I think I found a way forward - may not be perfect, but works for the
time being.
It looks like pin only works with neato and fdp - see
http://www.graphviz.org/doc/info/attrs.html#d:pin
So I added layout='neato' to graph_draw, and that seems to do the trick.
Unfortunately, the canvas size seems to change (even though I specified
size=(15,15) for the initial layout and for the later call). My current
workaround is to simply redraw the graph with neato and overwrite the
output file.
One thing that suprised me is that pinning doesn't make things any
faster. My network has almost 10000 nodes - does it really take most of
the time to create output rather than performing the actual layout?
Cheers,
Steffen
On 08/08/11 16:28, Sebastian Weber wrote:
This might not be very helping, but I gave up back then, when I had the
problem. A solution would be great though…
Cheers
Am 08.08.2011 um 16:20 schrieb Steffen Schaper:
Hi,
I am quite new to graph-tool and mostly use it for drawing at the moment.
Thanks Tiago for all the great work you put into graph-tool!
Apologies for hijacking this thread - I hope this okay as my question is
basically the same that Sebastian had.
Tiago Peixoto wrote:
Theses colors would need to be transparent and the graph layout must
match in each drawing.
Transparent colors are no problem, as well as matching the layout (you
just need to pass the 'pos' parameter, and set 'pin=True' so that the
positions remain fixed).
That's exactly what I tried, but for me, every time I call gt.graph_draw, I
get a new layout.
Here's my code:
#create network and properties...
#first plot. this works fine
positions = gt.graph_draw(network, vcolor=colorProperties, vcmap=colorMap,
vnorm=False, vorder=plotOrder, output='out0.png')
# change a few values in colorProperties and plotOrder
# now draw again
gt.graph_draw(network,pos=positions,pin=True,vcolor=colorProperties,vcmap=colorMap,vnorm=False,output='out1.png')
--
However, what happens is that the graph gets a new layout which is distinct
from the first one. Is there something I missed? I also tried to add
vprops={'pin':'True} to the second call of graph_draw, but that didn't help
either.
I'm on Ubuntu 11.04, graph-tool version 2.2.14 (commit 39b848dc, Sat Jul 9
00:53:56 2011 +0200) [from ppa], graphviz version 2.26.3.
Cheers,
Steffen
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