[R] help with cube3d cube size

Mark Kimpel mwkimpel at gmail.com
Wed Jun 25 17:32:12 CEST 2008

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. Perusing the rgl.pdf
downloaded from CRAN demonstrates the same lack of documentation.
There is no vignette. In addition, I have found at least one other
package with 3d functions (emdbook::curve3d()).

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?


On Tue, Jun 24, 2008 at 10:54 PM, Ben Bolker <bolker at ufl.edu> 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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Mark W. Kimpel MD ** Neuroinformatics ** Dept. of Psychiatry
Indiana University School of Medicine

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