I am having trouble manipulating a large data set to change a spatial polygons data frame
I have read in an ESRI polygon shapefile using rgdal and readOGR that contains 18804 polygons. I am trying to add two variables into the spatial data frame but it's not working. I'm doing this using cbind(SpatialPolygonsDataFrame,new variable,rank(new variable)). Before I killed R Task Manager said it was using more than 1,050,000K virtual memory, which given my whole computer ground to a halt I'm guessing is the limit! I regularly handle larger data frames than this using R without any problem so I don't think the problem is R in general. Does anyone have any suggestions as to either the size of the data set that it is possible to handle as a spatial data frame or a better way of combining spatial data frames? Thank you Caroline JBA Consulting - Engineers and Scientists South Barn, Broughton Hall, Skipton, North Yorkshire, BD23 3AE, UK t: +44 (0)1756 799919 f: +44 (0)1756 799449 JBA is a Carbon Neutral Company. Please don't print this e-mail unless you really need to. This email is covered by JBA Consulting's email disclaimer at www.jbaconsulting.co.uk/emaildisclaimer _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo
