On Thu, Apr 30, 2009 at 2:37 PM, <
[hidden email]> 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
>> <
[hidden email]> 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.
>>>
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https://stat.ethz.ch/mailman/listinfo/r-help>>> PLEASE do read the posting guide
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>>
>>
>>
>> --
>> Gabor Csardi <
[hidden email]> UNIL DGM
>>
>> ______________________________________________
>>
[hidden email] 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 <
[hidden email]> UNIL DGM
______________________________________________
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