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Wrong distance

Open seet61 opened this issue 5 years ago • 4 comments

I implemented my version based on https://tarantool.github.io/gis/intro.html For European coordinates everithing work correctly. {47.222531, 39.718705} I have distance 112. But for {55.030199, 104.920430} I have distance 1.7976931348623e+308.

Why?

seet61 avatar Oct 30 '19 11:10 seet61

tarantool-gis (0.1.22-1)

seet61 avatar Oct 30 '19 12:10 seet61

unix/:/var/run/tarantool/master.control> gis.Point({52.506361, 103.839354}, 4326):transform(4328)
---
- POINT Z (inf inf 0)
...
unix/:/var/run/tarantool/master.control> gis.Point({47.222531, 39.718705}, 4326):transform(4328)
---
- POINT Z (3336490.407890617 3605925.221262013 4054010.729922025)
...

seet61 avatar Oct 30 '19 13:10 seet61

I don't know any geoinformation system specifics, but whether latitude and longitude are passed correctly (not in the reverse order)?

The API describes the following order of arguments:

class gis.Point({lon, lat}, srid) class gis.Point({x, y}, srid) class gis.Point({x, y, z}, srid)

Totktonada avatar Sep 01 '20 14:09 Totktonada

BTW, it worth to note that now the example above fails this way:

$ tarantool
Tarantool 2.6.0-27-g4920782e5
type 'help' for interactive help
tarantool> box.cfg{}
tarantool> gis = require('gis')
tarantool> gis.install()
tarantool> gis.Point({52.506361, 103.839354}, 4326):transform(4328)
---
- error: '/home/alex/projects/tarantool-meta/gis/gis/projection.lua:46: PROJ: latitude
    or longitude exceeded limits'
...

I'm on 3f95c3106eb11aa405801f54bc7c2eb9566fbe95, it is current master ATM.

Totktonada avatar Sep 01 '20 22:09 Totktonada