Just a left handed approach. I would select a point in a third dimension over the center of my sales rep grid, calculate the distance to each sales rep and store the results in an array as a cross reference.

e.g. dist from 3rd dim | map coordinates
20 | 0,0
15 | 1,2

sort this array by distance.

Now any destination you choose on the grid can be have it's distance calculated from the 3rd dimension point. A binary search of the sorted cross reference for distances equal to, or just above and below your destination distance should give you your top choices.

This assumes of course you have enough data to make the set up worth the effort and that the sales reps are based from the same place repeatedly. HTH!

---

---

• 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.