How can i make a matrix with variables from workspace.

I have made a matrix and saved the matrix lines seeratly, as for example: line1, line 2, line 3

How can I write a for loop for creating a matrix, where the programm asks which lines i want o include in my new matrix.

%Those lines are saved as a vector

line1=simulink_matrix(1,:);

line2=simulink_matrix(2,:);

line3=simulink_matrix(3,:);

[Stephen23]

The MATLAB approach is to use an index:

idx = [2,4,11]; % indices of the rows you want
out = simulink_matrix(idx,:);

Your current approach (with lots of numbered variables) will make this task slow, complex, and very inefficient.

Answer 1

[Kshitij Chhabra]

Hi Marcais,

As Stephen mentioned in one of the comments, creation of numbered variables would be an in-efficient approach. However as you mentioned that, you want the program to ask the lines which you want to include in the output, I can recommend using the "input" keyword inside a for loop and then perform the related options accordingly. You can check the follwing code for reference

You can check the documentation for input here.