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

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?

Answer 1

[James Tursa]

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.

[MAHMOUD ALZIOUD]

thank you man i will try it

[MAHMOUD ALZIOUD]

I have to files to be read, therefore K is 2, so I need to index the value of x and I wrote x{K} but it gave me this error after i did what you said. Cell contents assignment to a non-cell array object.

[James Tursa]

Can you show a short code snippet of what you are trying to do with the files?

[MAHMOUD ALZIOUD]

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.