[R] how to plot annual values directly

PIKAL Petr petr.pikal at precheza.cz
Thu Aug 4 08:36:31 CEST 2016


Hi

Other option is aggregate or ave, depending on how do you want to plot mean/sum values.

You should think about posting an example of what do you have and what do you want to achieve (at least partly). Without that we are just guessing your real intention.

Cheers
Petr

From: Ulrik Stervbo [mailto:ulrik.stervbo at gmail.com]
Sent: Wednesday, August 3, 2016 9:03 PM
To: lily li <chocold12 at gmail.com>; PIKAL Petr <petr.pikal at precheza.cz>
Cc: R mailing list <r-help at r-project.org>
Subject: Re: [R] how to plot annual values directly

You could use dplyr:

library(plyr)
ddply(df, .variables = "year", summarise, mean.precip = mean(precip))

Hope this helps
Ulrik


On Wed, 3 Aug 2016 at 17:29 lily li <chocold12 at gmail.com<mailto:chocold12 at gmail.com>> wrote:
I meant that my dataframe has daily data, but how to plot annual mean/sum
directly? Thanks.

On Wed, Aug 3, 2016 at 4:16 AM, PIKAL Petr <petr.pikal at precheza.cz<mailto:petr.pikal at precheza.cz>> wrote:

> Hi
>
> What do you mean to plot annual mean/sum directly? You can compute it by
> aggregate function and add it to your plot, but I am not sure if it is
> enough direct.
>
> Cheers
> Petr
>
> > -----Original Message-----
> > From: R-help [mailto:r-help-bounces at r-project.org<mailto:r-help-bounces at r-project.org>] On Behalf Of lily li
> > Sent: Tuesday, August 2, 2016 8:10 PM
> > To: R mailing list <r-help at r-project.org<mailto:r-help at r-project.org>>
> > Subject: [R] how to plot annual values directly
> >
> > Hi R users,
> >
> > I have a dataframe, with daily precipitation data, is it possible to
> plot annual
> > mean or annual sum values directly? Thanks for your help.
> >
> > df
> > year   month   day   precip       time
> > 2010     1          1        0.5     2010-01-01
> > 2010     1          2        0.8     2010-01-02
> > 2010     1          3        1.0     2010-01-03
> > 2010     1          4        0.9     2010-01-04
> > ...
> >
> > fig1 = ggplot()+ geom_path(data=df, aes(x=time, y= precip)
> > show(fig1)
> >
> >       [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > R-help at r-project.org<mailto:R-help at r-project.org> mailing list -- To UNSUBSCRIBE and more, see
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide http://www.R-project.org/posting-
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> > and provide commented, minimal, self-contained, reproducible code.
>

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