Hi all,

Thanks for the quick replies.

Dennis - I tried rotating the y-axis tick labels 90 degrees and while the
x-axes became the same width, the x-axis values still didn't line up with
each other.  So maybe I need to be more clear - how can I get the x-axis
tick values to line up?  For example, I want the "2000" x-axis tick in the
upper and lower plots to be on top of each other (along with all the other
x-axis ticks).

Andrés - I tried the multiplot() function that you suggested, with the same
result as when I used the grid.arrange() function - the x-axis tick values
still don't line up.

The reason I want the x-axis tick values to line up is so that with a quick
look at the plots, a viewer will be able to understand the relationship
between the data depicted by the boxplots and the data depicted by the line
plot.

Any other ideas on how to make this work?

Thanks,
Saalem


On Thu, Apr 18, 2013 at 2:22 PM, Andrés Aragón Martínez <armand...@gmail.com
> wrote:

> Hi Saalem,
>
> Check the following:
>
> http://www.cookbook-r.com/Graphs/Multiple_graphs_on_one_page_(ggplot2)/
>
>
> Regards,
>
>
> Andrés AM
>
> El 18/04/2013, a las 09:47, Saalem Adera <saalemad...@gmail.com> escribió:
>
> > Hi all,
> >
> > I want to arrange two ggplot2 plots on the same page with their x-axes
> > lined up - even though one is a boxplot and the other is a line plot.  Is
> > there a simple way to do this?  I know I could do this using facetting if
> > they were both the same type of plot (for example, if they were both
> > boxplots), but I haven't been able to figure it out for two different
> types
> > of plots.
> >
> > Below is my test case:
> >
> > library(ggplot2)
> > library(gridExtra)
> >
> > #generate test precipitation data
> > year<-c(2000,2001,2002,2003,2004)
> > precip<-c(46,100,80,74,20)
> > yp<-data.frame(year, precip)
> >
> > #generate test fecal coliform data
> > year2<-c(2000,2000,2000,2000,2000,2000,2000,2000,2000,2000,
> > 2001,2001,2001,2001,2001,2001,2001,2001,2001,2001,
> > 2002,2002,2002,2002,2002,2002,2002,2002,2002,2002,
> > 2003,2003,2003,2003,2003,2003,2003,2003,2003,2003,
> > 2004,2004,2004,2004,2004,2004,2004,2004,2004,2004)
> > fc<-sample(1:1000, 50)
> > yfc<-data.frame(year2, fc)
> >
> > #make test precipitation plot
> > yp_plot<-ggplot(yp) + geom_point() + geom_line() + aes(year, y=precip) +
> > opts(title="Site X \n ", axis.text.x=theme_text(angle=45, hjust=1,
> > vjust=1)) +
> > ylab("Annual Precipitation (in.) \n ") + xlab("")
> >
> > #make test fecal coliform plot
> > yfc_plot<-ggplot(yfc) + geom_boxplot() + aes(x=as.factor(year2), y=fc) +
> > opts(axis.text.x=theme_text(angle=45, hjust=1, vjust=1)) +
> > xlab(" \n Date") + ylab("Fecal coliforms (cfu/100 mL) \n ") +
> > geom_smooth(stat='smooth', aes(group=1), size=1.5) + scale_y_log10()
> >
> > #arrange plots together
> > grid.arrange(yp_plot, yfc_plot, ncol=1)
> >
> >
> > You can see that I got the plot areas to line up using grid.arrange(),
> but
> > the x-axes are still off.  I'd really appreciate any help I can get.
> >
> > Thanks,
> > Saalem
> >
> >       [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > R-help@r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
>
>

        [[alternative HTML version deleted]]

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