Error message Undefined variable isnan

2012 10 18
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Hi,
I am new to using mathlab so apologies if this is obvious.
for i=1:2705
borntime(i)=min(find(~isnan(final_n(i),:)))
end
I am getting an error message saying undefined variable isnan.
If anyone could help me it would be great.
Final_n is a matrix of 2705x1209.
Thanks.

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 采纳的回答

Azzi Abdelmalek
Azzi Abdelmalek 2012-10-18
编辑：Azzi Abdelmalek 2012-10-18

0 个投票

final_n=rand(2705,5);
for i=1:2705
borntime(i)=min(find(~isnan(final_n(i,:))));
end
the error was in
~isnan(final_n(i),:)

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Ursula
Ursula 2012-10-18
Thanks a million for that. What exactly does the
final_n=rand(2705,5);
line do?
Azzi Abdelmalek
Azzi Abdelmalek 2012-10-18
it's just an example to test your code
Ursula
Ursula 2012-10-18
Thats perfect thanks!

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更多回答（1 个）

Sean de Wolski
Sean de Wolski 2012-10-18

0 个投票

What is the output from:
which -all isnan
If nothing shows up:
rehash toolboxcache

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