[R] Need help ploting time series(2)

jim holtman jholtman at gmail.com
Tue Oct 16 04:40:25 CEST 2007

Here are a couple of ways that you can do it:

x <- expand.grid(YEAR=c(2003,2004), MONTH=1:12, DAY=1, STATE=LETTERS[1:4])
x$SALES <- runif(nrow(x), 10, 100)
# add date for plotting
x$date <- ISOdate(x$YEAR, x$MONTH, x$DAY)
# sort into date order for plotting
x <- x[order(x$date),]
# you can use lattice
xyplot(x$SALES ~ x$date | x$STATE, type='l')
# or you can use base plot
invisible(lapply(split(x, x$STATE), function(.state){
    plot(.state$date, .state$SALES, type='l', main=.state$STATE[1])

On 10/15/07, gsmkb86 <gsmkb_86 at hotmail.com> wrote:
> hi:
> Yesterday I post a message about hoy to plot a time series, but someone told
> me to post more information about the file so here it is:
> the file was read using read.table and the name is list. When I use
> str(list) it tells the following variables:
> YEAR int: 2003,2003,2003....2004
> MONTH int:1,1,1,1,....
> DAY:int 1,1,1,...
> STATE: factor with 51 levels.
> SALES: int (sales per day)
> The reason why the month day and year are repeated is because there is 1
> observation on day 1 month 1 and year 1 for each state.
> What i want to do is plot a time series for every state (each separated but
> in the same page) being on Y axis the sales and on the X axis the time. Any
> help is greatly appreciated.
> Thanks in advance.
> --
> View this message in context: http://www.nabble.com/Need-help-ploting-time-series%282%29-tf4628022.html#a13214340
> Sent from the R help mailing list archive at Nabble.com.
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Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?

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