I'm having a problem with rgl.snapshot. If I run the following code *once*
and *once only*, all is well.
data(trees)
attach(trees)
plot3d(Height, Girth, Volume, type='s')
rgl.snapshot("/home/user/pic.png", fmt="png", top=TRUE )
And the pic.png looks right. But if I try to rerun rgl.snapshot anytime again
in this session, the file pic.png still outputs but is nothing but colored
lines, like in a TV test pattern.
I also tried the built-in example:
shade3d(oh3d(), color="red")
rgl.bringtotop()
rgl.viewpoint(0,20)
setwd(path)
for (i in 1:45) {
rgl.viewpoint(i,20)
filename <-
paste("pic",formatC(i,digits=1,flag="0"),".png",sep="")
rgl.snapshot(filename)
}
and all the png files are colored lines.
I seem to have no trouble installing rgl (my configure output is below), and I
have seen the previous messages about finding paths to the X11 etc. lirbaries.
My libpng is up to date. I have tried this on two different Ubuntu hardy
machines and get the same thing.
Anybody else out there get this?
Thanks.
Configure output
sudo R CMD INSTALL --configure-args='--x-includes=/usr/include/X11
--x-libraries=/usr/lib' rgl_0.79.tar.gz
* Installing to library '/usr/local/lib/R/site-library'
* Installing *source* package 'rgl' ...
checking for gcc... gcc -std=gnu99
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc -std=gnu99 accepts -g... yes
checking for gcc -std=gnu99 option to accept ANSI C... none needed
checking how to run the C preprocessor... gcc -std=gnu99 -E
checking for gcc... (cached) gcc -std=gnu99
checking whether we are using the GNU C compiler... (cached) yes
checking whether gcc -std=gnu99 accepts -g... (cached) yes
checking for gcc -std=gnu99 option to accept ANSI C... (cached) none needed
checking for libpng-config... yes
configure: using libpng-config
configure: using libpng dynamic linkage
checking for X... libraries /usr/lib, headers /usr/include/X11
checking GL/gl.h usability... yes
checking GL/gl.h presence... yes
checking for GL/gl.h... yes
checking GL/glu.h usability... yes
checking GL/glu.h presence... yes
checking for GL/glu.h... yes
checking for glEnd in -lGL... yes
checking for gluProject in -lGLU... yes
checking for freetype-config... yes
configure: using Freetype and FTGL
configure: creating ./config.status
config.status: creating src/Makevars
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