Error in loading rgl package with Mac OS X

Question

I am trying to install rgl package (0.92.858) for R (2.14.2) under Mac OS X (Lion 10.7.3). When I try to load it (library(rgl)), I get the following error:

Answer 1

It requires building from the source as there is a problem with the path to libpng.dylib path if using the built in source install. The process is:

1) Download the source files from http://download.r-forge.r-project.org/src/contrib/rgl_0.92.879.tar.gz - You need to download the source files from here since you have to manually install the program.

2) Unzip the files to a convenient location. You can do this by double clicking on the .tar file

3) Open Terminal and navigate to the directory that you placed the files in. I put them on my desktop so the command is:

cd ~/Desktop

4) In Terminal run

R CMD INSTALL --with-libpng-prefix=/usr/X11/lib/ rgl

You can then delete all the files you downloaded. Note that I am running Mac OS X 10.7.3 with R 2.15.0. The specific paths may be slightly different if you are on a different version. You do not need the rgl folder or files after you install them and they can be deleted.