How to delete NaN from column vectors ?

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Thomas Wans
Thomas Wans 2021-10-31
回答： Walter Roberson 2021-10-31
Hi,
I have two coulmn vectors, as you can see some values of y column are NaN and I would like to get rid of them and make it like x1,y1 so when for example second element of y column is NaN, I want also to get rid of the second element in x column
x = [1;2;3;4;5;6;7]
y = [1;NaN,5,NaN,12,15,18]
x1 = [1;3;5;6;7;]
y1 = [1;5;12;15;18]

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回答（1 个）

Walter Roberson
Walter Roberson 2021-10-31
Ran in:
x = [1;2;3;4;5;6;7]
x = 7×1
1 2 3 4 5 6 7
y = [1;NaN;5;NaN;12;15;18]
y = 7×1
1 NaN 5 NaN 12 15 18
mask = ~isnan(y);
x1 = x(mask)
x1 = 5×1
1 3 5 6 7
y1 = y(mask)
y1 = 5×1
1 5 12 15 18

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