how can i delete the extracted rows from the original matrix ?

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MAHMOUD ALZIOUD
MAHMOUD ALZIOUD 2017-11-22
评论： MAHMOUD ALZIOUD 2017-11-27
Dear All, I have an original matrix called M that is 1000*15, I extracted a matrix from it based on a condition and is called Tand, Tand is 400*15, now how can i delete the extraced rows from the original matrix? i wrote this but it didnt work, because the size of M is still 1000*15 instead of 600*15 !! please help
Tand= M(M(:,15)<6, :); % this is the extracted one with 400*15 dimension.
M(Tand, :)= []; %this is to delete all the rows from M that belongs to Tand.
%where is the problem?

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James Tursa
James Tursa 2017-11-22
x = M(:,15)<6; % Remember the logical indexes of the rows
Tand= M(x, :); % this is the extracted one with 400*15 dimension.
M(x, :)= []; %this is to delete all the rows from M that belongs to Tand.
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James Tursa
James Tursa 2017-11-27
Can you show a short code snippet of what you are trying to do with the files?
MAHMOUD ALZIOUD
MAHMOUD ALZIOUD 2017-11-27
Mr James I just solved it based on your advice, it was amazing because I forgot about the logic of the condition, thank you very much for your help.

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