Thanks to my good relation to the NSA I was able to break into your computer and look at the data you are hiding from us. :)

It looks like you had a non-numeric variable in the data file!

> so how would I test for that?

stop reading the file as soon as you get NaN. Print the line number '$.' and dump line and column with Data::Dumper

BTW: did you use warnings?

Cheers Rolf

( addicted to the Perl Programming Language)

In reply to Re: Perl returns NaN after addition by LanX
in thread Perl returns NaN after addition by pimperator

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