unique rows with nan

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joseph Frank
joseph Frank 2011 年 7 月 1 日
If i have two identical rows
for example: A=[ 1 2 3 NaN;1 2 3 NaN];
using
unique(A,'rows') is not eliminating the duplication. is there any other method to do so?

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Matt Fig
Matt Fig 2011 年 7 月 1 日
This is because nan~=nan is always true.
So one approach is to replace nan with some other value.
A(isnan(A)) = inf;
B = unique(A,'rows');
B(isinf(B)) = nan
If you have infs in your array as well as nans, pick some other value.

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