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# Re: [libreoffice-users] Calk - lookup cell in column

```At 08:36 13/09/2013 -0700, Graham Lovatt wrote:
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```Calk - lookup cell in column
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I imagine it's your spelling checker that thinks Calc is called Calk?

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I have a spreadsheet that records data for each day of the year. Vertically row by row I have the days of the year. I like my week to start on a Monday. So I have my year/days set to start on the first Monday of the year. So the actual first day of the year position/row is dynamic either on the Monday or above.
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Er, can you run that last sentence past me again, please?!

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```This all works ok
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Nice to hear it!

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However I then (for manipulating data by month) need to know the row/cell in which the first day of the year (or month) appears. How do I look up/find within a column the cell in which the first day of the month is - I assume that if I know how to do it for say January then I can do it for any month. I'm totally clueless as to how to do this.
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I fear so shall any one else be! One likely possibility is to use VLOOKUP(), which enables you to look for a match in the date column(s) and then retrieve data from the corresponding cells in neighbouring columns. But exactly how you do this depends on the form of your date data. Do you have a single column of proper dates (however formatted)? Or by "days of the year" do you mean that you have an integer from 1 to 365 or 366? Or do you have this data spread between more than one column - perhaps with the month in one column and the day in another? Or what?
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It might help if you list the date data for the first few days of the current year. This might explain both conundrums.
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```/Hopping that my explanation isn't to bamboozling/
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Gymnastics quite unnecessary, in fact.

I trust this helps.

Brian Barker

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