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scatterplot3d bug??

5 messages · David Winsemius, Uwe Ligges, Vivek Ayer

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Hey guys,

Not sure if I encountered a bug with the scatterplot3d function.
Here's the calls I made:

s3d1 <- scatterplot3d(TotLogDisttenp,TotDifftenp,TotMeasuredRSLtenp,pch=16,highlight.3d=TRUE,angle=40,type="h",main="MRSL
~ LogDist + Diff");
s3d1$plane3d(fitols);
s3d1 <- scatterplot3d(TotLogDisttenp,TotDifftenp,TotMeasuredRSLtenp,pch=16,highlight.3d=TRUE,angle=130,type="h",main="MRSL
~ LogDist + Diff");
s3d1$plane3d(fitols);
s3d1 <- scatterplot3d(TotLogDisttenp,TotDifftenp,TotMeasuredRSLtenp,pch=16,highlight.3d=TRUE,angle=210,type="h",main="MRSL
~ LogDist + Diff");
s3d1$plane3d(fitols);
s3d1 <- scatterplot3d(TotLogDisttenp,TotDifftenp,TotMeasuredRSLtenp,pch=16,highlight.3d=TRUE,angle=310,type="h",main="MRSL
~ LogDist + Diff");
s3d1$plane3d(fitols);

Essentially four plots showing the data from different angles. This
includes the fit plane. The first two graphs make sense, but for the
latter two, the fit plane is not making sense.

Take a look at the attached png.

Is it a bug?

Thanks,
Vivek
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Not sure you can call it a bug when the help page says for angles in  
range (180, 360) that some support functions may "not work properly".
On Aug 3, 2009, at 2:12 PM, Vivek Ayer wrote:

            
I suspect s3d1$plane3d(fitols)  uses one of the futzed functions.
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
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Will take a look when back from holidays in 2 weeks.

Uwe
David Winsemius wrote:
20 days later
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I finally found some time to look at it:

Yes, it does not work properly for angles > 180 degrees. Will try to 
find a fix and make a new release soon.

Best wishes,
Uwe Ligges
Vivek Ayer wrote:
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Great! Thanks again!

Vivek

2009/8/25 Uwe Ligges <ligges at statistik.tu-dortmund.de>: