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Counting dated events

  1. 04-08-2009, 12:42 PM #1
    shellmachine05
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    Counting dated events

    I have data where each date represents a tornado in a state on that date. I have multiple states that have this type of data and need to get data for how many tornadoes occurred on a specific day in each state and then total tornadoes from all the states on that day preferably in a separate continuous column for easy transfer. I have a sample of the data I'll be using. In the end, I'll have more states extended to the right with a lot more dates. If anyone could help me, I need a template to go by that I could morph to what I need. I'm new to excel's macros and only have knowledge of FORTRAN programming. I know I'm asking for a lot but any help would be greatly appreciated.
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  2. 04-08-2009, 08:05 PM #2
    JBeaucaire
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    Re: Counting dated events

    There are several ways to approach this. The first, using your sample 3 states is to use an INDIRECT formula to find the states listed and date required to do a COUNT formula. It's a little convoluted.

    My suggestion is to NOT have separate columns. I've created a single set of data in columns OPQ and used another simpler formula SUMPRODUCT to count the number of entries that match the state and date selected.

    A little to the right of that, I show how you can create a PIVOT TABLE of the single data set to do the same thing as well. Change the date at the top and the PivotTable keeps changing the results and states listed.
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