On Tue, Feb 25, 2014 at 11:10:12AM -0800, Jeff Newmiller wrote: > This is really not new... Google is your friend... http://bit.ly/1fCUnQH... > or read FAQ 7.19. The fact that this "changed" for you seems more like > something changed on your end... did your admin remove X11 from your system? > ...
I am my sysadmin. (I actually was one for about 3 decades prior to my
current position. I am not now, nor have I ever been, a statistician.)
I had never had an issue (since May 2012) creating a PNG file from a
script running out of crontab -- thus my surprise when it failed.
As an experiment, I tried running the script in an xterm that had
DISPLAY defined properly; the PNG files were created (without
displaying them on the X11 display device), but I did get some odd
messages, and a couple of the plots came out effectively blank
(which I don't find especially useful):
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
Warning message:
In plot.xy(xy, type, ...) :
semi-transparency is not supported on this device: reported only once per page
(These were from plots where I specified an "alpha" value. The
first was from a invocation of the form:
p <- qplot(..., geom = c("blank"), ...) + geom_violin(..., fill=I("steelblue"))
+ geom_boxplot(..., fill="gold", alpha=0.75)
and the second, of the form:
plot(xvals, yvals, pch = ".", col = col_list, ...)
where "col_list" is a list of colors, each of which includes a
specification of "alpha = 0.2".)
Peace,
david
--
David H. Wolfskill r...@catwhisker.org
Taliban: Evil cowards with guns afraid of truth from a 14-year old girl.
See http://www.catwhisker.org/~david/publickey.gpg for my public key.
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