[R] OT: 3d surfaces with transparency
deepayan.sarkar at gmail.com
Thu Dec 13 02:18:01 CET 2007
On 12/8/07, Ben Bolker <bolker at ufl.edu> wrote:
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> Deepayan Sarkar wrote:
> > On 12/8/07, Ben Bolker <bolker at ufl.edu> wrote:
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> >> I would be grateful if anyone had suggestions
> >> about software that could (1) create 3D surface
> >> plots, (2) handle transparency/alpha blending,
> >> (3) generate output in some vector graphics format
> >> that preserved the transparency. I could also
> >> live with a combination of two programs, one
> >> to generate the basic figure and another to
> >> modify the output surface to a transparent
> >> color (but preserving vector-ness).
> >> Any ideas???
> > You could consider wireframe from lattice, but this has many caveats.
> > For an example, see
> > http://dsarkar.fhcrc.org/lattice/book/figures.html?chapter=06;figure=06_18;theme=stdColor;code=right
> > For that matter, whats wrong with persp?
> > -Deepayan
> I hadn't thought about the fact that transparency is easier
> than it used to be (esp. with cairo device/PDF).
> OK, next question: is there an easier way than the following
> to create a 3D perspective plot with reference grids on some faces?
> I can pull the 3D grid code out of the rgl or scatterplot3d
> packages and reimplement it here, I guess ... another way to
> hack this might (?) be to play with tick lengths?
(I had been meaning to reply, but it slipped my mind.)
I can't see an easy way to do this for persp, but it's technically
possible (though not a one-liner) for cloud and wireframe. I can look
into it if you think it will help.
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