Mark Kimpel wrote:
Thanks for the pointers. I think the package is great, just want to
use it to its full potential without driving the list crazy with
questions. Below is my output to help and sessionInfo(). I don't see
the scaling functions, although I now see that they can be retrieved
with ?matrices. You guys are the experts as to what should go where,
but for someone unfamiliar with how rgl works, having them print out
with help(package = "rgl") would make some of these functions more
obvious to the newbie. Mark
The issue here is that several of those are documented on the same page,
and that index lists the names of help pages, not all of the aliases
that point there. The index in the HTML help version (or the CHM help
in Windows) repeats each alias, so you'll see things like
scale3d Work with homogeneous coordinates
scaleMatrix Work with homogeneous coordinates
as well as the entry for matrices as below. I can see arguments for
both: repetition is bad, full coverage is good. The index in the pdf
document is another approach: it lists all the aliases, and tells you
which topic documents them.
All of this is common to all R packages; rgl isn't doing anything
special to produce these lists.
Duncan Murdoch
aspect3d Set the aspect ratios of the current plot
axes3d Draw boxes, axes and other text outside the
data
ellipse3d Make an ellipsoid
grid3d Add a grid to a 3D plot
matrices Work with homogeneous coordinates
par3d Set or Query RGL Parameters
par3dinterp Interpolator for par3d parameters
persp3d Surface plots
play3d Play animation of rgl scene
plot3d 3D Scatterplot
points3d add primitive set shape
qmesh3d 3D Quadrangle Mesh objects
r3d Generic 3D interface
rgl-package 3D visualization device system
rgl.bbox Set up Bounding Box decoration
rgl.bg Set up Background
rgl.bringtotop Assign focus to an RGL window
rgl.clear scene management
rgl.light add light source
rgl.material Generic Appearance setup
rgl.postscript export screenshot
rgl.primitive add primitive set shape
rgl.setMouseCallbacks User callbacks on mouse events
rgl.snapshot export screenshot
rgl.spheres add sphere set shape
rgl.surface add height-field surface shape
rgl.texts add text
rgl.user2window Convert between rgl user and window coordinates
rgl.viewpoint Set up viewpoint
select3d Select a rectangle in an RGL scene
spin3d Create a function to spin a scene at a fixed
rate
sprites3d add sprite set shape
subdivision3d generic subdivision surface method
surface3d add height-field surface shape
sessionInfo()
R version 2.7.1 (2008-06-23)
i686-pc-linux-gnu
locale:
LC_CTYPE=en_US.UTF-8;LC_NUMERIC=C;LC_TIME=en_US.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=C;LC_MESSAGES=en_US.UTF-8;LC_PAPER=en_US.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_US.UTF-8;LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] rgl_0.79 graph_1.18.1
loaded via a namespace (and not attached):
[1] cluster_1.11.11 tools_2.7.1
On Wed, Jun 25, 2008 at 5:25 PM, Duncan Murdoch <[EMAIL PROTECTED]> wrote:
Mark Kimpel wrote:
Ben and Duncan,
Thanks for your helpful suggestions. I"m having some difficulty
navigating this really good package using my normal learning
techniques. When I do 'help(package = "rgl") it seems only a very
small subset of functions available show up.
I think the full list shows up there, if you're using a current version.
What specific function is missing?
Perusing the rgl.pdf
downloaded from CRAN demonstrates the same lack of documentation.
All of the functions intended for users are documented, and they show up in
rgl.pdf.
There is no vignette. In addition, I have found at least one other
package with 3d functions (emdbook::curve3d()).
A vignette would be nice, but there isn't one. Our paper from useR 2007 is
the most recent reference (see
http://www.r-project.org/conferences/useR-2007/program/presentations/murdoch.pdf);
it cites Daniel's 2003 thesis and the 2003 paper about the package.
After those, the NEWS file lists some recent additions.
emdbook makes use of rgl and some other 3d engines, as does misc3d.
scatterplot3d does it's own drawing. rggobi is a completely different
interactive package.
What is the best resource for learning about all the foo3d() and lower
level functionality that rgl and its dependents provide? I saw a book
at B&N just last week on openGL. Would that be helpful?
It might, but probably not. rgl is intended to be a higher level R-style
interface to the things described in a book like that. So if you have a
particular question about how to do something, you'd never find it there.
On the other hand, if you want to know if something is possible, then that
might be a place to look for ideas.
Duncan Murdoch
Mark
On Tue, Jun 24, 2008 at 10:54 PM, Ben Bolker <[EMAIL PROTECTED]> wrote:
Mark Kimpel <mwkimpel <at> gmail.com> writes:
I'm using the command below on an open3d() object to create a shaded
cube. Changes to myScalingFactor do not effect changes in the size of
the cube. What is the correct approach? Mark
how about scale3d() ?
shade3d(translate3d(scale3d(cube3d(),5,5,5),-6,1,-1),col="blue", alpha =
0.2)
shade3d(translate3d(cube3d(),-6,1,-1),col="green", alpha = 0.2)
shade3d(translate3d(scale3d(cube3d(),10,10,10),-6,1,-1),col="red", alpha
= 0.2)
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