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Professor and Director, Division of Biomedical Informatics University of Kentucky


May
8
comment Labeling individual curves in Mathematica
Mathematica 9 is nicer, but legends of this type violate the proximity-compatibility principle, making it harder for the viewer to determine which label goes with which line. It is best, when possible, to put the labels at the end of each line as shown in one of the solutions above. This also increases the data-ink ratio, because it eliminates the (now) redundant lines and symbols that are present when you use PlotLegends.
Jan
20
awarded  Nice Question
Nov
13
accepted Why is NeighborhoodGraph so slow?
Nov
13
asked Why is NeighborhoodGraph so slow?
Nov
6
accepted Threading over a list of lists of lists and a list of atomic expressions
Nov
6
comment Threading over a list of lists of lists and a list of atomic expressions
I understand now. This also explains why Rule works, unlike appendTo: when Rule is evaluated it expands to an expression that when operated on by Thread produces the result shown above.
Nov
5
awarded  Nice Question
Nov
5
asked Threading over a list of lists of lists and a list of atomic expressions
May
6
awarded  Teacher
May
6
awarded  Scholar
May
6
accepted How do I get VertexList to work directly on older graphs defined using rules?
May
6
comment How do I get VertexList to work directly on older graphs defined using rules?
Thanks. This problem was costing my student and I minutes to hours each time it happened.
May
6
awarded  Supporter
May
6
comment How do I get VertexList to work directly on older graphs defined using rules?
I suspect that something, somewhere is adding a global definition for VertexList that is then getting used for lists. I'm just not sure what it is, because every time I've had this problem I start to modify code, then suddenly find that the VertexList starts working with the older graphs again.
May
6
revised How do I get VertexList to work directly on older graphs defined using rules?
added 14 characters in body
May
5
revised How do I get VertexList to work directly on older graphs defined using rules?
Added additional information on ?VertexList
May
5
comment How do I get VertexList to work directly on older graphs defined using rules?
Sorry. The graphs I'm using have labels and are often multigraphs. And I know that I can do a number of things to get a VertexList from these kinds of graphs, but my question is really about why VertexList seems to work directly with these graphs (and yet is not colored Red) and why it sometimes doesn't. Perhaps I'm doing something strange with loading GraphUtilities or with $ContextPath. At this point, I cannot get back to where this is working again, but I have seen it happen several times in the past.
May
5
comment How do I get VertexList to work directly on older graphs defined using rules?
This works for graphs without edge labels, but I've got a lot of code that was working without this approach before I restarted Mathematica and most of my graphs have edge labels, as in:{{a-> b, "on"}}
May
5
asked How do I get VertexList to work directly on older graphs defined using rules?
May
4
answered Speeding up mathematica by subsitituting numerical values