How do I add a column to a matrix?

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raj
raj 2012-1-23
编辑： Randy Souza 2014-2-13
I created a 30x30 matrix and now I want to delete the 1st column of data and add another column replacing the deleted column (which should not replace the same column), so I again get a matrix of size 30x30. I am successful in deleting the 1st column but cannot add another column.

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TAB
TAB 2012-1-23
Arr = rand(30,30);
%Delete first column
Arr(:,1) = [];
NewCol = rand(30,1);
%Add new column
Arr = [Arr NewCol];
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Image Analyst
Image Analyst 2012-1-23
Depending on *how* you want to do it, you could use interp2, imresize, padarray, etc.

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Walter Roberson
Walter Roberson 2012-1-23
If you know you are going to delete and add a new column in the same place, then just assign the new data overtop of the old data:
Arr(:,1) = NewData;

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