topic Create a Circular Fishnet in Geoprocessing Questions

Create a Circular Fishnet

camdenlowrance — Wed, 29 May 2013 17:29:22 GMT

Is there a tool to create a circular fishnet or grid from a point of origin, as seen here:
http://2.bp.blogspot.com/_Cc7DzBLycqc/S6pO4hSDhcI/AAAAAAAAAB4/-z2OBPhluBs/s1600/circular-grid.jpg

Re: Create a Circular Fishnet

WilliamMortimer — Thu, 30 May 2013 11:07:01 GMT

Hi there,
Would a normal fishnet transformed into a polar stereographic projection work?
Just an idea you might want to try.

William.

Re: Create a Circular Fishnet

markdenil — Thu, 30 May 2013 18:04:04 GMT

That might work.
a polar equidistant would be a better choice of intermediate step
(the circles are equally spaced in the sample)

Create a lat/long fishnet with the top line at 90° north
and the southern one however far you want to go.

Then use Transform to center the features on whatever point you fancy, with whatever extent.

Transform seems only to be available for coverages
which is fine if you have an Advanced lic.
Still, using Transfom is a bit of a hack job...

A BETTER METHOD...

You could also build such a circular network using
BearingDistanceToLine_management
looping to draw each radiating line at an incrementing angle.

Then buffer the central point for each circle
(or use MultipleRingBuffer_analysis)
and convert the buffers to lines.