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Old August 31st 08, 07:39 PM posted to microsoft.public.excel.misc
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Default Converting daily data into weekly, monthly and yearly data

I am looking at share prices across a five-year period and have them on a
daily basis. If I want to graph them, however, there is little point in
charting five-years' worth of daily prices, as the graph loses clarity. I
would like, therefore, to be able to see long-term graphs in, say, weeks or
months worth of data. Is there a way that I can run a Macro, or some such
thing, would automatically convert daily data into longer time frames
according to my design?

Many thanks in advance.

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Old August 31st 08, 09:31 PM posted to microsoft.public.excel.misc
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First recorded activity by ExcelBanter: Jul 2006
Posts: 8,856
Default Converting daily data into weekly, monthly and yearly data

Well, you haven't exactly described what your design is. I presume you
would have a code for each share and maybe a description/name, and
also a date and a price, but you may have other fields as well.

How would you like to combine daily data into monthly? As an average?
If so, you can put 1st Jan 2008 in a cell (say M1) and 1st Feb 2008 in
the next cell (M2) and then fill these down so you get 1st of each
month thereafter. Then you could use this array* formula:

=AVERAGE(IF((MONTH(date_range)=MONTH(M1))*(YEAR(da te_range)=YEAR(M1))*(share_range="code")),price_ra nge))

where date_range, share_range and price_range are whatever you use in
your file, and code is the share you are interested in. Then you can
copy the formula down for as many dates as you have in column M.

*An array formula needs to be committed using the key combination of
Ctrl-Shift-Enter (CSE) rather than the usual <Enter. If you do this
correctly then Excel will wrap curly braces { } around the formula
when viewed in the formula bar - do not type these yourself. If you
subsequently edit/amend the formula you must use CSE again.

Hope this helps.

Pete



On Aug 31, 7:39*pm, CEGavinMcGrath
wrote:
I am looking at share prices across a five-year period and have them on a
daily basis. *If I want to graph them, however, there is little point in
charting five-years' worth of daily prices, as the graph loses clarity. *I
would like, therefore, to be able to see long-term graphs in, say, weeks or
months worth of data. *Is there a way that I can run a Macro, or some such
thing, would automatically convert daily data into longer time frames
according to my design?

Many thanks in advance.


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Old September 1st 08, 09:39 AM posted to microsoft.public.excel.misc
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First recorded activity by ExcelBanter: Aug 2008
Posts: 13
Default Converting daily data into weekly, monthly and yearly data

Pete,

Many, many thanks. I appreciate your help.

Regards, Gavin.

"Pete_UK" wrote:

Well, you haven't exactly described what your design is. I presume you
would have a code for each share and maybe a description/name, and
also a date and a price, but you may have other fields as well.

How would you like to combine daily data into monthly? As an average?
If so, you can put 1st Jan 2008 in a cell (say M1) and 1st Feb 2008 in
the next cell (M2) and then fill these down so you get 1st of each
month thereafter. Then you could use this array* formula:

=AVERAGE(IF((MONTH(date_range)=MONTH(M1))*(YEAR(da te_range)=YEAR(M1))*(share_range="code")),price_ra nge))

where date_range, share_range and price_range are whatever you use in
your file, and code is the share you are interested in. Then you can
copy the formula down for as many dates as you have in column M.

*An array formula needs to be committed using the key combination of
Ctrl-Shift-Enter (CSE) rather than the usual <Enter. If you do this
correctly then Excel will wrap curly braces { } around the formula
when viewed in the formula bar - do not type these yourself. If you
subsequently edit/amend the formula you must use CSE again.

Hope this helps.

Pete



On Aug 31, 7:39 pm, CEGavinMcGrath
wrote:
I am looking at share prices across a five-year period and have them on a
daily basis. If I want to graph them, however, there is little point in
charting five-years' worth of daily prices, as the graph loses clarity. I
would like, therefore, to be able to see long-term graphs in, say, weeks or
months worth of data. Is there a way that I can run a Macro, or some such
thing, would automatically convert daily data into longer time frames
according to my design?

Many thanks in advance.



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Old September 1st 08, 10:11 AM posted to microsoft.public.excel.misc
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First recorded activity by ExcelBanter: Jul 2006
Posts: 8,856
Default Converting daily data into weekly, monthly and yearly data

You're welcome, Gavin - thanks for feeding back.

Pete

On Sep 1, 9:39*am, CEGavinMcGrath
wrote:
Pete,

Many, many thanks. *I appreciate your help.

Regards, Gavin.



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