importing date vector with read.table
On Fri, 10 Dec 2010, Jack Johnson wrote:
Hi,
I understand this should be an easy task but I am still struggling a bit to
read a .txt file with a date vector. My code is as below:
data<-read.table(file.choose(),header=TRUE,sep="\t",dec=",",colClasses=c("Date","numeric","numeric","numeric"))
But I am getting an error:
Error in charToDate(x) :
character string is not in a standard unambiguous format
because my date vector is in a format below:
format="%d.%m.%Y"
But how can i define the date format for date vector in read.table
function....?
It is easiest to simply read the column as character, and convert later by as.Date(x, format="%d.%m.%Y") You might want to consider using read.delim2 to get all the usual defaults for a tab-delimited file in a locale using comma as decimal separator.
Br, Jack [[alternative HTML version deleted]]
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Brian D. Ripley, ripley at stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595