On Thu, 21 Apr 2005, Robin Schroeder wrote: > Dear R-list, > > I am trying to do a relatively simple manipulation in R on a dbf file and > then write the dbf file back out the file system. Here are the commands: > > (load the foreign library package) > union <- read.dbf("C:/ITRSampleData/fromGrass/union.dbf", as.is=FALSE) > attach(union) > union$wu_fract <- area_union*a_SUM/a_area_tor > detach(union) > write.dbf(union, "C://ITRSampleData/fromR/union_postR.dbf") > > after I run the last command, Windows tells me that R has encountered a > problem and needs to shut down. It also asks if I want to report the > problem to microsoft... R then shuts down completely. > > I have tried this with the factor2char=TRUE and FALSE, with the same result. > I checked is.data.frame(union) and it is true. > > An empty dbf file is created in the correct place, so I know R has > access/permissions and my file path is correct. > > I have used the write.dbf command in a number of other places and have > never run into this problem.
Please state the version of the foreign library you are using, update foreign to 0.8-7, and try again. There were two bugs in write.dbf() up to 0.8-5, one when a column of the data frame was all 0 and the other when a column was all NA. Also please do summary(union$wu_fract) - I suspect it is either all 0 or NA. 0.8-7 guards against both of these problems, which are in code trying to work out the appropriate width of the output DBF fields. > > I am running R 2.0.0 on windows xp. > > Any ideas? > > Thanks in advance, > Robin Schroeder > > > > Robin Tori Schroeder (formerly Schoeninger) > > International Institute for Sustainability > > P.O. Box 873211 > > Arizona State University > > Tempe, Arizona 85287-3211 > > Phone: (480) 727-7290 > > > > > > > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > -- Roger Bivand Economic Geography Section, Department of Economics, Norwegian School of Economics and Business Administration, Helleveien 30, N-5045 Bergen, Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43 e-mail: [EMAIL PROTECTED] ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html