random selection of a cell
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Hello,
I have a cell(matrix) of size 100*100.I need to scan each column and choose 4 consecutive random cells( (1*1)*4) for assigning values.Can anyone please help me with this?
Thanks in advance
Accepted Answer
KSSV
on 22 Jul 2020
You got 100 columns.....you can pick any one element/ position out of it randomly using randperm.
% loop for each column
for i = 1:100
% pick element randomly
p = randperm(100,1) ;
end
More Answers (1)
Bruno Luong
on 22 Jul 2020
A = zeros(100,100);
something = 1;
for c = 1:100
r = randi(97) + (0:3);
A(r,c) = something;
end
3 Comments
Bruno Luong
on 22 Jul 2020
Edited: Bruno Luong
on 22 Jul 2020
Replace "r = randi(97) ..." by
ncons = 4;
r = randi(size(A,1)-ncons+1)+(0:ncons-1)
You also specify 4 consecutive rows in your original question. Feel free if you want change 4 to something else.
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