Curved arrows
On Thu, Apr 30, 2009 at 2:37 PM, <p.s.chatfield at 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 G?bor Cs?rdi-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.chatfield at 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 at 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.Csardi at unil.ch> ? ? UNIL DGM
______________________________________________ R-help at 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.Csardi at unil.ch> UNIL DGM