Rename dynamically columns name of a vector inside of a for loop

I want to generate in a loop several vector of values, give to them a name, and append each vector of values with its name as a column in a empty vector I initialized in the beginning.

%to save the final values
detail_coefficients = []; %empty vectors initialize at the beginning
approximation_coefficients = [];

for kk=1:decomposition_level(which_l)
d= wrcoef('d',C,L,wavelet_name(which_l),kk); %generate the vector of values 
detail_coefficients = [detail_coefficients, d]; %append the vector
a= wrcoef('a',C,L,wavelet_name(which_l),kk); %generate the vector of values
approximation_coefficients = [approximation_coefficients, a]; %append the vector
end

The code is running as I expected (I have not included in the code here what means C,L, which_l), but my question is,How can I give dynamically names to the columns

(I want the first column generated of d to be d1, the second d2,etc.). I have tried with eval using the following code, but without success

eval(['d_' kk ' = d;'])

Any idea how to give (dynamically) names to the columns?

(I have read in posts about to better save the values in cell arrays, but I found this way easy because after I want to export the vectors detail_coefficients and approximation_coefficients to R.)

[Stephen23]

"I found this way easy because after I want to export the vectors detail_coefficients and approximation_coefficients to R"

Exporting will be much easier using indexing, rather than your complex and inefficient approach.

Answer 1

[Mathieu NOE]

hello Sara

if you stick to the eval method , this is how you should code it :

eval(['d_' num2str(kk) ' = d;'])

[Sara Alonso Vicario]

Hello Mathieu!

It works, you have helped also in other of my questions!:) I really appreciated!

[Mathieu NOE]

hello Sara

glad it helps !

have a good day