Hi Dan, Sorry for the delay in response. You need to subscribe to post to the list and our list moderator was unavailable to check the queue... "Dan Bebber" <dan.bebber at="" plants.ox.ac.uk=""> writes: > Hello, > > when I apply johnson.all.pairs.sp to certain graphs, R hangs. > The R window can still be resized, minimized etc. and the "stop current > computation" button can be pressed (though nothing happens). > The computation can be interrupted by attempting to close R, then pressing > "cancel" when the "save workspace" dialogue opens. However, R then becomes > unstable and shuts down without warning. > The error also causes R to shut down occassionally. > I have this problem with 2 of 35 graphs I am analysing. Can you provide some details about the two graphs that cause the hanging behavior? Also, how long did you let things "hang"? Computing all pairs shortest paths can be computationally intensive for larger graphs. One possibility is that everything is working ok, but the calculation is taking longer than you would like. > I can provide an example of a test graph if anyone would be kind enough to > test this on their system. That would be great. Best, + seth

Li.Long at isb-sib.ch writes: > Along w/ Seth's reply, could you please update RBGL to 1.8.1? That's the > version that goes w/ R 2.3 release. The poster responded to me in private indicating that upgrading to the latest release resoleved his issues. + seth