row filtering and pre-allocate

hi all,

here p is (1,3) vector,:

1. how can I preallocate a.
2. how can store each filtered rows in a seperate matrix.

Regards

for i=1:length(L);

a=p(p(:,3)==L(i),:);

end

Answer 1

[madhan ravi]

a = cell(numel(L),1);
for ii = 1:numel(L);
    a{ii} = p(p(:,3) == L(ii),:);
end
celldisp(a)

%or
a = num2cell(p(any(p(:,3) == L, 2), :),2)

[Oday Shahadh]

how can I edit each matrix, typed a(1) showed just its size

a(1)

ans =

[185x3 double]

[madhan ravi]

https://www.mathworks.com/help/matlab/matlab_prog/access-data-in-a-cell-array.html