This is a seemingly simple problem, but I'm unable to make any progress.  I
have a large dataset, within it there is a column of location names, some of
which repeat; the adjacent column lists values for each location name.  I
need to sum the values which correspond to the same location name, returning
a matrix of the columns containing the location name and the corresponding
sum of values.  Thanks very much for any assistance.

	[[alternative HTML version deleted]]

