Re: A newbee to Mathematica

*To*: mathgroup at smc.vnet.net*Subject*: [mg97203] Re: [mg97170] A newbee to Mathematica*From*: Murray Eisenberg <murray at math.umass.edu>*Date*: Sun, 8 Mar 2009 05:49:49 -0500 (EST)*Organization*: Mathematics & Statistics, Univ. of Mass./Amherst*References*: <200903070737.CAA16881@smc.vnet.net>*Reply-to*: murray at math.umass.edu

I don't understand the line of code that begins: g[FromAdjacencyMatrix[am, EdgeWeight], ... Nishant wrote: > Hi I have just started using mathematica,and therefore have a very silly question that needs an answer. > I am trying to run this: > Needs["GraphUtilities`"] > Needs["Combinatorica`"] > am = {{1, 0, 1, 2, 0, 1, 2}, {0, 0, 0, 0, 1, 1, 1}, {1, 0, 0, 1, 1, 1, > 1}, {0, 3, 1, 4, 1, 0, 1}, {0, 1, 1, 1, 0, 1, 0}, {1, 1, 1, 0, 1, > 0, 0}, {1, 1, 5, 1, 0, 0, 0}}; > > MatrixForm[am] > g[FromAdjacencyMatrix[am, EdgeWeight], VertexLabeling -> True, > EdgeLabeling -> True] > GraphPlot3D[g] > I am getting this error message: > GraphPlot3D::grph:Graph:<11,7,Undirected> is not a valid graph. > > BASICALLY what I want to do is to generate a 3d graph from a given adjacency matrix,with the elements of the matrix showing the weights of each edge as is provided in FromAdjacencyMatrix[g,Edgeweight] > > Thank you for helping me out > -- Murray Eisenberg murray at math.umass.edu Mathematics & Statistics Dept. Lederle Graduate Research Tower phone 413 549-1020 (H) University of Massachusetts 413 545-2859 (W) 710 North Pleasant Street fax 413 545-1801 Amherst, MA 01003-9305

**References**:**A newbee to Mathematica***From:*Nishant <voneur@gmail.com>