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[BUGZILLA #15782] (semi-)transparent "grid" elements disappear in the graphics device upon resizing #5324
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Created attachment 1821 [details] # this bug is still reproducible in R 3.2.0 and R-devel. # setting up colors # lines with alpha < 1 are displayed when resizing a "base graphics" window: # in "grid", resizing the window causes all alpha < 1 lines to disappear: METADATA
INCLUDED PATCH
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This is not reproducible on ...
platform x86_64-unknown-linux-gnu METADATA
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(In reply to Paul Murrell from comment #2)
this problem is windows-specific - debian, kubuntu, etc. work fine (couldn't test it on a mac). just reproduced this on another windows machine: METADATA
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Created attachment 1594 [details]
new window with all 3 lines, only the opaque line remains after resizing the window.
if you plot something like
library("grid")
pushViewport(viewport())
grid.segments(.25,.25,.75,.75,gp=gpar(col=gray(0,.25)))
grid.segments(.25,.75,.75,.25,gp=gpar(col=gray(0,.75)))
grid.abline(.5,0)
popViewport()
using the "grid" package, all 3 lines are displayed correctly upon opening a new device - if the graphics window is resized, the transparent elements disappear (see screenshot). line width, etc. do not affect this behavior.
resizing the graphics device works fine under debian and kubuntu, so i guess it's windows-specific.
thx_m
METADATA
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