Hi,

I'm sure this is easy, but I'm stumped. I've got a couple of charts
comparing columns of data, the second chart being a normalized version
of the first one. Normalization is simply multiplying each cell, per
column, by a ratio of sums.

I want to change the ranges of all the sums, all at once, and I want to
do it while keeping my charts visible. I can do it with ctrl-enter,
with all the formulas selected, but then I have to scroll back to my
charts to see the effect.

So I want to construct the SUM() formula so that it refers to a range
specified indirectly, so I can just type in the row numbers and see my
charts change. I've searched the newsgroup without luck, and played
some with INDIRECT() and ADDRESS()... and I'm just not getting it.
Help!

To make it specific:
my data are in B2:CS1491
my SUM formulas are in B1492:CS1492, no relation to Columbus.
I want to place, say, 1 in A1 and 1492 in B1 (from where I can see my
charts), and watch the charts update. Change B1 to 600 and see it
change. Clear?

Thanks,
--Carl