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per isakson


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Answered
How do I make this a function?
Something like this. With Matlab it's common practise to use double for all numerical variables. (Matlab has "integer in floatin...

5 days ago | 0

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Answered
Create table from structure - alignment
I've modified the format specifier. %% mom.a = 1; mom.b = 2; mom.veryLongName = 3; header = {'Moment'; 'Value'}; fnames = ...

10 days ago | 0

Answered
How to replace a number in a row vector with NaN in certain condition
abs(x(6)-x(8)) is equal to 10. Accourding to x_new, x(8) should be replaced by NaN. Thus I have use ">=". %% vec = [15 13 9 ...

14 days ago | 1

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Answered
Getting Windows to open a file type using a MATLAB application
An alternative that doesn't require the Matlab compiler (but requires a Matlab license to run): Create a bat-file, e.g. read_xl...

15 days ago | 0

Answered
How can I read a '.dat' file on MATLAB?
google says: "A file with the . dat file extension is a generic data file that stores specific information relating to the progr...

17 days ago | 0

Answered
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 )

20 days 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...

21 days ago | 0

Answered
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 ...

21 days ago | 0

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

22 days 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...

23 days ago | 0

Answered
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...

24 days ago | 0

Answered
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...

24 days 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" ...

26 days 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 <= ...

26 days 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)

27 days 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...

27 days 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 ...

27 days 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...

28 days 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...

29 days ago | 1

Answered
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 ); %...

1 month 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, '...

1 month ago | 0

Answered
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.

1 month ago | 0

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

1 month 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...

1 month 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...

1 month 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...

1 month ago | 0

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

1 month ago | 0

Answered
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...

1 month 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...

1 month 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) ...

1 month ago | 0

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