(I'm pulling this bit of conversation out from the JSON discussion so it doesn't get overlooked - it has nothing to do with JSON, but with ADM primitive types.)
I've noticed that several geospatial serialization formats (at least "well-known text" and GeoJSON) omit "circle" from their list of basic geometric forms, even when they have numerous more complex types such as multi-curves. This led me to here: http://forums.mysql.com/read.php?23,148162,152625#msg-152625 which offers a reasonably compelling argument for why "circle" is not a reasonable shape to discuss in geospatial contexts (loosely, because there's no consistent way to map that to a spherical coordinate system). Does this mean that perhaps ADM shouldn't *have* a "circle" primitive type? I assume that the ADM spatial types are intended for geospatial work, and if the consensus of the smart people is that "circle" doesn't fit in that world, perhaps we shouldn't include it either? Ceej aka Chris Hillery
