how to get the column names of one matrix and assign nan to them

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Danielle Leblance
Danielle Leblance 2018 年 2 月 8 日
編集済み: Walter Roberson 2018 年 2 月 8 日
A=[A1,A2] ;
where A, A1,A2 are tables
I want to build matrix B such as:
B=[B1,A2];
but this time A2 is the same as A2 above but with nan values;
A2 is 300 columns and assigning the names column by column is a tedious thing to do .
Any help is appreciated
  4 件のコメント
Image Analyst
Image Analyst 2018 年 2 月 8 日
It's easier for us to try things and to help you if you attach your workbook and the code to read it in.
Bob Thompson
Bob Thompson 2018 年 2 月 8 日
If all you want is to have an array A2, that is the size of the original A2, but is a bunch of NaN, you should be able to say:
A3 = A2;
A3(:,:) = NaN;
That should get the size of A2 by copying, and then assign all members to be NaN.

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