How to exclude more than 1 columns from a matrix?

I have a matrix like this: Data = [2,1,4,6,2;9,4,6,1,2;5,3,2,8,3;7,2,1,9,3;7,1,8,2,4]

     2     1     4     6     2
     9     4     6     1     2
     5     3     2     8     3
     7     2     1     9     3
     7     1     8     2     4

then i want to exclude the column 3 and 5 from my new matrix. So it will be like this:

     2     1     6
     9     4     1
     5     3     8
     7     2     9
     7     1     2

what to do? thanks before :')

Answer 1

[Richard]

simple way would be:

Data(:,3) = []; Data(:,5) = [];

[Jan]

This will fail: If the 3rd column is removed, there is no 5th column anymore!

Better: Data(:, [3, 5]) = [];

[Richard]

then you would remove one column first and then change the value accordingly, only a simple solution. Although I agree that Data(:, [3, 5]) = []; is better.

[Isti]

thanks Jan. actuallu when I used the solution above, there's a time the error about exceeded matrix is out.

so, solution from andrei below is same with you. and it works :)

Answer 2

[Andrei Bobrov]

Data = [2,1,4,6,2;9,4,6,1,2;5,3,2,8,3;7,2,1,9,3;7,1,8,2,4]
out = Data(:,[1 2 5])

[Isti]

i think we can't use it for the flexible size of Data. anyway thanks :)

[Andrei Bobrov]

out = Data(:,setdiff(1:size(Data,2),[3 5]))

[Andrei Bobrov]

Data(:,[3 5])=[]

[Isti]

thanks :)