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How to quickly find the indecies of elements in an array?
A = [1 9 2 8 3 7 4 6 5]; B = [5 6 7]; [~,ix] = ismember( B, A )

4 months ago | 0

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Answered
creating a character array in which each element takes multiple characters put together
The RHS of the two assignments in the for-loop are they correct? Don't show data as images. Seven lines can be included as cod...

4 months ago | 2

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Why is command window printing out all the code?
There is a function called echo(), which I've never used. Have you run echo on by mistake? I reproduced the behavior you see ...

4 months ago | 0

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Extracting data using regular expression
"all the columns [...] named "Physics", "Time", "dt", "Progress", "Nonlinear Iteration" "Linear Iterations"...."Nodes After Adap...

4 months ago | 1

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Answered
Load .dat files from subfolders with different names
Yes to both questions. With help of the code snippets below I guess you can put together a script. sad = dir( fullfile('Folder...

4 months ago | 0

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Index exceeds the number of array elements (1).
Here are some links on debugging in Matlab Debug a MATLAB Program Debugging in MATLAB Debugging session Debugging Approaches...

4 months ago | 0

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Specific values in an Array
R=[]; for i=1:1:5 for y=5:1:10 eq1=i*y; %% To save the values: R=[R; i y eq1]; end end a...

4 months ago | 1

Answered
Auto fetch input files to process from a specified folder
"I have a lot of data files that I would like to process through my code [...] each file from a specified folder one at a time" ...

4 months ago | 0

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Answered
Plotting a limited number of elements
"plot the first 5" An if-statement should do that. Replace plot(jvals(i,:), vetor_momentoj(i,:), '-o'), hold all by if i <= ...

4 months ago | 1

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Answered
How to modify a function handle?
That's simpler than you thought %% f1 = @(y) y; f2 = @(y) f1(y)*2; %% f2(5)

4 months ago | 0

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Answered
Storing variables in a for loop within another
"store the variable "vetor_momentoj" [...] in terms of the indexes i and j." Something like this? I replaced the calculation of...

4 months ago | 0

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Answered
Calculate with initial value
There is nothing that terminates the execution of the loop when convergence is reached. Thus, the while-loop will run until the ...

4 months ago | 1

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Answered
How to save data from a file with text and numbers?
"load this file and save lines starting from 'Step' to 'ID Type' to another file" Including the "ID Type" block - or not ? Thi...

4 months ago | 0

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Answered
what's wrong with this "IF" in the code below?
Cannot tell based on the info of your question. Show full error message. Set Pause on Errors Run the code. Execution will h...

4 months ago | 1

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how to delete data with special value in an array?
"to delete the value" Do you mean remove? If so, try this script which uses logical indexing %% vec = 1+2*randn( 1, 800 ); %...

4 months ago | 0

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Answered
conversion of date from yyyymmddHHMMSS format to yymmddHHMMSS format.
vec = datevec( '2020,07,23,00,00,00', 'yyyy,mm,dd,HH,MM,SS' ); datestr( vec, 'yymmddHHMMSS' ) or did you mean datestr( vec, '...

4 months ago | 0

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I am getting "Too few input arguments." error. How can i solve it?
See Not enough input arguments. And see narginchk - Validate number of input arguments.

4 months ago | 0

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Trying to see if a variable is an integer or not
Try this %% x=2.5; answer = ( x == floor(x) )

4 months ago | 0

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Answered
Not enough input arguments.
You need to call the function, Lorenz, with two input arguments: t and x. E.g. %% x = (1:6); t = nan; xprime = Lorenz( t, x...

4 months ago | 0

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Answered
Help indexing: How to index at the interfaces of cells and not the cells
Index in position 2 exceeds array bounds U(:,j+2) is most likely the problem. I assume that the size of U is NEQxN. The max...

4 months ago | 1

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Answered
Problems in reading large matrix with large empty cells
This script reads your sample file %% opts = fixedWidthImportOptions('NumVariables',36,'DataLines',4,... 'VariableNames',{'IN...

4 months ago | 0

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Answered
out of memory error for large data
See How to export complex-valued matrix to HDF file

4 months ago | 0

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Error: Not enough input arguments
Accourding to the definition function [ U_RK ] = RK4( U_T, Res, dx, dt, k, N ) requires six input values. Your call of the fun...

5 months ago | 0

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Answered
Best Matlab Editor replacement?
I have not always been loyal to the Matlab editor (ME) Long time ago I used the full version of the ED editor that comes (or di...

5 months ago | 0

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Answered
Getting error while deleting every row of the matrix M that contains the variable x
The trick is to iterate in reverse order, i.e a:-1:1 instead of 1:a. Try this %% M = magic(5); x = 13; N = Delete_var(x,M) ...

5 months ago | 0

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Answered
How to remove both leading and trailing zeros from a binary string?
Is this what you look for? %% A=["00000001111";"00000110010";"10111011100";"00001000110";"11111010000";"00000001010"]; %% B ...

5 months ago | 0

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Answered
MATLAB Answers Wish-list #5 (and bug reports)
I wish Answers would automatically reject comments like "I did that but it didnt work"

5 months ago | 3

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I want to read a bunch of files inside a loop function in MATLAB, but when I try the following code:
What do you suppose that the following statement will do? j = (i * 2000000); Replace A = dlmread('gr_at_0.l_%d', j); by A =...

5 months ago | 0

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unable to make directory in specified folder
"it won't recognize this slef-made folder" Did you add it to Matlab's search path? On my system, R2018b,Win10, your script wo...

5 months ago | 1

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How to import a function from another package
Your folder, Model, is not a Matlab package. Package folders always begin with the + character. See Packages Create Namespaces....

5 months ago | 0

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