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number of non nan observations

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Hi,
I have a matrix for which i need for each row to compute the number of non nan observations . such routine is occurring frequently in my program. I am wondering if it is possible to compute it without any loop. for example
0.81 0.10 NaN
0.91 NaN 0.97
0.91 NaN 0.97
NaN 0.55 0.96
0.91 0.96 0.49
NaN NaN NaN
is it possible to get [2;2;2;2;3;0] without running a loop?

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More Answers (1)

the cyclist
the cyclist on 31 Jul 2011
sum(not(isnan(x)),2)

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