Quoting Duncan Murdoch <[email protected]>:
[email protected] wrote:
I have just started using the package 'rgl' to explore my data as a
3D scatterplot.
It's a great tool. But I would like to be able to save some graph
views and it appears the only format available is 'png' and it
doesn't look that nice. It is excellent to work with on screen and
explore/play, but when it comes to producing a good quality
graphic I'm a bit disappointed.
So the questions I have are:
1) is there a way to render the graph in the RGL device as a high
quality graphic?
You can use rgl.postscript for various other formats, but you may find
the bitmap output is better. In particular, shading is not always done
correctly.
Duncan Murdoch
Hi Duncan,
thanks for that.
Stupidly I hadn't realised only part of the manual had printed so I
was missing a lot of interesting options, not only this one but others
to animate views.
The type of plots I'm producing are similar to these:
library(rgl)
m<-matrix(rnorm(900),ncol=3)
plot3d(m,col=rainbow(6),type="s",size=0.8)
I tried rgl.postscript to save to pdf, as it's become my default
format when I want smooth plots using standard R graphics X11()
It looks smoother, but I get some "artifacts" in that the edges and
colouring of a number of spheres are rough, or incompletely coloured
(imagine a small scratch on a photograph)
using 'rgl.snapshot' to output a bitmap (png) with small spheres it
doesn't look that great. The default squares look fine 'though.
I guess I'll just play with these limitations. I was just wondering if
there was a simple way to get significantly better results.
But I'm not complaining! :) the 'rgl' package is pretty impressive!
Thank you.
Jose de las Heras
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