What's the simplest way to extend a numpy array in 2 dimensions?

Question

I have a 2d array that looks like this:

XX
xx

What\'s the most efficient way to add an extra row and column:

xxy
xxy
yyy
         


        

Answer 1

Answer to the first question:

Use numpy.append.

http://docs.scipy.org/doc/numpy/reference/generated/numpy.append.html#numpy.append

Answer to the second question:

Use numpy.delete

http://docs.scipy.org/doc/numpy/reference/generated/numpy.delete.html