[R] Problem on plotting TS using GGPLOT
Bogaso
bogaso.christofer at gmail.com
Fri Sep 25 15:58:08 CEST 2009
Thanks Gabor for your input. However I know there is option in "zoo" to plot
multiple time series. However I want to go with ggplot2 because it looks
better. If anyone point me where is the problem in my ggplot2 code, I would
be truly grateful.
Thanks,
Gabor Grothendieck wrote:
>
> First get the correct representation which here would be a multivariate
> zoo series with 51 time points and 6 components series and then plot it
> using zoo's plot function:
>
> z <- zoo(matrix(dat, 51), time(dat2))
>
> # all in one panel
> plot(z, pch = letters[1:6], screen = 1, type = "b", col = 1:6)
>
> # or in separate panels (same but omit screen = 1)
> plot(z, pch = letters[1:6], type = "b", col = 1:6)
>
> There are many examples of plotting zoo series in the 3 vignettes that
> come with zoo and also in ?plot.zoo and ?xyplot.zoo
>
> If you wish to use ggplot2 you can extract the data and times
> into a new data frame and use that data frame for further computation.
>
> DF <- cbind(tt = time(z), as.data.frame(z))
>
>
> On Fri, Sep 25, 2009 at 9:32 AM, Bogaso <bogaso.christofer at gmail.com>
> wrote:
>>
>> Thanks for this reply. Here my goal is to plot multiple time series in
>> the
>> same plotting window. Here y variable has 306 elements, however each
>> value
>> is associated with factor which is represented by "vv" variable.
>>
>> I want to plot total 6 time series, for example 1st 51 values of y,
>> represented by "a" should be treated as single TS, with index as index of
>> "dat2".....................similarly 2nd 51 values of y, represented by
>> "b"
>> should be treated as another single TS, with index as index of
>> "dat2"...........and so on.
>>
>> What is the problem here?
>>
>> Thanks,
>>
>>
>>
>> ONKELINX, Thierry wrote:
>>>
>>>
>>> You are mixing data from two datasets with different lengths. Your x
>>> variable has 51 elements, while the y variable has 306 elements? What
>>> did you expect to happen with that?
>>>
>>> Use only one dataset within a geom(). Otherwise you are likely the get
>>> in troubles.
>>>
>>> HTH,
>>>
>>> Thierry
>>>
>>>
>>> ------------------------------------------------------------------------
>>> ----
>>> ir. Thierry Onkelinx
>>> Instituut voor natuur- en bosonderzoek / Research Institute for Nature
>>> and Forest
>>> Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,
>>> methodology and quality assurance
>>> Gaverstraat 4
>>> 9500 Geraardsbergen
>>> Belgium
>>> tel. + 32 54/436 185
>>> Thierry.Onkelinx at inbo.be
>>> www.inbo.be
>>>
>>> To call in the statistician after the experiment is done may be no more
>>> than asking him to perform a post-mortem examination: he may be able to
>>> say what the experiment died of.
>>> ~ Sir Ronald Aylmer Fisher
>>>
>>> The plural of anecdote is not data.
>>> ~ Roger Brinner
>>>
>>> The combination of some data and an aching desire for an answer does not
>>> ensure that a reasonable answer can be extracted from a given body of
>>> data.
>>> ~ John Tukey
>>>
>>> -----Oorspronkelijk bericht-----
>>> Van: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
>>> Namens bogaso.christofer
>>> Verzonden: vrijdag 25 september 2009 14:47
>>> Aan: R-help at stat.math.ethz.ch
>>> Onderwerp: [R] Problem on plotting TS using GGPLOT
>>>
>>> Hi, I have following codes :
>>>
>>>
>>>
>>>
>>>
>>> library(zoo); library(ggplot2); library(plyr)
>>>
>>>
>>>
>>>
>>>
>>> dat <- rnorm(306); vv <- letters[1:6]; dat1 <- data.frame(dat, vv)
>>>
>>> dat2 = zooreg(rnorm(51), as.yearmon(as.Date("2000-01-01")),
>>> frequency=12)
>>>
>>>
>>>
>>> ggplot(dat1) +
>>>
>>> geom_line(aes(y=dat, x=index(dat2), colour=vv), group=vv,
>>> size =
>>> 1.3)
>>>
>>>
>>>
>>>
>>>
>>> However I got error while plotting them :
>>>
>>> Error in data.frame(x = c(2000, 2000.08333333333, 2000.16666666667,
>>> 2000.25,
>>> :
>>>
>>> arguments imply differing number of rows: 51, 306
>>>
>>>
>>>
>>> I could not find why that error is coming. Any idea please ?
>>>
>>>
>>>
>>> Thanks,
>>>
>>>
>>> [[alternative HTML version deleted]]
>>>
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>>
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>>
>> ______________________________________________
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>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>
> ______________________________________________
> R-help at 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.
>
>
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