Return value based on previous month

[johnswaine]

Hi,
I have a table that is a1:a13 Jan - Dec, then below each month are values, I want to add a column for each row to show the value for the previous month from today, so if its October today then return each value for September, then I can create a chart based on the previous month when viewing.

Thanks in advance

[TABLE="width: 1254"]
<colgroup><col><col span="11"><col></colgroup><tbody>[TR]
[TD][TABLE="width: 500"]
<tbody>[TR]
[TD]Jan[/TD]
[TD]Feb[/TD]
[TD]Mar[/TD]
[TD]Apr[/TD]
[TD]May[/TD]
[TD]Jun[/TD]
[TD]Jul[/TD]
[TD]Aug[/TD]
[TD]Sep[/TD]
[TD]Oct[/TD]
[TD]Nov[/TD]
[TD]Dec[/TD]
[TD]Previous Month[/TD]
[/TR]
[TR]
[TD]1[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]10[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]10[/TD]
[/TR]
[TR]
[TD]1[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]10[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]10[/TD]
[/TR]
[TR]
[TD]1[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]10[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]10[/TD]
[/TR]
</tbody>[/TABLE]

[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD] 450[/TD]
[TD] 450[/TD]
[TD] 450[/TD]
[TD] 450[/TD]
[TD] 450[/TD]
[TD] -[/TD]
[/TR]
</tbody>[/TABLE]

 

[Momentman]

Am assuming that the headers are Text and not dates formatted as Text.

The below should work, but not for jan

Book1
	A	B	C	D	E	F	G	H	I	J	K	L	M
1	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Previous Month
2	1	1	1	1	1	1	1	1	10	1	1	1	10
3	1	1	1	1	1	1	1	1	10	1	1	1	10
4	1	1	1	1	1	1	1	1	10	1	1	1	10
Sheet11

Cell Formulas
Range	Formula
M2	=INDEX($A2:$L2,MATCH(TEXT(TODAY(),"mmm"),$A$1:$L$1,0)-1)

 

[AlanY]

try

Book1
	A	B	C	D	E	F	G	H	I	J	K	L	M
1	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Previous Month
2	1	1	1	1	1	1	1	1	10	1	1	1	10
3	1	1	1	1	1	1	1	1	10	1	1	1	10
4	1	1	1	1	1	1	1	1	10	1	1	1	10
Sheet2

Cell Formulas
Range	Formula
M2	=SUMPRODUCT((--(MONTH("1/"&$A$1:$L$1)=MONTH(TODAY())-1))*$A2:$L2)

 

[johnswaine]

Am assuming that the headers are Text and not dates formatted as Text.

The below should work, but not for jan

	A	B	C	D	E	F	G	H	I	J	K	L	M

<colgroup><col style="width: 25pxpx"><col><col><col><col><col><col><col><col><col><col><col><col><col></colgroup><thead>
</thead><tbody>
[TD="align: center"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] "]Jan[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] "]Feb[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] "]Mar[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] "]Apr[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] "]May[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] "]Jun[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] "]Jul[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] "]Aug[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] "]Sep[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] "]Oct[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] "]Nov[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] "]Dec[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] "]Previous Month[/TD]

[TD="align: center"]2[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]10[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]10[/TD]

[TD="align: center"]3[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
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[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]10[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
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[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]10[/TD]

[TD="align: center"]4[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
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[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]10[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]1[/TD]
[TD="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=FAFAFA]#FAFAFA[/URL] , align: right"]10[/TD]

</tbody>

Sheet11​

[TABLE="width: 85%"]
<tbody>[TR]
[TD]Worksheet Formulas[TABLE="width: 100%"]
<thead>[TR="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=DAE7F5]#DAE7F5[/URL] "]
[TH="width: 10"]Cell[/TH]
[TH="align: left"]Formula[/TH]
[/TR]
</thead><tbody>[TR]
[TH="width: 10, bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=DAE7F5]#DAE7F5[/URL] "]M2[/TH]
[TD="align: left"]=INDEX($A2:$L2,MATCH(TEXT(TODAY(),"mmm"),$A$1:$L$1,0)-1)[/TD]
[/TR]
</tbody>[/TABLE]
[/TD]
[/TR]
</tbody>[/TABLE]

Brilliant Thanks

 

[johnswaine]

Hi

also how can I return last months date in mmm format using "today" so it will automaticall show last month when I open the sheet?

 

[Momentman]

Hi

also how can I return last months date in mmm format using "today" so it will automaticall show last month when I open the sheet?

You can use

=TEXT(EOMONTH(TODAY(),-1),"mmm")