read it, it helped me understand the double-dash as a unary operator, what it
does, and how it works. In practice, I came up with a problem though:

One gets a zero result if one wants to use a condition that re-uses the same
array:

sumproduct(--(X1:X65535="foo"),--(X1:X65535="oof"))

yields zero

sumproduct(--(or(X1:X65535="foo",X1:X65535="oof")))

just doesn't work

how would you do this, and still be able to use more than two conditionals?

Thanks.

-Jndrline



"JMB" wrote:

This is a good place to start:

http://xldynamic.com/source/xld.SUMPRODUCT.html


"Undrline" wrote:

k, works, saves me a bit of time, but my question is why? That's not at all
how the description of sumproduct sounds like it works. It sounds more like
(sum*sum) in the description. Perhaps it has to do with those double dashes?
What do the double-dashes mean?

Thx,
Jndrline

"Peo Sjoblom" wrote:

=SUMPRODUCT(--(X2:X500="foo"),--(Y2:Y500<100))

will count "foo" in A where Y is leas than 100

--

Regards,

Peo Sjoblom

http://nwexcelsolutions.com


"Undrline" wrote in message
...
So, here's something along the lines of what I'm trying to do:

for every row where column x says "foo" countif(y:y,"<100")

maybe it's something like countif(and(x:x="foo",y:y<100))
or maybe it's a whole other function.

I keep having to create extra go-between columns that concatenate two
columns, and then work from that:

x1&if(y1<100,"Yes","No")

drag it all the way down the side of my data

and then do something like:

countif(z:z,"fooYes")

It's a pain in the arse, I tell you whot. Please help me out.