Count unique values in filtered list

[Mile]

Is it possible to count the number of unique values in a list that is filtered without using a helpcolumn? I guess I need to use the subtotals in some way.

 

[MartinL]

try this:
and name the range a10:a16 data

Sheet2

<TABLE style="PADDING-RIGHT: 2pt; PADDING-LEFT: 2pt; FONT-SIZE: 10pt; FONT-FAMILY: Arial,Arial; BACKGROUND-COLOR: #ffffff" cellSpacing=0 cellPadding=0 border=1><COLGROUP><COL style="FONT-WEIGHT: bold; WIDTH: 30px"><COL style="WIDTH: 87px"></COLGROUP><TBODY><TR style="FONT-WEIGHT: bold; FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center"><TD></TD><TD>A</TD></TR><TR style="HEIGHT: 17px"><TD style="FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center">10</TD><TD style="FONT-FAMILY: Verdana; TEXT-ALIGN: right">1000000006</TD></TR><TR style="HEIGHT: 17px"><TD style="FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center">11</TD><TD style="FONT-FAMILY: Verdana; TEXT-ALIGN: right">1000000006</TD></TR><TR style="HEIGHT: 17px"><TD style="FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center">12</TD><TD style="FONT-FAMILY: Verdana; TEXT-ALIGN: right">1000000006</TD></TR><TR style="HEIGHT: 17px"><TD style="FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center">13</TD><TD style="FONT-FAMILY: Verdana; TEXT-ALIGN: right">1000000007</TD></TR><TR style="HEIGHT: 17px"><TD style="FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center">14</TD><TD style="FONT-FAMILY: Verdana; TEXT-ALIGN: right">1000000008</TD></TR><TR style="HEIGHT: 17px"><TD style="FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center">15</TD><TD style="FONT-FAMILY: Verdana; TEXT-ALIGN: right">1000000008</TD></TR><TR style="HEIGHT: 17px"><TD style="FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center">16</TD><TD style="FONT-FAMILY: Verdana; TEXT-ALIGN: right">1000000008</TD></TR><TR style="HEIGHT: 17px"><TD style="FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center">17</TD><TD></TD></TR><TR style="HEIGHT: 17px"><TD style="FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center">18</TD><TD style="TEXT-ALIGN: right">3</TD></TR></TBODY></TABLE>
<TABLE style="FONT-SIZE: 10pt; BORDER-LEFT-COLOR: #00ff00; BORDER-BOTTOM-COLOR: #00ff00; COLOR: #000000; BORDER-TOP-STYLE: groove; BORDER-TOP-COLOR: #00ff00; FONT-FAMILY: Arial; BORDER-RIGHT-STYLE: groove; BORDER-LEFT-STYLE: groove; BACKGROUND-COLOR: #fffcf9; BORDER-RIGHT-COLOR: #00ff00; BORDER-BOTTOM-STYLE: groove"><TBODY><TR><TD>Spreadsheet Formulas</TD></TR><TR><TD><TABLE style="FONT-SIZE: 9pt; FONT-FAMILY: Arial" cellSpacing=0 cellPadding=2 border=1><TBODY><TR style="FONT-SIZE: 10pt; BACKGROUND-COLOR: #cacaca"><TD>Cell</TD><TD>Formula</TD></TR><TR><TD>A18</TD><TD>{=COUNTIF(data,data)}</TD></TR></TBODY></TABLE></TD></TR><TR><TD>Formula Array:
Produce enclosing { } by entering
formula with CTRL+SHIFT+ENTER!
</TD></TR></TBODY></TABLE>

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martin

 

[Domenic]

Try...

=SUM(IF(FREQUENCY(IF(SUBTOTAL(3,OFFSET(A2:A100,ROW(A2:A100)-ROW(A2),0,1)),MATCH("~"&A2:A100,A2:A100&"",0)),ROW(A2:A100)-ROW(A2)+1),1))

...confirmed with CONTROL+SHIFT+ENTER. Adjust the range, accordingly.

 

[Mile]

Fantastic!!

 

[deskjocky]

Try...

=SUM(IF(FREQUENCY(IF(SUBTOTAL(3,OFFSET(A2:A100,ROW(A2:A100)-ROW(A2),0,1)),MATCH("~"&A2:A100,A2:A100&"",0)),ROW(A2:A100)-ROW(A2)+1),1))

...confirmed with CONTROL+SHIFT+ENTER. Adjust the range, accordingly.

Domenic,
I was searching for a similar solution, and the one you posted worked perfectly for me.

My needs were to have a unique task count on colum C data starting at row 7, that is where my autofilters were set. So, as filters are set on other colums I am getting the correct unique value counts based on those filters.
Thank you!
Lloyd