I want to replace some objects in one row or column.For example,
One colume: a,b,a,c,b,b,a,a,c.
I want to replace "a" with "1", "b" with "2", and "c" with "3".
Like this: 1,2,1,3,2,2,1,1,3.

How to do it? I donot know how to do it. Thanks.

	[[alternative HTML version deleted]]

