Concatenate vector and a variable

Question

If I have a matrix

A = [0 1 0 1
     0 0 1 1]

and a variable B = 121.23, how can I concat both into a one variable.

I did

features_set = [A(:), B];

But, it gives an error CAT arguments dimensions are not consistent.

How can I add this variable B to the end of the vector A?

Jonas · Accepted Answer · 2011-04-28 10:52:00Z

2

A(:) returns an 8-by-1 array. The comma appends along the second dimension. Thus, your code fails.

If the output should be a 9-by-1 array, you should write

features_set = [A(:);B];

If the output should be a 1-by-9 array, you should write

features_set = [A(:)',B];

answered Apr 28, 2011 at 10:52

Jonas

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2 Comments

Or features_set = [A(:)' B]; of course, depending on whether you want a Nx1 or 1xN vector.

yeah.. I need 9-by-1 array. So, your first solution is working.