[R] plot many dfs in ggplot

[Ulrik Stervbo]

Not quite - this works: rbind(df1, df2, df3, df1, df2, df3)

Or if the have your data.frames in a list, use do.call:

df.lst <- list(df1, df2, df3, df1, df2, df3)
do.call(rbind, df.lst)

You might take a look at the facet functionality in ggplot once you are
ready to build your plots.

Best,
Ulrik

On Wed, 3 Aug 2016 at 17:42 lily li <chocold12 at gmail.com> wrote:

> Thanks, but rbind/merge function only combines two dataframes each time,
> how to work on multiple dataframes? Thanks again.
>
>
> On Wed, Aug 3, 2016 at 4:20 AM, PIKAL Petr <petr.pikal at precheza.cz> wrote:
>
> > Hi.
> >
> > Hm. I would add a column indicating data frame and merge/rbind all data
> > frames.
> >
> > Something like
> >
> > df1$fr <- 1
> > df2$fr <- 2
> >
> > dfkompl <- rbind(df1, df2)
> >
> > ggplot(dfkompl, aes(x=time, y=varA, colour=factor(fr))
> >
> > Cheers
> > Petr
> >
> >
> > > -----Original Message-----
> > > From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of lily
> li
> > > Sent: Tuesday, August 2, 2016 8:51 PM
> > > To: R mailing list <r-help at r-project.org>
> > > Subject: [R] plot many dfs in ggplot
> > >
> > > Hi all,
> > >
> > > I have another question. There are several dataframes, each has the
> same
> > > columns: time, varA, varB, varC, etc. If I want to plot time ~ varA of
> > each
> > > dataframe, where different dataframe names use different colors. How to
> > > do this in ggplot? Thanks for your help.
> > >
> > > Right now, I tried to use the code below, but very laborious, and needs
> > colors
> > > manually.
> > >
> > > fig1 = ggplot()+
> > >     geom_path(data=df1, aes(x=time, y= varA, color= 'df1'))+
> > >     geom_path(data=df2, aes(x=time, y= varA, color= 'df2'))+
> > >     geom_path(data=df3, aes(x=time, y= varA, color= 'df3'))+
> > >     ...
> > >     scale_color_manual('', limits=c('df1', 'df2', 'df3', ...),
> > values=c('blue', red',
> > > 'green', ...))
> > > show(fig1)
> > >
> > >       [[alternative HTML version deleted]]
> > >
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