How to delete NaN from column vectors ?

Question

Thomas Wans 2021-10-31

1
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1575823-how-to-delete-nan-from-column-vectors

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]

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Walter Roberson 2021-10-31

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1575823-how-to-delete-nan-from-column-vectors#answer_820713

在 MATLAB Online 中打开

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