Read the help desk article in R-News 4/1 and see ?as.Date ?strptime (for setting the as.Date format= argument)
Also, you might be interested in the zoo package library(zoo) ?read.zoo vignette("zoo") vignette("zoo-quickref") On 3/23/07, Andreas Tille <[EMAIL PROTECTED]> wrote: > Hi, > > I'm on my very first steps to R and so I hope that I do > not ask a really stupid questions but I did not found it > via R-Search, in the FAQ or Google (BTW, the name "R" is > not a really good seekiong criterion ;-) ). > > I have a data file containing a table that containes > dates and values like > > date\t value1\t value2, ... > 01.03.2007\t 17\t 42\t ... > 02.03.2007\t 2\t 3\t ... > 03.03.2007\t 47\t 11\t ... > ... > > I was perfectly able to read this file via > > mydata <- read.csv(file='mydata.dat', sep = '\t', quote='', > fill=TRUE,header=TRUE ) > > but the date vector is a vector of strings instead of date values. > I want to convert these strings into date values to be able > to make graphs where date is the x-axis and value? the y-axis. > > I would be really happy if someone could enlighten me how to > do this conversion (and a hint how to do a graph as PNG) would > be an extra bonus which would shorten my further reading of the > docs). > > Kind regards and thanks for your help > > Andreas. > > -- > http://fam-tille.de > > ______________________________________________ > 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 > and provide commented, minimal, self-contained, reproducible code. > ______________________________________________ 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 and provide commented, minimal, self-contained, reproducible code.