x axis problem when plotting

Hi,

May be this helps:

dat1<-read.table(text="
? Date Var day
? 1/1/2013 1 Tue
? 1/2/2013 2 Wed
? 1/3/2013 3 Thu
? 1/4/2013 4 Fri
? 1/5/2013 5 Sat
? 1/6/2013 6 Sun
? 1/7/2013 7 Mon
? 1/8/2013 8 Tue
? 1/9/2013 9 Wed
? 1/10/2013 10 Thu
",sep="",header=TRUE,stringsAsFactors=FALSE)
?dat1$days<-as.numeric(format(as.Date(dat1$Date,format="%m/%d/%Y"),"%w"))
plot(Var~days,data=dat1,xaxt="n",xlab="Day of week")
?axis(1,at=dat1$days,labels=dat1$day)
A.K.



----- Original Message -----
From: Ye Lin <yelin at lbl.gov>
To: R help <r-help at r-project.org>
Cc: 
Sent: Tuesday, May 21, 2013 7:22 PM
Subject: [R] x axis problem when plotting

Hey I have a dataset like this:

? Date Var day? 1/1/2013 1 Tue? 1/2/2013 2 Wed? 1/3/2013 3 Thu? 1/4/2013 4
Fri? 1/5/2013 5 Sat? 1/6/2013 6 Sun? 1/7/2013 7 Mon? 1/8/2013 8 Tue
1/9/2013 9 Wed? 1/10/2013 10 Thu
And I want to plot Var~day
Here is the code I use:

plot(Dataset$Var~Dataset$day,xlab='Day of a week')

Then I get this error message:
ERROR: need finite 'xlim' values

When I use similar code to plot Var~Date, it works fine. I have tired plot
the line first then add X axis using axis(1,Dataset$day), it doesnt work
either.

Really appreciate your help!

??? [[alternative HTML version deleted]]

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