This code work without errors for me.
library(ggplot2)
dat <- read.table("http://dpaste.com/88561/plain/";)
ggplot(dat, aes(x = V1, colour = factor(V2))) + geom_density()
ggplot(dat, aes(x = V1, fill = factor(V2))) + geom_density(alpha = 0.5)
Have a look at table(dat$V2). Some classes have only 1 or 2 values, which in
not enough to estimate the density. Therefore you get an error with
ggplot(dat, aes(x = V1)) + geom_density() + facet_wrap(~V2)
Subsetting the data solves the problem
ggplot(subset(dat, V2 <= 2), aes(x = V1)) + geom_density() + facet_wrap(~V2)
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
[email protected]
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: Gundala Viswanath [mailto:[email protected]]
Verzonden: woensdag 2 september 2009 14:54
Aan: ONKELINX, Thierry
CC: [email protected]
Onderwerp: Re: [R] Howto Superimpose Multiple Density Curves Into One Plot
> str(dat)
'data.frame': 200 obs. of 2 variables:
$ V1: num 0.98 0.19 1.09 0.21 0.26 0.98 0.31 0.88 0.23 0.2 ...
$ V2: int 1 0 1 0 0 1 0 1 0 0 ...
> summary(dat)
V1 V2
Min. :0.0000 Min. :0.000
1st Qu.:0.1600 1st Qu.:0.000
Median :0.2950 Median :0.000
Mean :0.7108 Mean :0.635
3rd Qu.:1.0600 3rd Qu.:1.000
Max. :5.4400 Max. :5.000
- G.V.
On Wed, Sep 2, 2009 at 9:50 PM, ONKELINX, Thierry<[email protected]>
wrote:
> My orginal code should work with those colnames. Note that you must not use
> "variable.name" but just variable.name.
>
> I guess that somethings wrong with your dataframe. What does str(dat) and
> summary(dat) gives?
>
> 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 [email protected]
> 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: Gundala Viswanath [mailto:[email protected]]
> Verzonden: woensdag 2 september 2009 14:47
> Aan: ONKELINX, Thierry
> CC: [email protected]
> Onderwerp: Re: [R] Howto Superimpose Multiple Density Curves Into One
> Plot
>
> Hi Thierry,
>
> I am sorry for coming back to you.
> Maybe I misunderstood you, but I got this:
>
>> colnames(dat)
> [1] "V1" "V2"
>> ggplot(dat, aes(x = "V1", colour = factor("V2"))) + geom_density()
> Error in data.frame(..., check.names = FALSE) :
> arguments imply differing number of rows: 1, 200
>
>> ggplot(dat, aes(x = V1, colour = factor(V2))) + geom_density()
> Error in density.default(data$x, adjust = adjust, kernel = kernel, weight =
> data$weight, :
> need at least 2 points to select a bandwidth automatically
>
>
> - G.V
>
> On Wed, Sep 2, 2009 at 9:35 PM, ONKELINX, Thierry<[email protected]>
> wrote:
>> It looks like the data has other columnnames than the samplecode you
>> provided.
>>
>> Use colnames(dat) to get the columnnames. Replace V1 with the columnname of
>> the values and V2 with the column name of the ID's.
>>
>> 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
>> [email protected] 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: Gundala Viswanath [mailto:[email protected]]
>> Verzonden: woensdag 2 september 2009 14:33
>> Aan: ONKELINX, Thierry
>> CC: [email protected]
>> Onderwerp: Re: [R] Howto Superimpose Multiple Density Curves Into One
>> Plot
>>
>> Hi Thierry,
>>
>> Thanks for the reply. I tried this:
>>> dat <- read.table("http://dpaste.com/88561/plain/";)
>>
>> But I got such error:
>>
>>> ggplot(dat, aes(x = V1, colour = factor(V2))) + geom_density()
>> Error in density.default(data$x, adjust = adjust, kernel = kernel, weight =
>> data$weight, :
>> need at least 2 points to select a bandwidth automatically
>>> ggplot(dat, aes(x = V1, fill = factor(V2))) + geom_density(alpha =
>>> 0.2)
>> Error in density.default(data$x, adjust = adjust, kernel = kernel, weight =
>> data$weight, :
>> need at least 2 points to select a bandwidth automatically
>>> ggplot(dat, aes(x = V1)) + geom_density() + facet_wrap(~V2)
>> Error: could not find function "facet_wrap"
>>>
>>> ggplot(dat, aes(x = V1, fill = factor(V2))) + geom_density(alpha =
>>> 0.2)
>> Error in density.default(data$x, adjust = adjust, kernel = kernel, weight =
>> data$weight, :
>> need at least 2 points to select a bandwidth automatically
>>> ggplot(dat, aes(x = V1)) + geom_density() + facet_wrap(~V2)
>> Error: could not find function "facet_wrap"
>>
>> Maybe I miss something? What could possibly go wrong?
