# how i count the values.

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glory pachnanda on 20 Mar 2013
suppose, a=[1,2,3,4,5,6,7,8], the size of this matrix 1 rows and 8 columns and total values are 8, how can we count these total values on MATLAB. the result should be show like as 8 means if a has total values 1000 then the result should be 1000.

Image Analyst on 20 Mar 2013
What exactly do you mean by count? Do you mean the sum (total) of all elements, or the number of elements? Do you mean a count of the number of elements? Like
numberOfColumns = size(a, 2);
numberOfColumns = length(a);
numberOfColumns = numel(a);
All of the above will give numberOfColumns = 8 for an 8 element row vector, and numberOfColumns = 1000 for a 1000 element row vector.

Jason Ross on 20 Mar 2013
Edited: Jason Ross on 20 Mar 2013
Are you just looking for the sum? In that case, use "sum"
>> a=[1,2,3,4,5,6,7,8]
a =
1 2 3 4 5 6 7 8
>> sum(a)
ans =
36

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