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Asked: 2026-05-26T06:02:31+00:00

I’ve been playing around with Mathematica’s visualization and webcrawling capabilities. Building on some demonstration

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I’ve been playing around with Mathematica’s visualization and webcrawling capabilities. Building on some demonstration code, I’m able to visualize the a network. Here’s an example on a university webpage:

webcrawler[rooturl_, depth_] :=
  Flatten[Rest[NestList[
       Union[Flatten[Thread[# -> Import[#,"Hyperlinks"]] & /@ Last /@ #]] &, 
       {"" -> rooturl}, depth]]];

Graph[webcrawler[
  "http://www.yorku.ca/", 2], {ImageSize -> Full}]

However, I’ve been trying fruitlessly to figure out a way to apply EdgeLabels[] to this Graph[] command. I would like to have each link written on each line, just to give a sense of what exactly the link clusters represent.

I’ve tried applying a generated list of the Hyperlink connections to it, which didn’t work, and neither did any of the readily obvious commands from documentation/elsewhere on stack/the cookbook.

I envision a very cluttered output.

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1 Answer

  1. Editorial Team

    I don’t know in case of a large graph how will the edge label look. But here how it can be done in Mathematica 8.

    webcrawler[rooturl_, depth_] := 
Flatten[Rest[
NestList[
 Union[Flatten[
    Thread[# -> Import[#, "Hyperlinks"]] & /@ 
     Last /@ #]] &, {"" -> rooturl}, depth]]];
dats = webcrawler["http://www.uni-kl.de/", 2];
Graph[dats ,EdgeLabels ->Table[dats[[i]] -> dats[[i]][[2]],
{i,Length[dats]}], {ImageSize -> Full}]

    enter image description here
    I hope this helps.

    BR

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