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 thierry.onkel...@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: Gundala Viswanath [mailto:gunda...@gmail.com] Verzonden: woensdag 2 september 2009 14:47 Aan: ONKELINX, Thierry CC: r-h...@stat.math.ethz.ch 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<thierry.onkel...@inbo.be> 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 thierry.onkel...@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: Gundala Viswanath [mailto:gunda...@gmail.com] > Verzonden: woensdag 2 september 2009 14:33 > Aan: ONKELINX, Thierry > CC: r-h...@stat.math.ethz.ch > 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<thierry.onkel...@inbo.be> > 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 >> thierry.onkel...@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-boun...@r-project.org >> [mailto:r-help-boun...@r-project.org] >> Namens Gundala Viswanath >> Verzonden: woensdag 2 september 2009 12:10 >> Aan: r-h...@stat.math.ethz.ch >> 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. >> >> ______________________________________________ >> R-help@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. >> >> 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. ______________________________________________ R-help@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.
