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How to have a trendline ignore 0 values

324 Views 3 Replies Latest reply: Feb 4, 2013 5:29 PM by Wayne Contello RSS
ironfromcast Calculating status...
Currently Being Moderated
Feb 4, 2013 1:35 PM

I have a scatterpoint graph that is connected to checkbox formulas. I want to be able to get a good trendline when I uncheck some of the boxes and those values go to 0. Currently, when I use the moving average it factors in the zero, but I just want the 0< values. I have also tried using a polynomial trendline, but this does not seem to provide a very dynamic line. Even after removing multiple values it bearly budges.

Is there a way to maybe use the Series Data (in this case the X data) to create such a formula? or maybe some other options?

 

Thanks.

  • Wayne Contello Level 6 Level 6 (12,650 points)
    Currently Being Moderated
    Feb 4, 2013 3:04 PM (in response to ironfromcast)

    make a column that copies values from another column when the checkbox is set otherwise it contains nothing:

     

    Screen Shot 2013-02-04 at 5.03.25 PM.png

     

    D2=IF(C2=TRUE, A2, "")

    E2=IF(C2=TRUE, B2, "")

     

    The chart takes its input like:

    Screen Shot 2013-02-04 at 5.04.32 PM.png

  • Wayne Contello Level 6 Level 6 (12,650 points)
    Currently Being Moderated
    Feb 4, 2013 5:29 PM (in response to ironfromcast)

    iron,

     

    in this case make a new table that contains only and X and Y column.  Make the cells in the X column refer to the actual X column and only take that value when the value is greater than 0... same for the Y.  Then make your chart refer to this new table.

    =if(<SRC CELL>>0, <SRC CELL>, "")

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