Need a function

SB · Mar 26th, 2002, 01:37 PM

Can anyone help me come up with a function that will:

Scan a list of names and count how many of the names have a corresponding "yes" value beside them. However, if the name is listed twice, the function should ignore the redundant listings. Therefore only counting a recurring name the first time.

The data would be in two columns, say A1:B10.
With names in Coulmn A and "Yes" or "No" in column B.

Tom Schreiner · Mar 26th, 2002, 01:58 PM

Hi SB
Same message I sent to the last guy.
Someone will probably give you a nice formula. If not this would be easy to accomplish with VBA.
I'll post a small macro if no one helps you out.
Tom

Dave Patton · Mar 26th, 2002, 02:02 PM

Approaches include the following:

1. Use a Pivot Table and hide the Grand total.

2. Use =COUNTIF($A$2:A2,A2) copy down
recap the count of column
and "Yes" criteria with Sumproduct

3. Concatenate 2 columns and evaluate the number that are unique

- =A2&|&B2
number unique with Array Formula
=SUM(1/COUNTIF(rA,rA))

rA is name of range of concatenated info
Enter the Array formula with Ctrl-Shift-Enter

[ This Message was edited by: Dave Patton on 2002-03-26 13:41 ]

SB · Mar 26th, 2002, 02:34 PM

Thanks for the formula but I am having trouble understanding it. I can't get it to work.

Dave Patton · Mar 26th, 2002, 02:43 PM

Which approach did You decide to try?

There are pros and cons to each solution.

Dave Patton · Mar 26th, 2002, 04:07 PM

You can use Data Filter Advanced to
give you a list thaat meet your criteria.

Use Counta to count the names in the list.

It is Your choice what approach you want to use.

Russell Hauf · Mar 26th, 2002, 05:02 PM

Quote:

On 2002-03-26 13:02, Dave Patton wrote:
Approaches include the following:

1. Use a Pivot Table and hide the Grand total.

2. Use =COUNTIF($A$2:A2,A2) copy down
recap the count of column
and "Yes" criteria with Sumproduct

3. Concatenate 2 columns and evaluate the number that are unique

- =A2&|&B2
number unique with Array Formula
=SUM(1/COUNTIF(rA,rA))

rA is name of range of concatenated info
Enter the Array formula with Ctrl-Shift-Enter

[ This Message was edited by: Dave Patton on 2002-03-26 13:41 ]

Sumproduct won't work with names. I suggest the pivot table approach.

-rh

Dave Patton · Mar 26th, 2002, 05:30 PM

Russell

You stated
" Sumproduct won't work with names. "

Would you clarify?

Aladin Akyurek · Mar 26th, 2002, 05:41 PM

My 2 cents:

All of the suggestions by Dave Patton, including Adv Filter combined with COUNTA would work.

Another approach that would not require an additional column that concatenates the data from 2 columns is what follows.

lets consider the sample in A4:B9.

{"Name","Y/N";
"ali","yes";
"jon","no";
"jon","yes";
"dan","yes";
"ali","yes"}

Try:

=SUM(IF(FREQUENCY(MATCH(A5:A9&B5:B9,A5:A9&B5:B9,0),MATCH(A5:A9&B5:B9,A5:A9&B5:B9,0))=1,1))

normally entered.

Aladin

Dave Patton · Mar 26th, 2002, 08:19 PM

Thanks very much Aladin.

That is quite the formula.

I was close but I could not get all the pieces to connect.

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Mar 26th, 2002, 01:37 PM	#1
SB New Member Join Date: Mar 2002 Posts: 18	Can anyone help me come up with a function that will: Scan a list of names and count how many of the names have a corresponding "yes" value beside them. However, if the name is listed twice, the function should ignore the redundant listings. Therefore only counting a recurring name the first time. The data would be in two columns, say A1:B10. With names in Coulmn A and "Yes" or "No" in column B.

Mar 26th, 2002, 01:58 PM	#2
Tom Schreiner Board Regular Join Date: Mar 2002 Location: Cincinnati, Ohio, USA Posts: 6,824	Hi SB Same message I sent to the last guy. Someone will probably give you a nice formula. If not this would be easy to accomplish with VBA. I'll post a small macro if no one helps you out. Tom

Mar 26th, 2002, 02:02 PM	#3
Dave Patton Board Regular Join Date: Feb 2002 Location: Calgary, Alberta Canada Posts: 2,065	Approaches include the following: 1. Use a Pivot Table and hide the Grand total. 2. Use =COUNTIF($A$2:A2,A2) copy down recap the count of column and "Yes" criteria with Sumproduct 3. Concatenate 2 columns and evaluate the number that are unique - =A2&\|&B2 number unique with Array Formula =SUM(1/COUNTIF(rA,rA)) rA is name of range of concatenated info Enter the Array formula with Ctrl-Shift-Enter [ This Message was edited by: Dave Patton on 2002-03-26 13:41 ]

Mar 26th, 2002, 02:34 PM	#4
SB New Member Join Date: Mar 2002 Posts: 18	Thanks for the formula but I am having trouble understanding it. I can't get it to work.

Mar 26th, 2002, 02:43 PM	#5
Dave Patton Board Regular Join Date: Feb 2002 Location: Calgary, Alberta Canada Posts: 2,065	Which approach did You decide to try? There are pros and cons to each solution.

Mar 26th, 2002, 04:07 PM	#6
Dave Patton Board Regular Join Date: Feb 2002 Location: Calgary, Alberta Canada Posts: 2,065	You can use Data Filter Advanced to give you a list thaat meet your criteria. Use Counta to count the names in the list. It is Your choice what approach you want to use.

Mar 26th, 2002, 05:30 PM	#8
Dave Patton Board Regular Join Date: Feb 2002 Location: Calgary, Alberta Canada Posts: 2,065	Russell You stated " Sumproduct won't work with names. " Would you clarify?

Mar 26th, 2002, 05:41 PM	#9
Aladin Akyurek MrExcel MVP Join Date: Feb 2002 Location: The Hague Posts: 50,317	My 2 cents: All of the suggestions by Dave Patton, including Adv Filter combined with COUNTA would work. Another approach that would not require an additional column that concatenates the data from 2 columns is what follows. lets consider the sample in A4:B9. {"Name","Y/N"; "ali","yes"; "jon","no"; "jon","yes"; "dan","yes"; "ali","yes"} Try: =SUM(IF(FREQUENCY(MATCH(A5:A9&B5:B9,A5:A9&B5:B9,0),MATCH(A5:A9&B5:B9,A5:A9&B5:B9,0))=1,1)) normally entered. Aladin

Mar 26th, 2002, 08:19 PM	#10
Dave Patton Board Regular Join Date: Feb 2002 Location: Calgary, Alberta Canada Posts: 2,065	Thanks very much Aladin. That is quite the formula. I was close but I could not get all the pieces to connect.