MATLAB: How can i add all column values in a pattern and save simultaneously

matrix arraymatrix manipulation

I have a matrix as
Px=[ Columns 1 through 9
      0.0574    0.0574    0.0574    0.0015    0.0112    0.0112    0.0574    0.0112    0.0574
    Column 10
      0.0112]
Now i want to add columns 1 to 10 and save first then add column 2 to 10 and goes on
PX=[Px(1)...+Px(10) Px(2)...+Px(10) Px(3)..+Px(10) Px(4)..+Px(10) Px(5)..+Px(10) Px(6)..+Px(10) Px(7)..+Px(10) Px(8)..+Px(10) Px(9)..+Px(10) Px(10)]
Please help me…. please please….

Best Answer

Px=fliplr(cumsum(fliplr(C)));
PS. In future, don't whine, it isn't becoming... :)
PPS
You can avoid one function call by writing the inner index reversal explicitly--I've no idea if would make any performance difference for large vector sizes or not.
Px=fliplr(cumsum(C(end:-1:1)));
Matlab doesn't have postfix indexing expressions so can't avoid the outer call.
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