[ggplot2] Densityplot, grouping and NAs
Dear Bernd, If only one variable is causing this problem you could make a subset on that variable. data = mydf[!is.na(mydf$g), ] 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: Bernd Weiss [mailto:bernd.weiss at uni-koeln.de] Verzonden: woensdag 25 maart 2009 11:10 Aan: ONKELINX, Thierry; r-help at r-project.org Onderwerp: Re: [R] [ggplot2] Densityplot, grouping and NAs ONKELINX, Thierry schrieb:
Dear Bernd, Omitting the NA values from the dataset will work. ggplot(aes(x = x, color = g), data = na.omit(mydf)) + geom_density()
Dear Thierry,
thanks for your reply! Of course, regarding my little toy example
na.omit() perfectly works. However, my real data set consists of
hundreds of variables. So, one has to write
... data = na.omit(myHugeDataset[,c("var1","var99","var208")]) ...
Bernd
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