Strange behavior of sum

[Douglas Jiménez]

¡Greetings!

First at all you have to forgive my bad english. Thank you.

After a period of correct behavior 'sum' begins to make some strange things.
For example:

 octave:11> mu=rand(3,3)

mu =

 0.39068 0.20550 0.22666

0.12383 0.95872 0.38691

0.97295 0.18831 0.89087

octave:13> sum(mu(:,1))

octave:13>error: expecting integer index, found 0.390682


octave:17> a=[1 2 3]

a =

1 2 3

octave:19> sum(a)

ans =

0 0 0

octave:21> a=[1;2;3]

a =

1

2

3

octave:23> sum(a)

ans =

0 0 0


I work with Ubuntu 8.10.


Thanks in advance.


Douglas Jimenez
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