43.651070, −79.347015
Understanding Polygon Creator
How new geometry is constructed
Draw a polygon on a map and export the resulting geometry as GeoJSON.
Polygon Creator derives new shapes from supplied locations or boundaries. The output reflects an algorithm and its settings rather than a surveyed or administrative boundary.
How to assess the geometry
Browser memory limits apply to large inputs. Verify CRS, geometry, attributes, and output before replacing source data.
Inspect sparse areas, edges and degenerate inputs in the Polygon Creator result. Compare the generated geometry with the source at several zoom levels and keep the original data available.