Dear Juliane, It depents what you want with the data. You can, for example, use import.asc function (adehabitat package; rename your file from .txt to .asc),
or try rgdal package. Of course, you can also use read.table("myfile.txt", header=F, skip = 6) and deal your data as matrix. good luck, miltinho astronauta brazil On Wed, Jan 14, 2009 at 2:01 PM, Juliane Struve <juliane_str...@yahoo.co.uk>wrote: > Dear list, > > I am trying to read ArcGIS raster data sets into R after converting them > into ASCII .txt file. The text file I am trying to read contains > > ncols 250 > nrows 276 > xllcorner 344147.19411119 > yllcorner 3024657.6122834 > cellsize 0.19970250725746 > NODATA_value -9999 > > in the first lines followed by a grid of values that are either -9999 or 1. > > I have used read.table("myfile.txt") which yields this (first 10 lines). > > > V1 V2 > 1 ncols 2.500000e+02 > 2 nrows 2.760000e+02 > 3 xllcorner 3.441472e+05 > 4 yllcorner 3.024658e+06 > 5 cellsize 1.997025e-01 > 6 NODATA_value -9.999000e+03 > 7 -9999 -9.999000e+03 > 8 -9999 -9.999000e+03 > 9 -9999 -9.999000e+03 > 10 -9999 -9.999000e+03 > > I would like to have the data as a table with coordinates for each cell and > the actual value. > > Could somebody advise me which function I should use ? > > Many thanks, > > Juliane > > > > > _______________________________________________ > R-sig-Geo mailing list > R-sig-Geo@stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/r-sig-geo > [[alternative HTML version deleted]] _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo