I like the proposal that - for the "simple JSON" - everything has a
single string format.
On 8/8/15 12:13 AM, Chris Hillery wrote:
Ok, sounds like the consensus is that we want to keep circle. That's fine
with me. To bring the conversation full circle (narf!), now the question
goes back to how best to represent that type in JSON, given that the
obvious options don't support it... but, that conversation should continue
on the original thread.
Thanks!
Ceej
aka Chris Hillery
On Fri, Aug 7, 2015 at 10:41 PM, Chen Li <[email protected]> wrote:
I second Ted's argument. The reason on
http://forums.mysql.com/read.php?23,148162,152625#msg-152625 is very
weak, since following that logic there will be no 100% lines or
rectangles on the surface of the earth. But these shapes are very
useful.
I am sure there are use cases for circles, such as the Apple's new
headquarters. A related question is: what's the overhead of
implementing and maintaining this type?
Chen
On Fri, Aug 7, 2015 at 2:04 PM, Ted Dunning <[email protected]> wrote:
There you go.
Another application.
On Fri, Aug 7, 2015 at 1:43 PM, Mike Carey <[email protected]> wrote:
AND: What if NASA wants to use us to store its database of crop
circles?
:-)
On 8/7/15 11:47 AM, Ted Dunning wrote:
On Fri, Aug 7, 2015 at 3:23 AM, Chris Hillery <[email protected]>
wrote:
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).
Actually, that argument is super-weak. It also implies that you
shouldn't
have lines (they aren't straight after projection) or squares (they
aren't
square after projection). But lines and squares both before and after
projection are very handy.
Circles are useful in many contexts. Drawing the visible horizon for a
particular observer is a great example. The flight range of an
airplane
is
another case. Positional error bounds with Gaussian errors is another.
Yes. You can approximate it using splines or polygons. But you can
approximate anything that way.
