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#1
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Extracting Trendline Coefficients
I am trying to use Tushar Mehta's version of the trendline coefficient
extraction code, which I found he http://www.tushar-mehta.com/publish_...nalysis/16.htm My problem is that for some reason if I save the file and reopen it, Excel locks up and the TLcoef and TLeval formulas return "Err: No trendline found" What is wrong? Should I be changing something in the code? FYI - i'm using Excel 2002. |
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#2
Posted to microsoft.public.excel.misc,microsoft.public.excel.programming
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Extracting Trendline Coefficients
Why not use one of his LINEST formulas to get the coefficients?
best wishes -- Bernard V Liengme www.stfx.ca/people/bliengme remove caps from email wrote in message ups.com... I am trying to use Tushar Mehta's version of the trendline coefficient extraction code, which I found he http://www.tushar-mehta.com/publish_...nalysis/16.htm My problem is that for some reason if I save the file and reopen it, Excel locks up and the TLcoef and TLeval formulas return "Err: No trendline found" What is wrong? Should I be changing something in the code? FYI - i'm using Excel 2002. |
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#3
Posted to microsoft.public.excel.misc,microsoft.public.excel.programming
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Extracting Trendline Coefficients
The LINEST formulas in Excel 2002 and previous aren't as good as the
chart trendline for complex data. This is why I need to extract the trendline data. |
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#4
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Extracting Trendline Coefficients
Agreed, there are cases when LINEST gives incorrect results.
I would be interested in seeing such a data set. best wishes -- Bernard V Liengme www.stfx.ca/people/bliengme remove caps from email wrote in message oups.com... The LINEST formulas in Excel 2002 and previous aren't as good as the chart trendline for complex data. This is why I need to extract the trendline data. |
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#5
Posted to microsoft.public.excel.misc,microsoft.public.excel.programming
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Extracting Trendline Coefficients
I presume that you want to see if the OP has a new example; that would
interest me as well. Previously posted examples include http://groups.google.com/group/micro...9a2bb33e6cdbb8 a 6th degree polynomial fit that gets no correct figures in versions prior to 2003, but does better in 2003 on. http://groups.google.com/group/micro...8ea066b144d042 a 6th degree polynomial fit that gets no correct figures in any version of Excel http://groups.google.com/groups?thre...0a% 40phx.gbl an orthogonal trigonometric regression that worked prior to 2003, but gives erroneous zeros in 2003. Jerry "Bernard Liengme" wrote: Agreed, there are cases when LINEST gives incorrect results. I would be interested in seeing such a data set. best wishes -- Bernard V Liengme www.stfx.ca/people/bliengme remove caps from email wrote in message oups.com... The LINEST formulas in Excel 2002 and previous aren't as good as the chart trendline for complex data. This is why I need to extract the trendline data. |
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