Storing string of a loop

Hello, good morning, everyone. I was wondering if someone could help me.

I have a loop and I need to save in a single-row matrix and as many columns as I enter in the loop by two, a string containing the iteration of the loop I am in and also text.

What I had done was to use A = sprintf () but I don't know how to store the information I get in an array. I leave a short example so you can see what I need to get.

pos = 1;
for i = 1:4
    col(pos) = sprintf('X_',i)
    col(pos+1) = sprintf('Y_',i)
    pos = pos + 1;
end

The resoult should be the next one:

col =

  1×8 cell array

    {'X_1'}    {'Y_1'}    {'X_2'}    {'Y_2'}    {'X_3'}    {'Y_3'}    {'X_4'}    {'Y_4'}

Answer 1

[Stephen23]

Your code has multiple bugs, in particular wrong indexing into the cell array, missing format specifier in the |sprintf| format string, and you are overwriting half of your data on each iteration. Try this instead:

num = 4;
col = cell(2,num); % preallocate.
for k = 1:num
    col{1,k} = sprintf('X_%d',k); % I fixed your format string.
    col{2,k} = sprintf('Y_%d',k); % I fixed your format string.
end
col = col(:).'

Giving this cell array:

col = 
    'X_1'    'Y_1'    'X_2'    'Y_2'    'X_3'    'Y_3'    'X_4'    'Y_4'

[Alejandro Fernández]

Thank you so so much!!