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I give up

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  • I give up

    Have a report based on a single tbl.
    Calc field called TM (total miles)

    works like this (using odometer and TM only) and the report
    is grouped on the Vehid Nbr.

    Vehicle 1

    Odometer Total Miles (TM)

    1000 0
    1200 200
    1300 100

    Vehicle 2

    800 -500
    900 100
    950 50

    The reason the first TM in Vehicle 1 is 0 is because the
    previous odometer is 0 or their is no odometer to perform
    the calc on. On Vehicle 2 TM is subtracting the 800 from
    the 1300 in the prior group, but the subsequent calculations
    are correct. If I run Vehicle 2 as a single report then it
    will run like Vehicle 1. If I run the report to include all
    vehicles then the first calc is off on each (except Vehicle #1).
    The calc field I have above is the only way I could get the
    thing to work. I can't get the previous function to work with a group, previous("odometer"),grp-"vehid). Is there any way to intialize a field in a report to set it to 0?
    I have been working on this longer than Edward Shultz is old
    and I am about to give up on it.(Ed is one of my favorite persons on the forum, he can come up some good questions).

  • #2
    RE: I give up


    Don't you want something like this:

    IF(Previous("VehID") "" VehID, 0, odometer - previous("odometer"))


    This will work only if the records are first sorted in order by VehID, and then by odometer readings.

    -- tom


    • #3
      RE: I give up

      I would have never guessed something like this would
      Thanks a million



      • #4
        RE: I give up

        Hi Jerry,

        You have joned the mutual admiration society. BTW, 76 is not that old, although it has a big effect on my golf game. I am still developing apps but no big ones anymore. I am presently developing a small one for a church which is "pro bono".