error when sum a vector

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hello, I want to sum a vector but I have this error
probabilite= [0.165575031104594 0.158621930989492 0.160414724735035 0.159513234647443 0.159438658281726];
somme=sum( probabilite)
error :
Subscript indices must either be real positive integers or logicals.
Error in Untitled (line 6)
somme=sum( probabilite)
please help me, how can correct this error?

Accepted Answer

Purushottama Rao
Purushottama Rao on 6 May 2015
It did not gave any error in my pc.
>> probabilite= [0.165575031104594 0.158621930989492 0.160414724735035 0.159513234647443 0.159438658281726];
somme=sum( probabilite)
somme =
0.8036
  4 Comments
Jos (10584)
Jos (10584) on 6 May 2015
Good luck closing and re-opening matlab all the time! :-)

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More Answers (1)

Jos (10584)
Jos (10584) on 6 May 2015
Edited: Jos (10584) on 6 May 2015
Most likely you have declared a variable called sum, which now clashes with the function sum
In your case, you then want to index the 0.165575031104594th and other values of the variable array sum, which is nonsense, of course, causing MatLab to throw an error.
What does
whos ('sum')
return?
However, these bugs can be nasty and not so easy to spot:
sum = [1 2 3]
p = [2 3]
answer = sum(p)
Lesson to be learned : do not name your variable after a function, but be more descriptive, using names like sumA or sumData.
(btw the solution is to clear the variable sum, which shouldn't have been created by you in the first place)

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