[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [igraph] changing widht and height of the igraph

From: Gábor Csárdi
Subject: Re: [igraph] changing widht and height of the igraph
Date: Tue, 9 Oct 2012 13:15:00 -0400

To make this clear, the problem I think is probably not with the size
of the PNG image, because that should be 1200x600 pixels, although
your code snipplet has some typos, e.g. quotes are missing around

So I think the question is about how to produce an igraph layout on a
rectangle, instead of a square or disc. I don't think we have any
layout algorithm that supports that, unfortunately. (But I might be
wrong, I haven't look over all of them now.) The force directed
algorithms typically just place the vertices "somewhere" on a plane,
and then because of symmetries, the vertices are typically within a

Another thing is that igraph rescales the results of the layout
algorithm to the [-1,1] x [-1,1] box, and by default uses an aspect
ratio of one. To change this behavior, you can set 'rescale=FALSE' and
'asp=0' when plotting the graph. You'll likely need to set 'xlim' and
'ylim' as well in this case.


On Tue, Oct 9, 2012 at 10:26 AM, Mike Dylan <address@hidden> wrote:
> I need to write the output of the igraph to a .png file, I am doing this:
> png(network.png height=600, width=1200)
>   plot(g, layout = layout.fruchterman.reingold,  vertex.label = V(g)$name,
> vertex.label.color= "navyblue",  edge.arrow.size=0.9,  edge.curved=T,
> edge.label=t$count, edge.label.color="darkblue",
> edge.label.font=12,vertex.shape="circle", vertex.label.dist=0,
> edge.color="darkgreen", vertex.label.cex=1, vertex.label.font=3, main="Web
> servers Diagram"))
> I still get the same size of image. Depending of the number of nodes (number
> of rows), I like to change the size of the image. Is there option to chnage
> the size of the image in igraph?
> _______________________________________________
> igraph-help mailing list
> address@hidden
> https://lists.nongnu.org/mailman/listinfo/igraph-help

Gabor Csardi <address@hidden>     MTA KFKI RMKI

reply via email to

[Prev in Thread] Current Thread [Next in Thread]