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Aggregating by time

  1. #1
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    Aggregating by time

    I have a series of temperature readings taken at 15 minute intervals, but I need to aggregate these to the average over an hour so I can merge them with another data stream.

    I've tried splitting the time into its date and time components and then building a pivot table, and it's easy enough to get aggregations by day that way. But how to get it by hour?

    Thanks.

  2. #2
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    Re: Aggregating by time

    To best describe or illustrate your problem you would be better off attaching a dummy workbook, the workbook should contain the same structure and some dummy data of the same type as the type you have in your real workbook - so, if a cell contains numbers & letters in this format abc-123 then that should be reflected in the dummy workbook. Don't upload a picture when you have a workbook question. None of us is inclined to recreate your data. Upload the workbook and manually add an 'after' situation so that we can see what you expect. In addition clearly explain how you get the results..
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  3. #3
    Forum Expert teylyn's Avatar
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    Re: Aggregating by time

    Hello,

    Pivot tables don't group very well with time values. You need to add a column to your source data that calculates the hour. Then pull that column into the pivot table.

    cheers,

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