[R] plotrix_3.2

[Jim Lemon]

Hi all,
plotrix 3.2 has arrived. The reason for this announcement is that there 
have been a couple of major rewrites.

The barNest family of functions has had an overhaul that began as a fix 
for an apparently trivial bug that caused problems with empty 
subcategories. So far, testing has not found anything that will break 
code written for the former version.

color.scale will now convert numeric values into colors in all three 
color specifications, RGB, HSV and HCL. Again, I think that previous 
code will run with the new version. The change that will probably cause 
trouble is the renaming of the color range arguments from redrange, 
greenrange and bluerange to cs1, cs2 and cs3. The user can trip up the 
function more easily, as the three specs have different color parameter 
ranges.

If the new version does break anyone's code, especially for packages 
that depend upon plotrix, please let me know and I'll do my best to 
resolve any problems.

Jim