On Sat, 29 Mar 2008, Tim Keitt wrote: > On Sat, Mar 29, 2008 at 10:25 AM, Tim Keitt <[EMAIL PROTECTED]> wrote: >> >> On Sat, Mar 29, 2008 at 10:01 AM, Tim Keitt <[EMAIL PROTECTED]> wrote: >> > >> > On Sat, Mar 29, 2008 at 8:41 AM, Roger Bivand <[EMAIL PROTECTED]> 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.
I'll try melanesia on my system, please try the US counties shapefile on yours. Roger > > 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: [EMAIL PROTECTED] >> > > >> > > >> > >> > >> > >> > >> > >> > -- >> > 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/ >> > > > > -- 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: [EMAIL PROTECTED] _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo
