Calculate the number of consecutive dates

E

exe

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Feb 24, 2011
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13
Suppose the following:
<TABLE style="WIDTH: 125pt; BORDER-COLLAPSE: collapse" border=0 cellSpacing=0 cellPadding=0 width=167><COLGROUP><COL style="WIDTH: 54pt" width=72><COL style="WIDTH: 71pt; mso-width-source: userset; mso-width-alt: 3040" width=95><TBODY><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; BACKGROUND-COLOR: #dbe5f1; WIDTH: 54pt; HEIGHT: 13.5pt; BORDER-TOP: windowtext 0.5pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl70 height=18 width=72 align=left>name</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #dbe5f1; WIDTH: 71pt; BORDER-TOP: windowtext 0.5pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl70 width=95 align=left>date</TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl68 height=18 align=left>Peter</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl69 align=right>01/02/2010</TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl68 height=18 align=left>Peter</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl69 align=right>04/02/2010</TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl68 height=18 align=left>Peter</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl69 align=right>05/02/2010</TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl68 height=18 align=left>Jhon</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl69 align=right>01/02/2010</TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl68 height=18 align=left>Jhon</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl69 align=right>02/02/2010</TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl68 height=18 align=left>Jhon</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl69 align=right>03/02/2010</TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl68 height=18 align=left>Jhon</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl69 align=right>07/02/2010</TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl68 height=18 align=left>Phil</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl69 align=right>07/02/2010</TD></TR></TBODY></TABLE>

how to retreive the number of consecutive dates as below
note that the name could be a unique ID

<TABLE style="WIDTH: 125pt; BORDER-COLLAPSE: collapse" border=0 cellSpacing=0 cellPadding=0 width=167><COLGROUP><COL style="WIDTH: 54pt" width=72><COL style="WIDTH: 71pt; mso-width-source: userset; mso-width-alt: 3040" width=95><TBODY><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; BACKGROUND-COLOR: #dbe5f1; WIDTH: 54pt; HEIGHT: 13.5pt; BORDER-TOP: windowtext 0.5pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl69 height=18 width=72 align=left>Name</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: #dbe5f1; WIDTH: 71pt; BORDER-TOP: windowtext 0.5pt solid; BORDER-RIGHT: windowtext 0.5pt solid" class=xl69 width=95 align=left>Consecutive</TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl68 height=18 align=left>Peter</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl68 align=right>2</TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl68 height=18 align=left>Jhon</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl68 align=right>3</TD></TR><TR style="HEIGHT: 13.5pt" height=18><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; HEIGHT: 13.5pt; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl68 height=18 align=left>Phil</TD><TD style="BORDER-BOTTOM: windowtext 0.5pt solid; BORDER-LEFT: windowtext; BACKGROUND-COLOR: transparent; BORDER-TOP: windowtext; BORDER-RIGHT: windowtext 0.5pt solid" class=xl68 align=right>1</TD></TR></TBODY></TABLE>

thanks
gl
 
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DonkeyOte said:
Perhaps along the lines of:

Sheet4

*ABCDE
***
*Peter
*Jhon
*Phil
***
***
***
***
***

<colgroup><col style="font-weight:bold; width:30px; "><col style="width:47px;"><col style="width:87px;"><col style="width:72px;"><col style="width:72px;"><col style="width:72px;"></colgroup><tbody>
[TD="bgcolor: #cacaca, align: center"]1[/TD]
[TD="bgcolor: #a2bd90, align: left"]name[/TD]
[TD="bgcolor: #a2bd90, align: left"]date[/TD]

[TD="bgcolor: #cacaca, align: center"]2[/TD]
[TD="align: left"]Peter[/TD]
[TD="align: right"]01/02/2010[/TD]

[TD="align: right"]2[/TD]

[TD="bgcolor: #cacaca, align: center"]3[/TD]
[TD="align: left"]Peter[/TD]
[TD="align: right"]04/02/2010[/TD]

[TD="align: right"]3[/TD]

[TD="bgcolor: #cacaca, align: center"]4[/TD]
[TD="align: left"]Peter[/TD]
[TD="align: right"]05/02/2010[/TD]

[TD="align: right"]1[/TD]

[TD="bgcolor: #cacaca, align: center"]5[/TD]
[TD="align: left"]Jhon[/TD]
[TD="align: right"]01/02/2010[/TD]

[TD="bgcolor: #cacaca, align: center"]6[/TD]
[TD="align: left"]Jhon[/TD]
[TD="align: right"]02/02/2010[/TD]

[TD="bgcolor: #cacaca, align: center"]7[/TD]
[TD="align: left"]Jhon[/TD]
[TD="align: right"]03/02/2010[/TD]

[TD="bgcolor: #cacaca, align: center"]8[/TD]
[TD="align: left"]Jhon[/TD]
[TD="align: right"]07/02/2010[/TD]

[TD="bgcolor: #cacaca, align: center"]9[/TD]
[TD="align: left"]Phil[/TD]
[TD="align: right"]07/02/2010[/TD]

</tbody>

Spreadsheet Formulas
CellFormula
E2=SUMPRODUCT(($A$2:$A$9=$D2)*($B$3:$B$10-$B$2:$B$9=1))+(COUNTIF($A$2:$A$9,$D2)>0)

<tbody>
</tbody>

<tbody>
</tbody>


Excel tables to the web >> Excel Jeanie HTML 4

above assumes per sample that data is grouped by name and subsequently sorted by date
Click to expand...

Hi
This is great technique, so can we pull out the start and end date of series of consecutive date?
 
Upvote 0

Excel Facts

Quick Sum
Select a range of cells. The total appears in bottom right of Excel screen. Right-click total to add Max, Min, Count, Average.
exe said:
Finally solved thanks :)
Click to expand...

Can we pull out the corresponding dates with values here?
=MAX(FREQUENCY(IF($A$2:$A$28=$D2,IF($B$3:$B$29-$B$2:$B$28=1,ROW($B$2:$B$28))),IF(($A$2:$A$28<>$D2)+($B$3:$B$29-$B$2:$B$28<>1),ROW($B$2:$B$28))))+(COUNTIF($A$2:$A$28,$D2)>0) What wrong with this formula? It is not working here.
 
Upvote 0
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