Joris Meys jorismeys at gmail.com writes:
I believed the standard plotting device on R in 2.12.1 would support
per-pixel alpha. It does support alpha, as
plot(1:2,type=l)
polygon(c(1,1,2,2),c(1,2,2,1),col=rgb(60,100,60,60,maxColorValue=255))
plots correctly. Which device should I use
Thx again for your answer. I've tried X11() - which is supposed to
support alpha per pixel as well, but on Windows that's still no avail.
So basically, on Windows I can forget about alpha?
Cheers
Jors
On Tue, Feb 15, 2011 at 2:20 PM, Ben Bolker bbol...@gmail.com wrote:
Joris Meys jorismeys at
Sorry, correction. X11() is not supposed to do that. So on Windows,
per-pixel alpha is no option apparently. Any chance this will be
implemented in the future?
Cheers
Joris
PS : also thx to Simon for his helpful answer earlier.
On Tue, Feb 15, 2011 at 2:40 PM, Joris Meys jorism...@gmail.com
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On 02/15/2011 08:44 AM, Joris Meys wrote:
Sorry, correction. X11() is not supposed to do that. So on Windows,
per-pixel alpha is no option apparently. Any chance this will be
implemented in the future?
Cheers
Joris
PS : also thx to Simon for
Joris,
On Feb 14, 2011, at 10:05 AM, Joris Meys wrote:
Dear all,
I noticed in the latest R version (R.2.12.1) that the readPNG gives
following warning when running the example code in the help file (or
when using any other png for that matter) :
50: In rasterImage(img, 1.2, 1.27, 1.8,
