Displaying 4 results from an estimated 4 matches for "vonka".
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vodka
2006 Jul 12
4
Is it possible to only read a subset by read.table ?
Hello,
is it possible to do something like
DATA <- read.table(file="blabla.dat",subset=(sex=="male")),
i.e. make R read only a subset of a csv file ?
I think it would be useful in case of very big datasets,
but I can't find such a feature.
Thanks for an answer,
David Vonka
2006 Jan 23
1
R-2.2.1 doesn't compile under cygwin/Win2000
...-----------------------------
-----
al/include -DHAVE_CONFIG_H -D__NO_MATH_INLINES -g -O2 -c zutil.c -o zutil.o
rm -f libz.a
ar cr libz.a adler32.o compress.o crc32.o deflate.o gzio.o infback.o
inffast.o inflate.o inftrees.o trees.o uncompr.o zutil.o
ranlib libz.a
make[4]: Leaving directory `/home/Vonkad/R-2.2.1/src/extra/zlib'
make[3]: Leaving directory `/home/Vonkad/R-2.2.1/src/extra/zlib'
make[3]: Entering directory `/home/Vonkad/R-2.2.1/src/extra/xdr'
make[4]: Entering directory `/home/Vonkad/R-2.2.1/src/extra/xdr'
making xdr.d from xdr.c
making xdr_float.d from xdr_float.c
mak...
2006 Jun 27
1
Very slow read.table on Linux, compared to Win2000
...file="TBO.dat",sep="\t",header=TRUE,dec=","); # this takes forever
TBO$sexe<-factor(TBO$sexe,labels=c("man","vrouw")); # even this takes like 30 seconds, compared
to nothing on Win2000
I'd be grateful for any suggestions,
Regards,
David Vonka
------------------------------------------------------------------
David Vonka (Netspar, Universiteit van Tilburg, room B-623)
CZ: Ovci Hajek 42, Praha 5, Czech Republic, tel: +420777022926
NL: Telefoonstraat 1, 5038DL Tilburg, The Netherlands, tel:+31638083064
2007 Apr 10
2
Computational speed question
...x). In general (outside R, text editing, whatever), the Celeron is
much slower than any of the two P4.
Is there any reason for this ? Is R better optimized for Linux ? Some
options I might have used when installing R on one of the Linuxes and
not on the other one ?
Thanks for an answer.
David Vonka