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genobj
2012 Mar 02
0
plotting standard deviation of multivariate normal distribution (preferred in rgl package)
...Unfortunately
I couldn't figure out how to do that.
What I did so far is:
Assuming you have executed the code of the demo mentioned above you can
plot a 2d scatter plot of the data ("the shots on the target") via a simple
plot(x,y)
and add a contour plot via
par(new=TRUE)
contour(denobj, nlevels=8)
So the contour levels are about what I am looking for but...
1. how to make contour plot display exactly standard deviations as
contours and not arbitrary levels?
2. how to project the standard deviation contours on the 3d surface?
Probably there are (as always) lots of different so...