sean_BDAGOV

Polygon query based upon specific internal dimensions

Discussion created by sean_BDAGOV on Mar 17, 2014
- dataset contains polygons of varying shapes and sizes.
- query: select all polygons that can completely contain a circle with an area of 416sq.m

The obvious is to select by area > 416. However this will select a polygon 1m by 416m and not completely fulfill what is desired.

So my question is... Is there a way to query the internal dimensions or geometry of a polygon for length and a perpendicular offset that would allow this circle to fit completely inside? Can each polygon side be checked for length and then the perp length to another side?



This is a real query; the polygons are areas classified as hardstanding and the circle represents the rotating blades of a helicopter + a 50% buffer for clearance. I am identifying emergency landing sites for post hurricane scenarios.

Any help will be greatly appreciated!

Sean Patterson

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