[R] heplot3d / rgl : example causes R GUI to crash

[Duncan Murdoch]

On 10/02/2010 9:33 AM, Michael Friendly wrote:
> [Env: Tested under Win Xp, R 2.9.2 and R 2.10.1; sessionInfo() at end]
>   

This is probably a bug in rgl, and I can reproduce it.  Bugs in 
contributed packages are best sent to the maintainer of the package, 
because otherwise they might be lost.  In this case I did see it, so no 
need for you to do anything more.

Duncan Murdoch
> I've run into a problem with the heplot3d() function in my heplots 
> package which causes the R GUI to crash
> ('R for Windows GUI encountered a problem and needs to close...'). I 
> think the problem comes from an
> rgl call, but, I can't get a traceback or other information because my R 
> session crashes. I've never seen this
> behavior before.
>
>
> The problem occurs *whenever* I try to supply linear hypotheses to be 
> displayed along with the model
> terms. Here is a small example:
>
> library(heplots)
> # Soils data, from car package
> soils.mod <- lm(cbind(pH,N,Dens,P,Ca,Mg,K,Na,Conduc) ~ Block + 
> Contour*Depth, data=Soils)
> Anova(soils.mod)
>
> heplot(soils.mod, variables=c("Ca", "Mg"))
> ## this works OK
> heplot3d(soils.mod, variables=c("Mg", "Ca", "Na"))
>
> ## this crashes R, but it draws most of the plot first
> heplot3d(soils.mod, variables = c("Mg", "Ca", "Na"), hypotheses = 
> "ContourSlope")
>
> ## linear.hypothesis does work on this:
>  > print(linear.hypothesis(soils.mod, "ContourSlope"), SSP=FALSE)
>
> Multivariate Tests:
> Df test stat approx F num Df den Df Pr(>F)
> Pillai 1 0.5844882 3.907418 9 25 0.003312 **
> Wilks 1 0.4155118 3.907418 9 25 0.003312 **
> Hotelling-Lawley 1 1.4066706 3.907418 9 25 0.003312 **
> Roy 1 1.4066706 3.907418 9 25 0.003312 **
> ---
> Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1
>  >
>
> I would be grateful if someone could (a) confirm that this is a general 
> problem, not just my system; (b)
> suggest how to determine what is going wrong.
>
>  > sessionInfo()
> R version 2.10.1 (2009-12-14)
> i386-pc-mingw32
>
> locale:
> [1] LC_COLLATE=English_United States.1252
> [2] LC_CTYPE=English_United States.1252
> [3] LC_MONETARY=English_United States.1252
> [4] LC_NUMERIC=C
> [5] LC_TIME=English_United States.1252
>
> attached base packages:
> [1] stats graphics grDevices utils datasets methods base
>
> other attached packages:
> [1] rgl_0.89 heplots_0.8-11 car_1.2-16
>  >
>
>