R devel - Oct 2004 - problems with bitmap images in windows XP

This is rw2000 on windowsXP

 jpeg("test.jpeg", bg="orangered")
 plot(1:10, 1:10, col="green")
 dev.off()

------

jpeg("test.jpeg", bg="blue")
 plot(1:10, 1:10, col="red")
 dev.off()

-------

 jpeg("test.jpeg", bg="green")
 plot(1:10, 1:10, col="red")
 dev.off()

---

jpeg("test.jpeg", bg="white")
 plot(1:10, 1:10, col="red")
 dev.off()

Now, all of this gives a bluish background when wieved with Windows 
Picture and Fax wiever or with the GIMP-2.0
The bg= argument does not seem to have any effect.

Now repeating in rw191:

jpeg("test.jpeg", bg="orangered")
 plot(1:10, 1:10, col="blue")
 dev.off()

and the background is blue (not the same "bluish" as above)

jpeg("test.jpeg", bg="blue")
 plot(1:10, 1:10, col="red")
 dev.off()

and the background color is red.

Similar symptoms with the other bitmap devices.

The only mention about bitmap devices in the NEWS file for R2.0.0 is

 o    The png() and jpeg() devices (and the bmp() device under Windows)
    now allow a nominal resolution to be recorded in the file.

So what has happened?

Kjetil




-- 

Kjetil Halvorsen.

Peace is the most effective weapon of mass construction.
               --  Mahdi Elmandjra

On Wed, 06 Oct 2004 10:14:15 -0400, Kjetil Brinchmann Halvorsen
<kjetil@acelerate.com> wrote :
>This is rw2000 on windowsXP
>
> jpeg("test.jpeg", bg="orangered")
> plot(1:10, 1:10, col="green")
> dev.off()
...
>Now, all of this gives a bluish background when wieved with Windows 
>Picture and Fax wiever or with the GIMP-2.0
>The bg= argument does not seem to have any effect.
....
>So what has happened?
There was a Windows-specific bug, for which I've just committed a fix.
Windows builds of r-patched or r-devel available tomorrow or later
should have it fixed.

Duncan Murdoch