[R-sig-Geo] Sleuthing X windows bug in Ubuntu Gutsy
Tim Keitt
tkeitt at gmail.com
Sat Mar 29 16:39:30 CET 2008
On Sat, Mar 29, 2008 at 10:25 AM, Tim Keitt <tkeitt at gmail.com> wrote:
>
> On Sat, Mar 29, 2008 at 10:01 AM, Tim Keitt <tkeitt at gmail.com> wrote:
> >
> > On Sat, Mar 29, 2008 at 8:41 AM, Roger Bivand <Roger.Bivand at nhh.no> wrote:
> > > On Fri, 28 Mar 2008, Tim Keitt wrote:
> > >
> > > > I'm trying to see if I can track down a bug in X windows that causes
> > > > it to crash when plotting (I believe) very small filled polygons (or
> > > > it may have to do with large numbers of polygons). I first noticed
> > > > this running QGIS. Loading a PostGIS layer with ~3K polygons will
> > > > cause X to abort. I can load the layer if I have already zoomed into a
> > > > smaller region of the coverage. Once I try to zoom out to the full
> > > > extent, X dies.
> > > >
> > > > So I tried loading the polygons into "sp" using "readOGR" which works
> > > > great. I could then plot the polygons, no problem. But when I called
> > > > "spplot" which I believe fills the polygons, same problem. X crashes.
> > > >
> > > > Can anyone confirm this behavior? Try plotting a large number of
> > > > polygons with spplot and also try very small polygons (less than a
> > > > pixel size). I can send around the shapefile if anyone is interested.
> > > > It contains GSHHS coastlines for Micronesia.
> > >
> > > I can't reproduce any problems on
> > >
> > > http://www.census.gov/geo/cob/bdy/co/co00shp/co99_d00_shp.zip
> > >
> > > library(rgdal)
> > > usc <- readOGR(".", "co99_d00")
> > > # OGR data source with driver: ESRI Shapefile
> > > # Source: ".", layer: "co99_d00"
> > > # with 3489 rows and 9 columns
> > > plot(usc, col=rainbow(52)[usc$state1])
> > > spplot(usc, "STATE", col.regions=rainbow(52))
> > >
> > > and:
> > >
> > > $ xdpyinfo
> > > name of display: :0.0
> > > version number: 11.0
> > > vendor string: The X.Org Foundation
> > > vendor release number: 60802000
> > > X.Org version: 6.8.2
> > > ...
> > > screen #0:
> > > dimensions: 1280x1024 pixels (361x271 millimeters)
> > > resolution: 90x96 dots per inch
> > > depths (7): 16, 1, 4, 8, 15, 24, 32
> > >
> > > Could you please make your file available - maybe there is something
> > > particular about it? Is there way of asking X which driver it is using
> > > (here nvidia proprietary for Legacy GPU version (1.0-71xx series), full
> > > details in /proc/driver/nvidia)?
> >
> > I'll put the file someplace where it can be downloaded.
>
> OK. It is at http://www.keittlab.org/~tkeitt/melanesia.tgz. I just
> confirmed loading this file into QGIS 0.9.2-rc2 reproduces the X
> crash. I'll test the same under Hardy shortly (requires a chroot).
>
> THK
>
>
>
> >
> > This has happened on my desktop using both nvidia and vesa drivers and
> > on my laptop with the intel driver.
I just confirmed the same bug under Hardy Heron again using QGIS
0.9.2-rc2. I'll try with "spplot" next.
THK
> >
> > THK
> >
> >
> > >
> > > Roger
> > >
> > > >
> > > > THK
> > > >
> > > >
> > >
> > > --
> > > Roger Bivand
> > > Economic Geography Section, Department of Economics, Norwegian School of
> > > Economics and Business Administration, Helleveien 30, N-5045 Bergen,
> > > Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
> > > e-mail: Roger.Bivand at nhh.no
> > >
> > >
> >
> >
> >
> >
> >
> > --
> > Timothy H. Keitt, Assistant Professor
> > University of Texas at Austin http://www.keittlab.org/
> > Contact info and schedule at http://www.keittlab.org/~tkeitt/
> > Please support open document formats http://opendocument.xml.org/
> >
>
>
>
> --
> Timothy H. Keitt, Assistant Professor
> University of Texas at Austin http://www.keittlab.org/
> Contact info and schedule at http://www.keittlab.org/~tkeitt/
> Please support open document formats http://opendocument.xml.org/
>
--
Timothy H. Keitt, Assistant Professor
University of Texas at Austin http://www.keittlab.org/
Contact info and schedule at http://www.keittlab.org/~tkeitt/
Please support open document formats http://opendocument.xml.org/
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