>>
>> - Edward
>>
>>
>> On Wed, Sep 2, 2009 at 8:30 PM, ONKELINX, Thierry<[email protected]>
>> wrote:
>>> Have a look at the ggplot2 package.
>>>
>>> library(ggplot2)
>>> dat <- read.table("mydat.txt")
>>> ggplot(dat, aes(x = V1, colour = factor(V2))) + geom_density() #or a
>>> few alternatives ggplot(dat, aes(x = V1, fill = factor(V2))) +
>>> geom_density(alpha = 0.2) ggplot(dat, aes(x = V1)) + geom_density()
>>> +
>>> facet_wrap(~V2)
>>>
>>> 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
>>> [email protected] 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: [email protected]
>>> [mailto:[email protected]]
>>> Namens Gundala Viswanath
>>> Verzonden: woensdag 2 september 2009 12:10
>>> Aan: [email protected]
>>> Onderwerp: [R] Howto Superimpose Multiple Density Curves Into One
>>> Plot
>>>
>>> I have a data that looks like this:
>>> http://dpaste.com/88561/plain/
>>>
>>> And I intend to create multiple density curve into one plot, where
>>> each curve correspond to the unique ID.
>>>
>>> I tried to use "sm" package, with this code, but without success.
>>>
>>> __BEGIN__
>>> library(sm)
>>> dat <- read.table("mydat.txt");
>>> plotfn <- ("~/Desktop/flowgram_superimposed.pdf");
>>> pdf(plotfn);
>>>
>>> sm.density.compare(dat$V1,dat$V2, xlab = "Flow Signal") colfill <-
>>> c(2:10); legend(locator(1), levels(dat$V2), fill=colfill)
>>>
>>> dev.off();
>>> __END__
>>>
>>> Please advice what's the right way to do it or if there is
>>> alternative way to do it?
>>> I am trying to get this kind of figure:
>>> http://img524.imageshack.us/img524/2736/testl.png
>>>
>>>
>>> - G.V.
>>>
>>> ______________________________________________
>>> [email protected] 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.
>>>
>>> Druk dit bericht a.u.b. niet onnodig af.
>>> Please do not print this message unnecessarily.
>>>
>>> Dit bericht en eventuele bijlagen geven enkel de visie van de
>>> schrijver weer en binden het INBO onder geen enkel beding, zolang
>>> dit bericht niet bevestigd is door een geldig ondertekend document.
>>> The views expressed in this message and any annex are purely those
>>> of the writer and may not be regarded as stating an official
>>> position of INBO, as long as the message is not confirmed by a duly signed
>>> document.
>>>
>>
>> Druk dit bericht a.u.b. niet onnodig af.
>> Please do not print this message unnecessarily.
>>
>> Dit bericht en eventuele bijlagen geven enkel de visie van de
>> schrijver weer en binden het INBO onder geen enkel beding, zolang dit
>> bericht niet bevestigd is door een geldig ondertekend document. The
>> views expressed in this message and any annex are purely those of
>> the writer and may not be regarded as stating an official position of
>> INBO, as long as the message is not confirmed by a duly signed document.
>>
>
> Druk dit bericht a.u.b. niet onnodig af.
> Please do not print this message unnecessarily.
>
> Dit bericht en eventuele bijlagen geven enkel de visie van de
> schrijver weer en binden het INBO onder geen enkel beding, zolang dit
> bericht niet bevestigd is door een geldig ondertekend document. The
> views expressed in this message and any annex are purely those of the
> writer and may not be regarded as stating an official position of
> INBO, as long as the message is not confirmed by a duly signed document.
>
Druk dit bericht a.u.b. niet onnodig af.
Please do not print this message unnecessarily.
Dit bericht en eventuele bijlagen geven enkel de visie van de schrijver weer
en binden het INBO onder geen enkel beding, zolang dit bericht niet bevestigd is
door een geldig ondertekend document. The views expressed in this message
and any annex are purely those of the writer and may not be regarded as stating
an official position of INBO, as long as the message is not confirmed by a duly
signed document.
______________________________________________
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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.
