I can't find any equivalent of the Excel Pivot Table or Open Office Data Table features. I'd like to sum up my data grouped by values in various columns.
For example, if I have
A B C
red left 2
red left 3
green left 4
green right 4
I want to be able to get
red green all
left 5 4 9
right 0 4 4
all 5 8 13