sum (Matlab function)

Sum of array elements

Matlab/Scilab equivalent

Matlab Scilab

`sum`_
`sum`_

Particular cases

:M=sum(A) Scilab sum(A) returns the sum of all components of
A. So, if A is a vector, then Scilab and Matlab work in the same way. If A is a matrix, Scilab sum(A) gives the sum of all elements of A but Matlab returns the sum of each column. Finally, if A is a multidimensional array, Matlab works on the first non- singleton dimension of A what Scilab does not. So, to be sure to find a Scilab equivalent for Matlab call to sum it is better to precise dimension on which to work.
: :M=sum(A,dim) In Scilab dim=1 is equivalent to dim=”r” and
dim=2 is equivalent dim=”c”. In Matlab, dim can be greater then the number of dimension of A (in this case, M=A), in Scilab you will get an error message.

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Examples

Matlab Scilab

A = [1,2,3;4,5,6]
M = `sum`_(A)
M = [5,7,9]
M = `sum`_(A,1)
M = [5,7,9]
A = [1,2,3;4,5,6]
M = `sum`_(A)
M = 21
M = `sum`_(A,"r")
M = [5,7,9]

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