 0 table = data1; end table = [table;data2]; %#ok<AGROW> data1 = ...

1 month ago | 0

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Answered
How to use textscan on a cell array without a loop?
Am I on the right track? Run %% mystruct.out = { '%ACCDA,50,123.99,W,07512.001,E,2,11,2.2,1002.2,Z,,,,*22' ...

1 month ago | 1

Answered
How to replace values above a given percentile by nans
Ignore the NaNs explicitely when calculating the percentile. Try %% % Table with nan t = array2table(vertcat(horzcat([1:1000...

1 month ago | 0

Answered
how to access abstract class in matlab
I'm not sure, I exactly understand what you mean. However, I try "how can I access this abstract class" You cannot "access" an...

1 month ago | 0

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Answered
Updation of Cell Array
Is something like this what you are looking for? I don't quite understand what you tried. Try this code %% Sample data cell...

1 month ago | 0

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Answered
how to assign multiple strings to single variable
Try >> jan = arrayfun( @(num) sprintf('jan_%4d',num), (1958:2018), 'uni',false ); >> jan(1:3) ans = 1×3 cell array {'...

2 months ago | 0

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