Hi
baptiste auguie wrote:
Dear all,
This may be specific to Mac, I haven't had a chance to test another
platform. Consider this,
plot(1,1,t="n")
rasterImage(matrix(1),1,1,1,1)
library(grid)
grid.rect(gp=gpar(fill="grey"))
>
The grid.rect covers the full device window as expected. However, when
I resize the window ever so slightly (interactive device) the rectGrob
is suddenly clipped to the previous plot window. I cannot understand
this behavior, and it doesn't happen if one removes the rasterImage()
call, so I suspect something iffy is going on with the display list or
something.
It happens like this:
# 1. Clip to the device and draw axes and labels
plot(1,1,t="n")
# 2. Clip to the plot region and draw raster
rasterImage(matrix(1),1,1,1,1)
library(grid)
# Oooh! This is the first time any grid drawing
# has occurred on the device, so initialize grid
# stuff, including the top-level viewport,
# *which clips to the device*
# 3. Draw a rectangle
grid.rect(gp=gpar(fill="grey"))
# Resize the window ...
# which triggers a redraw ...
# Oooh! There is grid output on this device so
# initialize grid stuff, including the top-level
# viewport *which clips to the device* ...
# 1. Clip to the device and draw axes and labels
# 2. Clip to the plot region and draw raster
# 3. Draw a rectangle
A workaround is to explicitly do a clip before the grid.rect(), i.e., ...
plot(1,1,t="n")
rasterImage(matrix(1),1,1,1,1)
library(grid)
grid.clip()
grid.rect(gp=gpar(fill="grey"))
... and I will add this example to the things I will look at when I am
trying to clean up the grid code a bit.
The only device I've tried is quartz(), x11() crashed with rasterImage,
That is more serious. I have heard of a couple of others like this and
I think the common thread may be 64-bit MacOS X. I need to get access
to such a beast to take a look.
Paul
*** caught segfault ***
address 0x28, cause 'memory not mapped'
Traceback:
1: rasterImage(matrix(1), 1, 1, 1, 1)
sessionInfo()
R version 2.11.1 (2010-05-31)
x86_64-apple-darwin9.8.0
locale:
[1] en_GB.UTF-8/en_GB.UTF-8/C/C/en_GB.UTF-8/en_GB.UTF-8
attached base packages:
[1] grid stats graphics grDevices utils datasets methods base
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--
Dr Paul Murrell
Department of Statistics
The University of Auckland
Private Bag 92019
Auckland
New Zealand
64 9 3737599 x85392
p...@stat.auckland.ac.nz
http://www.stat.auckland.ac.nz/~paul/
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