Subdivide Polygons based on preexisting grid index?
I'm working with a fire department that created their own map books decades ago. I have a polygon layer of the map pages. It looks like the map polygons are different dimensions based on population density. The map covers approximately 8000 sq miles. There are 8200 ish of these map pages.
Each page (based on the polygon size) has an index of points.
I'm trying to figure out a way to subdivide the page polygons based on the index points, into smaller polygons. For Example, page 26848 turns into the evenly divided 49 polygons representing the index points, with the point as the center of the new smaller grid.
Thoughts on how to do this?
There are two obvious tools to create a set of index sheets based on the centroids. Do you have a sheet size in mind? Thanks for the sample that makes it much easier to experiment. The first thing I did was to project the data to a filegeodatabase so that I have feet units.
My first attempt was to just create Thiessen polygons around the points. This works well for even spacing. There are a few long bits around the edges. You could trim them up and straighten the fuzzy bits by snapping to the larger index.
I then tried a Graphic Buffer with a size of 290 metres. This also gave a good start, a bit of integration would snap the overlaps to a tidy grid.
