On Wed, 28 Apr 2004, Danny Heuman wrote: > Hi Herry, > > On Thu, 29 Apr 2004 12:20:44 +1000, you wrote: > > >Hi List, > > > >I am trying to read a large shapefile (~37,000 polys) using read.shape [winxp, 1gig > >ram, dellbox). I receive the following error: > > > >AppName: rgui.exe AppVer: 1.90.30412.0 ModName: maptools.dll > >ModVer: 1.90.30412.0 Offset: 0000309d > > > >The getinfo.shape returns info, and the shapefile is readable in arcmap. > > > >Any ideas on how to overcome this? > > > >Thanks Herry > > > >------------------------------------------- > >Alexander Herr - Herry > >-------------------------------------------- > >� > > I've had difficulty if there is too much detail in the polygon > definition (i.e. too many nodes). Try thinning the polygons and try > again. > > Danny >
I think that this is fair advice. The underlying shapelib code may not scale well to very many, very intricate polygons, and may not handle malformed polygons gracefully. Arcgis typically both reads and writes its own format quite uncritically. If this really needs to be solved, please contact me off-list with a smaller reproducible sample and information on the platform you are using (looks like windows (XP?), R 1.9.0, but which maptools? Roger Bivand Economic Geography Section, Department of Economics, Norwegian School of Economics and Business Administration, Breiviksveien 40, N-5045 Bergen, Norway. voice: +47 55 95 93 55; fax +47 55 95 93 93 e-mail: [EMAIL PROTECTED] ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
