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RE: Kernel crash?
Jason, It crashes on Windows98 also. But why are you using All? Aren't the edge options principally for specifying the plot rendering? Are you actually going to plot a graph with 39,600 edges? I'm guessing that when you specify edge or vertex options, Combinatorica goes to much less efficient internal storage. If you want to plot a subset of the graph with graphics directives, you might want to try the CombinatoricaGraphics package from my web site below. It doesn't store the plotting information with the graph. I originally developed this packge for the old Combinatorica, which had serious graphics limitations. The newer Combinatorica that came with Version 4.2 has much better graphics. David Park djmp at earthlink.net http://home.earthlink.net/~djmp/ From: J. McKenzie Alexander [mailto:jalex at lse.ac.uk] To: mathgroup at smc.vnet.net Starting with a pure kernel, the following sequence of commands crashes the kernel on two different machines (an OS X box and an XP box): <<DiscreteMath`Combinatorica` MakeDirected[GridGraph[100,100],All]; yet, (also starting with a pure kernel) the following does not: <<DiscreteMath`Combinatorica` MakeDirected[GridGraph[100,100]]; Can others reproduce this? And, if so, does anyone have an idea what might be causing it? Cheers, Jason -- Dr J. McKenzie Alexander Department of Philosophy, Logic and Scientific Method London School of Economics and Political Science Houghton Street, London WC2A 2AE