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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 Si
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 wrote:
> Thx again for
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 wrote:
> Joris Meys gmail.com> writes:
>
>>
>> I b
Joris Meys 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 t
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 then?
Cheers
Joris
On Mon, Feb 14, 2011 at 5:30
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,
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, 1.73) :
Per-pixel alpha not supported on this device
No picture
