That driver was written last century by someone no longer active in the R project.
On Tue, 8 Feb 2005, Earl F. Glynn wrote:
"Duncan Murdoch" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED]On Tue, 8 Feb 2005 11:35:22 -0600, "Earl F. Glynn" <[EMAIL PROTECTED]> wrote :
In what version of R? I just tried in 2.01 and R-patched, and it was fine. Maybe the problem is your viewer?
Sorry.
I thought I was using R 2.0.1 but I used a shortcut on my desktop that started the older R 2.0.0 -- so I just rediscovered the problem that you've already fixed. With the correct shortcut to R 2.0.1, I am seeing a white bmp background. Sorry to have bothered you with this.
I don't see much information about the bmp driver (from ?bmp). I noticed the BMPs that are created have only 8-bit color depth, which means the palette must be stored with the image. But what is the palette R uses with BMPs? I always use true color (24-bit) bmps in Windows instead of 8-bit bmps to avoid palette issues on older 256 color displays.
Microsoft recommended only using 240 of the 256 palette entries, since 16 were reserved for system colors for older 256 color display monitors (which are no longer common) and the Windows palette manager. I guess R's bmps only have 240 colors that will work on all PCs.
So are bmps created under R restricted to a single, fixed 256 color palette? (I don't see any color palette parameter to the bmp device.) Is there any way to create an R bmp that is hicolor (15 or 16-bit color) or true color (24-bit color) to avoid the palette issues of 8-bit bmps?
Thanks for any info about this.
efg
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