Hi list, I'm a newcomer to GIS and r-sig-geo. I have exported some shapefiles from ArcGIS and succeeded in plotting them with R. But one shapefile has a different coordinate system, I think, and it does not turn up in the graph when added to the others. In ArcGIS, this layer had an "unknown" coordinate system, but rendered at the right location in relation to the other layers.
I have made a tar-archive with the shape-files and a script to import them into R and generate a map. The problematic shape is "sdn". http://sociologi.cjb.net/temp/create-map-data.tbz http://sociologi.cjb.net/temp/create-map.r Here is the summary output of a "good" shape, "yta", followed by summary of the problematic shape "sdn". > summary(yta) Object of class SpatialPolygonsDataFrame Coordinates: min max r1 303850 344600.1 r2 6388900 6415400.0 Is projected: TRUE proj4string : [+proj=utm +zone=33 +ellps=GRS80 +units=m +no_defs] Data attributes: KKOD SHAPE_AREA SHAPE_LEN Min. :1.000 Min. :7.812e+05 Min. : 3530 1st Qu.:3.000 1st Qu.:1.125e+06 1st Qu.: 5514 Median :5.000 Median :3.006e+06 Median : 9121 Mean :4.941 Mean :1.272e+09 Mean : 647692 3rd Qu.:7.000 3rd Qu.:1.685e+07 3rd Qu.: 37437 Max. :7.000 Max. :3.119e+10 Max. :21081735 > summary(sdn) Object of class SpatialPolygonsDataFrame Coordinates: min max r1 1247825 1288137 r2 6382086 6422038 Is projected: TRUE proj4string : [+proj=tmerc +lat_0=0 +lon_0=15.80827777777778 +k=1 +x_0=1500000 +y_0=0 +ellps=bessel +units=m +no_defs] Data attributes: SW_MEMBER NAMN DISTRIKT REG_DATUM DATUM Min. : 1 10 Högsbo : 1 Centrum: 4 1996/01/01:21 2001/09/10:21 1st Qu.: 6 11 Älvsborg: 1 Norr :10 Median :11 12 Frölunda: 1 Väster : 7 Mean :11 13 Askim : 1 3rd Qu.:16 14 Tynnered: 1 Max. :21 15 Styrsö : 1 (Other) :15 OPERATör KVALITET AREA PERIMETER eoh:21 Min. :0 Min. : 3729696 Min. :10507 1st Qu.:0 1st Qu.: 9113274 1st Qu.:15376 Median :0 Median : 16307500 Median :21493 Mean :0 Mean : 34423248 Mean :26351 3rd Qu.:0 3rd Qu.: 34864909 3rd Qu.:32932 Max. :0 Max. :198632325 Max. :64221 _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo