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. 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/ > -- 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/ _______________________________________________ R-sig-Geo mailing list [email protected] https://stat.ethz.ch/mailman/listinfo/r-sig-geo
