How can I delete even rows in a matlab Matrix
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Mehdi Jaiem
am 23 Nov. 2020
Kommentiert: Mehdi Jaiem
am 23 Nov. 2020
Hello
My Idea consists in deleting every row with an even index (I wanted to test something).
But this code does not seem to work.
I get the error " Matrix index is out of range for deletion. "
Thank you
Y=magic(10)
%T = Y (1:2:end , 1:3:end );
T=Y
[a,b]=size(T);
for i = 1:a
r=rem(i,2);
if (r == 0)
T(i, :)=[];
end
T
end
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Stephan
am 23 Nov. 2020
Bearbeitet: Stephan
am 23 Nov. 2020
>> A = [1 2 3; 4 5 6; 7 8 9; 0 -1 -2]
A =
1 2 3
4 5 6
7 8 9
0 -1 -2
>> A(2:2:end,:) = []
A =
1 2 3
7 8 9
3 Kommentare
Stephan
am 23 Nov. 2020
A(:, 1:3:end) = [];
will delete every third column without copying te wanted ones. If you dont want to use this syntax you have to use a loop - but why should you do this?
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