Splitting polygons by a given size

[Lew.Gr...@gov.bc.ca]

Hi everyone,

 

I need to extract 200 hectare polygons from a layer that contains numerous polygons greater than 200 hectares.  The extracted polygon can have any shape.  Does anyone know of an automated way to do this?

 

For example for an 850 hectare polygon, I need to identify one 200 hectare polygon instead the larger polygon.

 

 

Your suggestions for how to scripts this are appreciated, please.

 

Thanks

Lew

 

 

 

[Colin Dyck]

without putting a lot of thought into it, how about calculating the extent centre of each polygon (or something similar) and writing to a point feature class, then doing a buffer on the points at a value of whatever (200 = pi r squared) is.  the resulting circle wouldn't be guaranteed to be contained in the original polygon though, not sure if that is necessary

not sure if that helps

Colin

SGRC
Selkirk College

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[Fran Tarkington]

Wow, that's a very good question.  I got nothing in terms of an actual solution.

In terms of ideas you might try converting the polygon to a raster.  I'm pretty sure there are tools that would allow you to divide a raster polygon into subpolygons, and then convert the result back.  Smooth the linework, snap to the original boundary.... 

Its a tricky one.  If you figure out a solution let us know!

Good luck

Kevin

On Mon, Oct 7, 2013 at 2:09 PM, <Lew.Gr...@gov.bc.ca> wrote:

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