Error: not 'a real'?
Le samedi 20 octobre 2012 ? 14:25 +0200, Brian a ?crit :
Hi Jim, On 10/20/12 13:36, Jim Holtman wrote:
how about supplying the context of the error. Show the lines in the file where the error occurred. > > Sent from my iPad > > On Oct 20, 2012, at 7:21, Brian <zenlines at gmail.com> wrote: >
>> Hi List,
>>
>> when supplying a vector of atomic vector classes to read.table, I get:
>> # column classes
>> colClasses=c("character", "character","numeric", "numeric",
"numeric", "numeric", "numeric", "numeric",
>> "numeric", "numeric", "numeric", "numeric") >> # Error: >> Error in scan(file, what, nmax, sep, dec, quote, skip, nlines,
na.strings, (from #2) : Line #2: (with 'skip=4', so really line 4, but the first line after the 'header', as indicated above) LAE;201001010000;2;894.6;3.9;93.8;5.3;3.1;204
scan() expected 'a real', got '894.6' >> >> How is '894.6' not 'a real [number]'? >> >> Thanks for the ensuing enlightenment or punishment... >> >> Best, >> Brian >> >> ______________________________________________ >> R-help at r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. my full command: read.csv2(file=file, skip=2, na.strings = "-", colClasses=c("character", "character","numeric", "numeric", "numeric", "numeric", "numeric", "numeric"))
Why didn't you tell us that you were using read.csv2() and not read.table() directly? read.csv() passes dec="," to read.table(), which explains why numbers with a dot are not detected as reals. Just pass dec="." to fix the problem Regards
Also, sorry I forgot this: R version 2.15.1 (2012-06-22) Platform: x86_64-unknown-linux-gnu (64-bit) locale: [1] C attached base packages: [1] stats graphics grDevices utils datasets base other attached packages: [1] MASS_7.3-18 Thanks again. Brian
______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.