Is there any online viewer which displays the polygons assuming great circle lines for the edges?

Question

My question is similar to this one: Are there any online WKT editors? The links given in answers have been very useful to me.

However, it seems that when the tools in question display maps, they assume the WKT describes a geometry and not a geography.

By this I mean that they assume the geometry is on a Cartesian coordinate system, and not a geographic coordinate system.

This causes the edges of the polygon to just connect the vertices with the shortest distance on the map, and not great circle distances on the map.

Is there any Viewer which displays the polygons assuming great circle lines for the edges, instead of assuming that edges are in Cartesian space?

Please clarify what you mean by geographies ? Well-known text (WKT) is a text markup language for representing vector geometry objects on a map. — gene, May 19 '15 at 15:37
But PostGIS has a GeogFromText function, which accepts WKT input without trouble. This gives different results than GeomFromText does, for logical reasons. So how is WKT geometry-only? — Chris Morrow, May 19 '15 at 16:47
But what you mean by geographies ? What is the difference with geometries for you ? — gene, May 19 '15 at 16:49
I think what you are trying to ask is: "Is there any Viewer which displays the polygons assuming Great Circle Lines for the edges, instead of assuming that Edges are in Cartesian Space" Is this correct? — Devdatta Tengshe, May 19 '15 at 16:53
@ChrisMorrow: I have edited the question based on your comment. If this not what you were expecting, feel free to revert the edit. — Devdatta Tengshe, May 22 '15 at 05:56
Thanks for the edit! This captures it correctly. (I just modified capitalization.) — Chris Morrow, May 22 '15 at 13:56

score 2 · Accepted Answer · answered May 25 '15 at 18:17

2

I've made an attempt at this using Leaflet, Mapbox.js and the Arc.js plugin:

Currently this works with LINESTRING and POLYGON strings. Just enter the WKT in the input box to the top right and it will update.

answered May 25 '15 at 18:17

Snorfalorpagus

Any plans to bring this back online? – dbaston May 07 '18 at 14:16
1

@dbaston I think this got wiped out accidentally when I changed blogging platform. I'll try and get it (or something similar) back up this week. – Snorfalorpagus May 14 '18 at 08:31

score 0 · Answer 2 · answered Feb 16 '19 at 23:00

0

You can try this (in case you still need it)

answered Feb 16 '19 at 23:00

Arseniy

2 Answers2