On Oct 8, 2012, at 9:18 AM, David Winsemius wrote: > > On Oct 8, 2012, at 8:01 AM, Francesco wrote: > >> I think I have my answer... ggplot2 uses ecdf which does NOT allow >> weightings... >> so there is no warning or error, but still the resulting plot do not >> take into account the command weight=weight > > It was completely unclear why you expected ggplot to use ' ewcdf' when you > gave a command to use 'ecdf'.
You might want to look at stat_function. It appears designed to provide a mechanism for running data through functions that do not have current support in ggplot2. I've never really grok-ked how one is supposed to pass arguments into ggplot constructs and find the help pages not so helpful in figuring this out, so this is a big fat untested guess. -- David. > > >> >> Hope that helps someone, just in case ;-) >> >> On 8 October 2012 15:40, Francesco <caribou...@gmx.fr> wrote: >>> Dear all, >>> >>> I am trying to draw a weighted cumulative distribution (as defined >>> here http://rss.acs.unt.edu/Rdoc/library/spatstat/html/ewcdf.html) >>> with ggplot2 >>> >>> however the syntax >>> >>> temp<-qplot(X,weight=weight,data=data,stat = "ecdf", geom = >>> "step",colour=factor(year)) >>> >>> seems not to produce exactly the right figure (the values seems higher >>> at some points)... I am wrong in the weight definition? >>> >>> The data is like the following >>> >>> X Weight Year >>> 0 2 2001 >>> 0 1 2001 >>> 1 5 2001 >>> 2 1 2001 >>> 2 3 2001 >>> 2 2 2002 >>> 3.. etc >>> >>> Any ideas ? >>> Many thanks in advance >> >> ______________________________________________ >> 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. > > David Winsemius, MD > Alameda, CA, USA > > ______________________________________________ > 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. David Winsemius, MD Alameda, CA, USA ______________________________________________ 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.
