Hi, Thank you Alexander, your solution seems to work!
Best, Maarten Hi, yes, the quotes are indeed tricky... The challenge is to provide the correct mix of escaped and un-escaped single and double quotes to Python / ArcGIS as in this Python example: gp.select_analysis("nfroads.shp", "paved.shp", ' "ROAD_CLASS" = \'PAVED\' ') In order to achieve this, the backslashes in \' have to be escaped themselves, otherwise R will interpret them as escape symbols. After all, \' ends up being coded as \\\' in R. Also, double double-quotes have to be avoided; the quote.args argument of rpygeo.geoprocessor can be used to suppress the outermost double quotes, single quotes can be used explicitly instead: " ' sqlquery ' " So here are two solutions: env = rpygeo.build.env( workspace = "C:/TEMP", overwriteoutput = TRUE ) rpygeo.geoprocessor("select_analysis", list( "nfroads.shp", "paved.shp", " ' \"ROAD_CLASS\" = \\\'PAVED\\\' ' "), clean.up = FALSE, quote.args = c(T,T,F), env = env) # alternative: rpygeo.geoprocessor("select_analysis('nfroads.shp','paved.shp','\"ROAD_CLASS\"=\\\'PAVED\\\'')", env = env, clean.up = FALSE) I hope this helps... Cheers Alex -- View this message in context: http://n2.nabble.com/RPyGeo-Query-probably-easy-tp2766675p4197371.html Sent from the R-sig-geo mailing list archive at Nabble.com. _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo