Hi Dot,
Jeff's guess is probably correct, but perhaps you could describe the
crazy tick marks and the repeating labels a little more. I suspect
that if "newdate" was a character variable you wouldn't get a plot at
all, and if it is a factor, a few of the labels might identify what
went wrong.
Jim
> On April 14, 2015 5:04:48 PM PDT, Dot Lundberg <dotlundb...@gmail.com>
> wrote:
>>New to R. Having trouble with the xaxis in this code. The tick marks
>>are
>>crazy and the labels repeat. Any suggestions?
>>
>>par(mar=c(5,5,5,5))
>>
>>plot(LPB_PPT_R$newdate,LPB_PPT_R$Rain_cm,pch=0,type="l",col="black",yaxt="n",ylim=c(0,8),ylab="")
>>axis(side=2, at=c(0,2,4,6,8))
>>mtext("Precipitation (cm)", side = 2, line=2.5, at=4)
>>mtext("Date", side=1, line=2.5)
>>axis.Date(1, at=seq(min(LPB_PPT_R$newdate),
>>max(LPB_PPT_R$newdate),las=2,by="1 weeks"),format="%m-%Y")
>>
>>par(new=TRUE)
>>
>>plot(LPB_PPT_R$newdate,LPB_PPT_R$Cum_PPT,pch=1,type="l",col="grey",yaxt="n",ylim=c(0,100),
>>ylab="")
>>axis(side=4, at=c(0,50,100))
>>mtext("Cumulative Precipitation (cm)", side=4, line=2.5, at=50,
>>col="grey")
>>
>> [[alternative HTML version deleted]]
>>
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