[R] Can't plot transparency images in R-3.1.0

[Ulises M. Alvarez]

On 04/25/2014 07:26 PM, Fong Chun Chan wrote:
> Hi all,
>
> I recently upgraded to R-3.1.0 from R-3.0.2. Things seem to be fine, but
> when trying to plot a ggplot image with transparency, I get the following
> issue:
>
> Warning message:
> In grid.Call.graphics(L_polygon, x$x, x$y, index) :
>    semi-transparency is not supported on this device: reported only once per
> page
>
> This only appears to affect my R-3.1.0 installation and not my R-3.0.2 as I
> can still plot normally with it. Has anyone else experienced this problem?
>
> Thanks,

Hi:

After the upgrade to 3.1.0, did you execute?

update.packages(checkBuilt=TRUE)

I did it, and I have no problem running the code that you provide.

sessionInfo()
# R version 3.1.0 (2014-04-10)
# Platform: x86_64-pc-linux-gnu (64-bit)
#
# locale:
#  [1] LC_CTYPE=en_US.utf8       LC_NUMERIC=C
#  [3] LC_TIME=en_US.utf8        LC_COLLATE=en_US.utf8
#  [5] LC_MONETARY=en_US.utf8    LC_MESSAGES=en_US.utf8
#  [7] LC_PAPER=en_US.utf8       LC_NAME=C
#  [9] LC_ADDRESS=C              LC_TELEPHONE=C
# [11] LC_MEASUREMENT=en_US.utf8 LC_IDENTIFICATION=C
#
# attached base packages:
# [1] stats     graphics  grDevices utils     datasets  methods
# base
#
# other attached packages:
# [1] ggplot2_0.9.3.1
-- 
Ulises M. Alvarez
http://sophie.unam.mx/