Cornelius, from the sound of it you appear to be doing the kind of analysis
that pivot tables were designed for. Have you looked at using those for
your data at all?

http://peltiertech.com/Excel/Pivots/pivotstart.htm

--
Regards
Ken....................... Microsoft MVP - Excel
Sys Spec - Win XP Pro / XL 97/00/02/03

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It's easier to beg forgiveness than ask permission :-)
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"Cornelius" wrote in message
...

Hi all. I've been developing a sheet that measures numerous aspects of my
business and allows any set of parameters to be displayed at a single
time.
For instance, one could look at sales to New York on a weekly basis in
2004
through a particular channel or customer, then switch these parameters
using
validated cells to Chicago quarterly 2004 all business.

I've created all the sets of vlookups for a SUMPRODUCT to look at, each
corresponding to a large data grid that has the appropriate categories
(dollars or pounds, weeks, years, customer category, region, etc.). Here
is
the formula:


=SUMPRODUCT(($C22=Data!$M$5:$FN$5)*($O$82=Data!$J$ 7:$J$865)*($A22=Data!$E$7:
$E$865)*($B22=Data!$F$7:$F$865)*($E$78:$Q$78=Data! $K$7:$K$865)*($N$116:$Z$11
6=Data!$M$4:$FN$4)*(NOT($D$132:$AD$132=Data!$B$7:$ B$865))*(NOT($F$52:$H$52=D
ata!$D$7:$D$865))*(NOT($C$88:$H$88=Data!$C$7:$C$86 5))*Data!$M$7:$FN$865)

where Data!M7:FN865 is the data grid. The NOT functions eliminate certain
areas that shouldn't be calculated (i.e. looking at New York you ignore
Chicago, LA and Miami, but looking at all business you ignore nothing).

This formula returns N/A. If I reduce the ranges to be used or ignored
(make $C$88:$H$88 just $C$88) I get a value. How do I overcome this? I
have
used ranges like this in the past succesfully, but never so many.