- The first 20% of the rows, starting from the first row?
- the first 20% of the columns, starting from the first column?
- the first 20% of the elements, starting from the first element?
- the first 20% of the values, when the values are sorted by value?
- something else?
getting first 20% of a matrix
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I am getting the first 20% of a (290,2) matrix (so a 58,2 matrix). I was just wondering how this is possible. im presuming there are a number of ways but unsure as to how to do it?
1 Comment
Stephen23
on 27 Apr 2015
Edited: Stephen23
on 27 Apr 2015
What do you mean by the "first 20% of a matrix" ?
Accepted Answer
Guillaume
on 27 Apr 2015
Just use standard matrix indexing:
A = rand(290, 2); %for example;
B = A(1:floor(size(A, 1) * 0.2), :);
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