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Apr
5
comment Why does the filling on my ListPlot not reach the axis for some values?
Didn't test but I suspect the Show. Set the final plot range in the ListPlot too, not just in Show, and set it to the same in all. Sorry if this doesn't help.
Apr
5
comment Don't understand why Mathematica is complaining about my Graph expression; how can I fix it?
Just as a clarification to my answer: I completely agree that to plot this in 3D, your solution should be used. It looks like 3D vertex coordinates are not documented so probably not supported in v9 ... when I said I believe this is a bug I was referring to the fact that Arrow[Tube[...]] doesn't work inside GraphicsComplex. That's a graphics bug, not a graph one.
Apr
5
comment Make FactorInteger print its result with CenterDot and Superscript?
I think it's not a good idea to try to do this. Modifying the builtin is definitely a bad idea. It's probably being used by other functions. There are some horror stories on this site about what happens when you modify builtins. About an analogue of the MatrixForm thing, the output is so generic that it's not really possible to detect that it came from FactorInteger. Just define your own function as ubpdqn said!
Apr
5
comment workbench: how to update JRE to 1.7
AFAIK Workbench doesn't bundle the JRE. It uses your system's Java. That said, this is not a Mathematica question. Workbench is just Eclipse, so you'll probably have better luck asking on a site where people are familiar with Java and Eclipse. You should also mention your OS.
Apr
4
comment Gray background in export pdf
@JeffDror Just use Help -> About, like in any other program ... but yes, that's 9.0.0, based on the date. You should upgrade to 9.0.1.
Apr
4
comment Gray background in export pdf
@JeffDror Do you have v9.0.0 or v9.0.1?
Apr
4
comment Gray background in export pdf
@JeffDror Do figure that out, try a different PDF viewer. Yes, the background of the PDF should be transparent, but I have never seen a viewer which shows gray there, so I find it unlikely.
Apr
4
comment Gray background in export pdf
I cannot reproduce this with M9.0.1 on Linux. Are you using a non-default style sheet in your notebook?
Apr
4
revised Social Network Analysis - Get the End Points of an Edge
edited tags
Apr
4
revised Don't understand why Mathematica is complaining about my Graph expression; how can I fix it?
edited tags
Apr
4
answered Don't understand why Mathematica is complaining about my Graph expression; how can I fix it?
Apr
3
comment Importing a Base64 encoded string
@d555 It could be anything, not just String. Base64 is considered an encoding just like gzip (which is also supported). Any file in any format can be encoded like this.
Apr
3
comment Using If statements internal to Table
@Bob2Alice Perhaps Table[If[Mod[k, 2] == 0, k, Unevaluated@Sequence[]], {k, 0, 10}] is clearer.
Apr
3
answered Importing a Base64 encoded string
Apr
2
comment Katz Centrality
There can be variation even in something as simple as the adjacency matrix of a directed graph. If an edge is said to be directed from $i \rightarrow j$, does that mean that in the adjacency matrix $A_{ij} = 1$ or that $A_{ji} = 1$? Don't assume, check!!
Apr
2
comment Katz Centrality
@sam84 I have not used Katz centrality, so I don't know much about the conventions in this case, but very often there is no such thing as a standard definition. Different authors might use different conventions. Different subfields might prefer different conventions. Especially for relatively new concepts like this one. This is why you should always check what convention your book or your software uses, and whether they agree. Mathematica has precise definitions for most things under the Details section of the documentation pages--check them!
Apr
2
comment Katz Centrality
If you want the most precise result, just use KatzCentrality and specify the working precision. WorkingPrecision -> Infinity will give you an exact result.
Apr
2
revised Network graph with lights not working
added 424 characters in body
Apr
2
comment Katz Centrality
If you expand "Details" in the documentation page of KatzCentrality, you will find the precise definition used by Mathematica. This differs from your definition in that it uses the transpose of the adjacency matrix. If your graph is directed, this will make a difference. Voting to close as this is due to a misunderstanding.
Apr
2
revised Katz Centrality
deleted 2 characters in body