On Thu, Apr 30, 2009 at 2:37 PM, <p.s.chatfi...@rdg.ac.uk> wrote: > Hey - I tried this without success. The igraph doesn't work with R 2.9.0,
That is strange, why not? > so I'm using it with the 2.8.0 version which is the previous one I had. Can > you write a simple code that would put an arrow with a curved shaft on, e.g > plot(3,5) > igraph.Arrows(3,4,4,5) Exactly like this, but the function is not exported, and you need the 'curved' argument: plot(3,5) igraph:::igraph.Arrows(3,4,4,5) igraph:::igraph.Arrows(3,4,4,5, curved=TRUE) igraph:::igraph.Arrows(3,4,4,5, curved=-0.5) igraph:::igraph.Arrows(3,4,4,5, curved=-1) igraph:::igraph.Arrows(3,4,4,5, curved=1) You need igraph version 0.5.2 for this I think. Type head(igraph:::igraph.Arrows) to see the other arguments to play with. Gabor > Thanks for your quick reply before that was much appreciated, > > Paul > > Gábor Csárdi-2 wrote: >> >> Paul, >> >> there might be other solutions as well, but there is an internal >> function in the igraph package that can draw curved arrows, it is >> called igraph:::igraph.Arrows(). As it is an internal function, it is >> not documented, but I think it is pretty straightforward to use. For >> the 'curved' argument you can give a number, try values between 0 and >> 1, or (if I remember well) -1 and 0 if you want it to curve towards >> the opposite side. >> >> Best, >> Gabor >> >> On Thu, Apr 30, 2009 at 10:57 AM, Paul Chatfield >> <p.s.chatfi...@rdg.ac.uk> wrote: >>> >>> I'm trying to draw an arrow with a curved shaft on the graph as a >>> straight >>> one looks messy on a detailed graph. I've looked in arrows but it >>> doesn't >>> seem to give an option. larrows doesn't look much more promising. I had >>> a >>> look in the archive and couldn't find anything. Any thoughts? >>> >>> Thanks >>> >>> Paul >>> -- >>> View this message in context: >>> http://www.nabble.com/Curved-arrows-tp23312316p23312316.html >>> Sent from the R help mailing list archive at Nabble.com. >>> >>> ______________________________________________ >>> 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. >>> >> >> >> >> -- >> Gabor Csardi <gabor.csa...@unil.ch> UNIL DGM >> >> ______________________________________________ >> 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. >> >> > Quoted from: http://www.nabble.com/Curved-arrows-tp23312316p23312605.html > > -- Gabor Csardi <gabor.csa...@unil.ch> UNIL DGM ______________________________________________ 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.