Determine approximate centroids of PLSS sections

[caleb87]

I want to determine the point that is .0018 lat/lon (roughly a 1/10 mile) within the interior of different polygons at each veritces. It doesn't have to be precise, but I really just need to ensure it is within the polygon. The blue dots represent approximate coordinates I want.

 

The google maps points I used for the L shaped polygon:

 var polygon1 = [

    new google.maps.LatLng(48.110073077,-102.568801362),

    new google.maps.LatLng(48.124993054,-102.568801526),

    new google.maps.LatLng(48.124573268,-102.547401948),

    new google.maps.LatLng(48.124603482,-102.525802378),

    new google.maps.LatLng(48.110173554,-102.52560225),

    new google.maps.LatLng(48.095623624,-102.525702115),

    new google.maps.LatLng(48.09563336,-102.547381656),

    new google.maps.LatLng(48.110123313,-102.547401802),

    new google.maps.LatLng(48.110073077,-102.568801362),

  ];

The square wouldn't be too hard, but the L shape has my little brain going. Any suggestions?

 

 

 

** PS. I realize the post title doesn't make sense. Originally I wanted centroids, but decided vertices would be better.

Edited July 3, 2013 by caleb87

[caleb87]

Well I realized a solution. I guess I'm too quick to post a topic lol

 

I didn't figure out how to determine the middle coordinate of the L shape polygons, which I would still find interesting if anyone knows. I realized I can just use all the verticies that are within 1/10 mile of the min/max XY values (rather than the ones that would fall in the middle).