[R] plot many dfs in ggplot

[lily li]

Thanks. How to add an additional column, with the name of each dataframe's
name?

On Wed, Aug 3, 2016 at 1:06 PM, Ulrik Stervbo <ulrik.stervbo at gmail.com>
wrote:

> 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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