Dr. belisarius
Reputation
99,573
973/1000 score
 Oct 15 answered Extending the dimension of matrix and manipulating it Oct 15 revised Extending the dimension of matrix and manipulating it added 22 characters in body Oct 14 answered Need help getting the intercept of two lines in a ContourPlot Oct 14 comment Upper bound “Vicious nearest neighbour” algorithm suggestions @martin As it's an hexagonal lattice I get equal distances indeed. That's the main idea. Then I choose the neighbor so to minimize the kills. Twelve out of sixteen alive here (if I counted them right) !Mathematica graphics Oct 14 answered Vertex descendants subgraph Oct 14 comment StreamPlot, ListStreamPlot does not visualize vector field properly just un-accept the accepted answer there if it doesn't solve the problem and edit the question to clarify it Oct 14 comment StreamPlot, ListStreamPlot does not visualize vector field properly You aren't "reopening" your old question. Seems you're posting almost a dup Oct 14 comment Upper bound “Vicious nearest neighbour” algorithm suggestions Aren't the optimal arrangements like this? !Mathematica graphics Oct 14 comment How to instruct MatrixLog to work with singular matrices? Welcome to Mathematica.SE! I suggest the following: 0) Browse the common pitfalls question 1) As you receive help, try to give it too, by answering questions in your area of expertise. 2) Read the faq! 3) When you see good questions and answers, vote them up by clicking the gray triangles, because the credibility of the system is based on the reputation gained by users sharing their knowledge. Also, please remember to accept the answer, if any, that solves your problem, by clicking the checkmark sign! Oct 14 comment How to instruct MatrixLog to work with singular matrices? @Pillsy n = 5; m = Partition[Range[n^2], n]; NullSpace[m] Oct 14 comment Scan appears to work setting graph properties, but get error on property-read @Paul_A MMa doesn't swallow it silently here Oct 14 revised Why doesn't NDSolve notice the unknown variable inside the equation? deleted 14 characters in body Oct 14 revised How to display results of NDSolve edited body Oct 14 comment Scan appears to work setting graph properties, but get error on property-read Scan[(PropertyValue[{g, #[[1]] <-> #[[2]]}, EdgeWeight] = #[[1]] + #[[2]]) &, {{1, 2}}] Oct 14 comment Scan appears to work setting graph properties, but get error on property-read @Paul_A Thanks. Something went bad in the copy/paste. Yours have a misplaced ) and an spurious & Oct 14 revised Scan appears to work setting graph properties, but get error on property-read deleted 1 character in body Oct 14 comment How to display results of NDSolve @Pygmalion Yes, NDSolve returns replacement rules that are a fundamental Mathematica construct. You just don't need them in this case. Oct 14 comment Scan appears to work setting graph properties, but get error on property-read Check your syntax :) Oct 14 revised Scan appears to work setting graph properties, but get error on property-read deleted 11 characters in body Oct 14 answered Scan appears to work setting graph properties, but get error on property-read