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Thread: Solved: Excel Graph w/cubic function

  1. 03-15-2009, 02:20 PM #1
    stanl
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    Solved: Excel Graph w/cubic function

    The attached image is an Excel chart I created (for my daughter's research data) based on 4 time series (plotted as points, no need to identify as separate entities) the blue curve is something I drew in, but it represents a cubic function (as created in SPSS with the same data). She prefers the appearance of Excel to SPSS but would like the blue line plotted not drawn. The cubic function equation is

    53.8538929166713 + 46.64544988975923 * x +
    -10.05852960664259 * x*x + 0.5421132687450991 * x*x*x


    Can anyone advise on how I might introduce this to the chart I can upload the worksheet if needed. Stan
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  2. 03-15-2009, 03:35 PM #2
    mdmackillop
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    Hi Stan,
    Something like this?
    Please post the data if you need more
    Regards
    Malcolm
    MVP (Excel 2008-2010)

    Post a workbook with sample data and layout if you want a quicker solution.

    To help indent your macros try Smart Indent

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  3. 03-15-2009, 04:34 PM #3
    stanl
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    You got me. I can see the basic method, but it is like leading a horse to water. Here is the data and graph so far, with the blue I drew in erased. I really appreciate your looking at it. Stan
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  4. 03-15-2009, 04:59 PM #4
    stanl
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    OMG - It was that easy... Got it, ignore my last post... Thanx again. Stan
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  5. 03-15-2009, 05:04 PM #5
    mdmackillop
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    You're testing my very limited charting skills, but this is what I got
    MVP (Excel 2008-2010)

    Post a workbook with sample data and layout if you want a quicker solution.

    To help indent your macros try Smart Indent

    Please remember to mark threads 'Solved'
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