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Quick NAN Question HELP!

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Xiao Tang
Xiao Tang 2012-7-2
A = [1 2 3 1 nan];
If I input
AA~=1
It returns
ans =
0 1 1 0 1
However, If I want to find the replace the un-null elements with 1, returning a matrix like,
ans =
1 1 1 1 0
I tried A~= nan,
However, it returns
ans =
1 1 1 1 1
Any suggestions?

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采纳的回答

Thomas
Thomas 2012-7-2
use isnan
A = [1 2 3 1 nan];
~(isnan(A))
ans =
1 1 1 1 0

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