Summing elements of an array

Asked by Gian Carpinelli on 13 Apr 2018

Latest activity Commented on by Stephen Cobeldick on 13 Apr 2018

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Hi, so for example I have P such that: P =

3×1 cell array
    [1]
    [2]
    [3].

The matrix P can be a n x 1 cell array, where n is any positive integer, and can only hold numbers. Ive tried to sum these numbers using sum(P) but keep getting the error ' Undefined function 'sum' for input arguments of type 'cell'. '. Any ideas on how I could do this? thank-you.

1 Comment

Stephen Cobeldick on 13 Apr 2018

@Gian Carpinelli: why are you storing numeric data in a cell array? It would be simpler to store it in a numeric array.

2 Answers

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Answer by KL on 13 Apr 2018

Edited by KL on 13 Apr 2018

sum([P{:}])

But why would you store it in cell array? If they are all numeric, better use a numeric array.

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Answer by M on 13 Apr 2018

You can use either

sum(cell2mat(P))

sum([P{:}])

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