On 25.01.2012 16:44, Johannes Radinger wrote:
Hello,
I am wondering about the X11() graphic device on Windows.
I try to plot a raster image but nothing gets displayed. I
found some pages where it is mentioned that x11() not
always supports raster rendering.
Is there any add on for x11, any update or any R-package
which solves that displaying problem in Windows?
What I try to test it is an example from the
package {raster}:
library(raster)
DEU_alt<- getData("alt", country="DEU", mask=TRUE)
x11()
plot(DEU_alt,axes=TRUE)
best regards,
/johannes
Try an R version that is recent - it works for me.
Uwe Ligges
I first tried it with R 2.13.2 and raster version 1.9-64
(16-January-2012).
Now I also installed the most recent version R 2.14.1 (Platform:
i386-pc-mingw32/i386 (32-bit)) and raster version 1.9-64
(16-January-2012).
But in both cases no success. X11() opens and draws the axis and the
border for the scale but no raster...
I do not really understand why you are using x11(). The Windows device
is called windows() and you actually do not need to open it, since plot
opens it anyway. Or are you under cygwin (which is not really Windows)?
If not: Which version of Windows is this?
Of course I do not need to open a graphic device (as you said it is open
when calling plot). I just wanted to make it reproducable as e.g. Mac OS X
opens Quartz as a standard device when calling plot on my Mac machine.
So far as I understand the help are "all the devices (X11(), x11() and
windows() implemented as variants of the same device". Thus it makes no
difference if I call x11() or windows() or if 'plot' opens the device
automatically. In all cases there is no raster displayed.
Just some additional information from the 'grDevices' package:
library(grDevices)
dev.capabilities()
$semiTransparency
[1] TRUE
$transparentBackground
[1] "fully"
$rasterImage
[1] "yes"
$capture
[1] TRUE
$locator
[1] TRUE
$events
[1] "MouseDown" "MouseMove" "MouseUp" "Keybd"
I am running R via the standard RGUI (so no Eclipse, Rtinn etc.). The
machine I am working on is Windows 2008 Server Enterprise (Version 6.0) which
I am remotely accessing from a ThinClient with WindowsXP-embedded.
This is the standard configuration of our institution. Maybe that
configuration with ThinClients is a reason? But what should I ask our admin?
What
should he check etc?
Yes! the remotesoftware is probably unable to send the rasterimage!
See ?image:
"Problems with the rendering of raster images have been reported using
‘windows()’ devices under Remote Desktop."
I shifted this corresponce over to the more suitable r-devel-list.
@Uwe Ligges: Thank you for that usefull but very disappointing message. So it
seems that these are know problems caused by the RemoteDesktop Setup.
I just wanted to know if the source of the problem is caused by the R-code or
the RemoteDesktop Software. If it is caused by the RemoteDesktop (as you
stated)..are there any settings which need to be set by our IT-admin? Or is
there anything I/we can do to solve that problem?
Since it is correctly displayed locally, we can assume this is a problem
of the RDP connection. We do not know of a setting that enables the
feature via RemoteDesktop, but if you know any, please let us know and
we will include this in the documentation as a hint for others.
Best,
Uwe Ligges
Best regards,
Johannes
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