Hi,
Try this:
dat1<-read.table(text="1 2012-07-01 00:57:54 +0900 156
2 2012-07-01 01:07:41 +0900 587
3 2012-07-01 01:09:31 +0900 110
4 2012-07-01 01:18:42 +0900 551
5 2012-07-01 01:39:01 +0900 1219
6 2012-07-01 01:40:40 +0900 99",sep="",header=FALSE,stringsAsFactors=FALSE)
dat2<-data.frame(date=paste(dat1[,2],dat1[,3],paste0("+",dat1[,4]),sep="
"),Interval=dat1[,5])
dat2$date<-as.POSIXct(dat2$date,"%Y-%m-%d %H:%M:%S")
library(xts)
dat3<-xts(dat2[,-1],order.by=dat2[,1])
plot(dat3)
A.K.
----- Original Message -----
From: ishi soichi <soichi...@gmail.com>
To: r-help <r-help@r-project.org>
Cc:
Sent: Monday, January 7, 2013 3:55 AM
Subject: [R] plot x-axis DateTime NOT evenly spaced
R-64 latest
Hi. I am trying to plot a set of csv data, which looks like
> head(interval)
date inteval
1 2012-07-01 00:57:54 +0900 156
2 2012-07-01 01:07:41 +0900 587
3 2012-07-01 01:09:31 +0900 110
4 2012-07-01 01:18:42 +0900 551
5 2012-07-01 01:39:01 +0900 1219
6 2012-07-01 01:40:40 +0900 99
as you can see, more than one event happens each day, and they are not
evenly spaced. Obviously hours, minutes and seconds are important for the
plot.
I tried
interval$date <- as.Date(interval$date, "%Y-%m-%d %H:%M:%S +0900")
but this chops the time off.
Could anyone show me how to plot data with x values as Date(or Time)
objects?
soichi
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