I suggest using Triangle (offsite link) to mesh your data, then load the resultant undirected graph into the Graph module, then do whatever work needs to be done. Triangle will handle whatever challenges your data has, unless it doesn't, in which case you can clean up the data on the way in to Triangle. If you can't clean it up, you will have a research project on your hands.

This is an example where floating point numbers can be a problem. For example, consider three lines that intersect at a single point. Due to floating point errors, this tends to generate a tiny triangle instead of a single point intersection. Issues such as this are covered in the Triangle documentation.

---

---

• Are you posting in the right place? Check out Where do I post X? to know for sure.
• Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:

  <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>

• Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
• Want more info? How to link or How to display code and escape characters are good places to start.