[R] detecting blanks in read.table()
Peter Dalgaard BSA
p.dalgaard at biostat.ku.dk
Tue Jul 31 23:33:07 CEST 2001
Laura Forsberg <toad at alvie-mail.lanl.gov> writes:
> Hi everyone,
> I am trying to read in a tab delimited data file to R that has outliers
> marked by blank spaces. I would like to be able to tag those as "NA"
> when the data is read in. I cannot figure out how to do this using the
> read.table() options. Everything I have tried either puts all the NA on
> the end of the row when there are missing values instead of on their
> appropiate columns or won't read the data in at all.
> Thanks much,
Blank or empty? Using read.delim() or read.table(...,sep="\t") should
at least get the columns right. You might need na.strings=" " to
prevent it from interpreting the entire column as a factor.
O__ ---- Peter Dalgaard Blegdamsvej 3
c/ /'_ --- Dept. of Biostatistics 2200 Cph. N
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907
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