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Excel Interp function

  • 18-04-2008 1:14pm
    #1
    Registered Users, Registered Users 2 Posts: 6,462 ✭✭✭


    Hi all

    I have two spreadsheets where I am using the interp function.

    =interp(X1:X10,Y1:Y10,Z) where X is an ascending list of dates, Y is a list of numbers and Z is a date. Problem is I get a result on one spreadsheet, but a #NAME? error on the other. Given they are both open on the same Excel all add-ins and options are set the same.

    When I click on the Function button to see more detail I get
    On the one that is working:
    Array Days = a series of dates (ie) giving a result)
    ArrayRates= a series of numbers
    Days = a result day
    And underneath it says ArrayDays in bold with a formula result

    On the one that is not working:
    Array Days = a series of dates (ie) giving a result)
    ArrayRates= a series of numbers
    Days = a result day
    And underneath it says Undefined and no formula result

    This is really wrecking my head. Is there any reason why there would be a problem with one and not the other given they are exactly the same inputs, format, settings, formula etc?

    Cheers


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