Counting data by week number

Hi,

I have a formula set up to count the number of e-mails answered by category
for each month. The formula being used is:

=SUMPRODUCT(--(MONTH(Pivot!$E$8:$E$1589)=MONTH($B$1)),--(Pivot!$E$8:$E$1589<>"")*(Pivot!$J$8:$J$1589=A24))

Where column E contains the date the e-mail was answered; Cell B1 contains
the date I'm checking and column J contains the category assigned to the
e-mail and cell A24 is the category I'm trying to get the end result for.

I'd like to do the same thing but calculate it by week. I was feeling
rather confident and just substituted "WEEKNUM" for "MONTH" to have:

=SUMPRODUCT(--(WEEKNUM(Pivot!$E$8:$E$1589)=WEEKNUM($B$1)),--(Pivot!$E$8:$E$1589<>"")*(Pivot!$J$8:$J$1589=A24))

But I get a result of: #VALUE!

Can somebody offer advice on where I've gone wrong?


Thanks in advance,
Scott

WEEKNUM won't work with arrays.

Biff

"Scopar" <[email protected]> wrote in message
news:[email protected]...
> Hi,
>
> I have a formula set up to count the number of e-mails answered by
> category
> for each month. The formula being used is:
>
> =SUMPRODUCT(--(MONTH(Pivot!$E$8:$E$1589)=MONTH($B$1)),--(Pivot!$E$8:$E$1589<>"")*(Pivot!$J$8:$J$1589=A24))
>
> Where column E contains the date the e-mail was answered; Cell B1 contains
> the date I'm checking and column J contains the category assigned to the
> e-mail and cell A24 is the category I'm trying to get the end result for.
>
> I'd like to do the same thing but calculate it by week. I was feeling
> rather confident and just substituted "WEEKNUM" for "MONTH" to have:
>
> =SUMPRODUCT(--(WEEKNUM(Pivot!$E$8:$E$1589)=WEEKNUM($B$1)),--(Pivot!$E$8:$E$1589<>"")*(Pivot!$J$8:$J$1589=A24))
>
> But I get a result of: #VALUE!
>
> Can somebody offer advice on where I've gone wrong?
>
>
> Thanks in advance,
> Scott

Try this

=SUMPRODUCT(--(1+INT((Pivot!$E$8:$E$1589-(DATE(YEAR(Pivot!$E$8:$E$1589),1,2)
-WEEKDAY(DATE(YEAR(Pivot!$E$8:$E$1589),1,1))))/7)=WEEKNUM($B$1)),
--(Pivot!$E$8:$E$1589<>""),--(Pivot!$J$8:$J$1589=A24))

--
HTH

Bob Phillips

(replace somewhere in email address with gmail if mailing direct)

"Scopar" <[email protected]> wrote in message
news:[email protected]...
> Hi,
>
> I have a formula set up to count the number of e-mails answered by
category
> for each month. The formula being used is:
>
>
=SUMPRODUCT(--(MONTH(Pivot!$E$8:$E$1589)=MONTH($B$1)),--(Pivot!$E$8:$E$1589<
>"")*(Pivot!$J$8:$J$1589=A24))
>
> Where column E contains the date the e-mail was answered; Cell B1 contains
> the date I'm checking and column J contains the category assigned to the
> e-mail and cell A24 is the category I'm trying to get the end result for.
>
> I'd like to do the same thing but calculate it by week. I was feeling
> rather confident and just substituted "WEEKNUM" for "MONTH" to have:
>
>
=SUMPRODUCT(--(WEEKNUM(Pivot!$E$8:$E$1589)=WEEKNUM($B$1)),--(Pivot!$E$8:$E$1
589<>"")*(Pivot!$J$8:$J$1589=A24))
>
> But I get a result of: #VALUE!
>
> Can somebody offer advice on where I've gone wrong?
>
>
> Thanks in advance,
> Scott