I want to build a structure that includes multiple matrices

I want to build about 100 matrices that are just zeros that have three columns and one row.

I then want to populate these matrices with positions for a point that fits the criteria of each matrix (making the matrix start at 1 row to however many it ends up with).

how can I do that?

Answer 1

[Stephen23]

A cell array would be simpler than a structure:

>> C = num2cell(zeros(100,3),2);
>> C{1}
ans =
   0   0   0
>> C{2}
ans =
   0   0   0
etc