Index 1 Variable by another

2015 4 12
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更新时间：2015 4 12
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Hi there!
I have 2 variables
if true
A = 1
2
NaN
4
end
B= 20
2
5
4
end
I want to remove the '5' from variable B by replacing it with a NaN (i.e. any NaN's in variable A result in a NaN in variable B
I understand this is a simple problem. I have researched but its been a long day Please help x

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 采纳的回答

Star Strider
Star Strider 2015-4-12

0 个投票

Use ‘logical indexing’:
B(isnan(A)) = NaN
produces:
B =
20
2
NaN
4

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