How to sum part of a column?

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Karl
Karl on 29 Apr 2013
Answered: Birabhadra Rout on 25 Aug 2017
Hi. I am new to Matlab.
Does anybody know how I can calculate the column sum of row 1 and 2 in column 3 in the follwoing matrix (3+6)?
1 2 3
4 5 6
7 8 9

Accepted Answer

Kye Taylor
Kye Taylor on 29 Apr 2013
Edited: Kye Taylor on 29 Apr 2013
If your matrix is called A, then rows 1 and 2 in column 3 can be identified with the syntax
A( 1:2, 3 )
So sum it using the command
sum( A( 1:2, 3 ) )
  1 Comment
Karl
Karl on 29 Apr 2013
Thank you very much!

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More Answers (1)

Birabhadra Rout
Birabhadra Rout on 25 Aug 2017
if i have a matrix of vecor 1 2 1 3 1 4 2 2 2 3 2 4 and i want to add each number in 2nd column with having similar data in 1 st column and i want to save it as 1 9 2 10 then how to do it ?

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