MATLAB: How to create variable in workspace with a cycle for script

create variablesname variablesvariables

Hi, I'm trying to create variables in workspace with a "cycle for" script. I'd like to assign to each variable the column name of the input Excel sheet. I thought to use a generic variable in the cycle to assign the input values (txt, num and dates) in n cycle, but I can't save it in ws in a dynamic way. Have you any suggestions? Thanks a lot

Angelo

Best Answer

And now as answer and not as a comment:

Please read the document linked by Stephen very very carefully and if you are not convinced immediately, read it again.

You find 1000 equivalent discussions in this forum and they all have the same solution: Don't do this.

If you find this answer useful, remember that I only point to Stephen's valuable comment, so vote for his thread. Thanks.

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MATLAB: Ascending table column labels

Use the compose function (R2016b and later versions):

colnames = compose("Cycle %d", 1:size(matrix,2));

Alternatively, use the sprintfc (undocumented) function:

colnames = sprintfc("Cycle %d", 1:size(matrix,2));

No loop necessary.

MATLAB: Create single variable from workspace variables

Hi Juri,

You can get the names of all variables in your workspace using 'who' and you can access the variables with the corresponding names with 'eval'.

I am providing the code for your problem assuming all the variables in your workspace are of same dimensions (column arrays).

clc;
clear;
one=randi(100,10,1);   %creating random number column arrays.
two=randi(100,10,1);   %You can remove these three lines along with the clc and clear on top.
three=randi(100,10,1);
k=who;                   %getting the names of all the variables in workspace.
len=length(k);          %calculating the number of rows(variables).
y=[];
for i=1:len
    if(i==1)
        y=eval(k{i});
    else
    y=[y eval(k{i})];       %creating a matrix from the variables.
    end
end
t=array2table(y,'VariableNames',k')     %creating the table from the matrix with the variables names on top of the coulumn.

't' here is the final table you wanted.

Hope this clears your query.

Thanks,

Aditya.

Best Answer

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MATLAB: Ascending table column labels

MATLAB: Create single variable from workspace variables

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