[R] ggplot2 / time series with different scales

[Xie Chao]

you can use facet_wrap:

df <- melt(df, id=c('time', 'sid'))
ggplot(df, aes(time, value, colour=sid)) +
   geom_line(data = subset(df, variable=='sales')) +
   geom_point(data = subset(df, variable=='price')) +
   facet_wrap(~variable, ncol=1, scales='free_y')

Xie Chao

On Fri, Feb 5, 2010 at 12:22 AM, Dieter Menne
<dieter.menne at menne-biomed.de> wrote:
>
>
> chuckwhite wrote:
>>
>> I am trying to plot this dataset using ggplot2:
>>
>> .. self-contained example removed
>>
>> How can I plot the price (using geom_point) in a separate plot just above
>> the sales plot so that the xaxes match and the yaxes are different.
>>
>>
> To quote Hadley Wickham: http://markmail.org/message/xbuecsbudjxkmqkf
>
> "However, what you describe sounds like you want multiple scales on a single
> plot - and that's not something that ggplot is likely to ever support"
>
> One alternative would be to use free scales on separate plot. Or even
> better, a plot of sales against price? I know, executives and clinic head
> have troubles understanding these.
>
> Dieter
>
>
> --
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