The spread sheet that i am doing will ask the user to input several variables
which I will need to use to look up a value. Example,
The conductor needs to be Copper or Aluminum, There will be 1 or more
conductors and the Insulation temperature is 60C, 75C or 90C,
based On this criterial I need to get into the table that has that
information and pull out the value for that criteria. For example if someone
picked copper, 1, and 90C I will have one value for that, if they pick
another combination the result will be different.

Thanks


"Dave Peterson" wrote:

Saved from a previous post:

If you want exact matches for just two columns (and return a value from a
third), you could use:

=index(othersheet!$c$1:$c$100,
match(1,(a2=othersheet!$a$1:$a$100)
*(b2=othersheet!$b$1:$b$100),0))

(all in one cell)

This is an array formula. Hit ctrl-shift-enter instead of enter. If you do it
correctly, excel will wrap curly brackets {} around your formula. (don't type
them yourself.)

Adjust the range to match--but you can only use the whole column in xl2007.

This returns the value in othersheet column C when column A and B (of
othersheet) match A2 and B2 of the sheet with the formula.

And you can add more conditions by just adding more stuff to that product
portion of the formula:

=index(othersheet!$d$1:$d$100,
match(1,(a2=othersheet!$a$1:$a$100)
*(b2=othersheet!$b$1:$b$100)
*(c2=othersheet!$c$1:$c$100),0))

============
If there is only one match and you're bringing back a number (or 0 if there is
no match for all the criteria), you can use:

=sumproduct(--(othersheet!a1:a10=a1),
--(othersheet!b1:b10=b1),
(othersheet!c1:c10))

Adjust the ranges to match--but you can't use whole columns (except in xl2007).

=sumproduct() likes to work with numbers. The -- stuff changes trues and falses
to 1's and 0's.

Bob Phillips explains =sumproduct() in much more detail he
http://www.xldynamic.com/source/xld.SUMPRODUCT.html

And J.E. McGimpsey has some notes at:
http://mcgimpsey.com/excel/formulae/doubleneg.html

Ivan wrote:

I need to look Up one value, but Using multiple variables, so for example
if(a=x and b=y and c=z, use value from C1, I tried doing a nested loop but
there are too many combinations and Excel says there are too many loops, does
someone know an easier way to do this?

Thanks

--

Dave Peterson