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Show HN: J6 a Geohash

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4 pointsshakna14 comments

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Pluscodes, WhatThreeWords and other encoding schemes are all competing standards that are being actively looked at.

Some of them have some serious problems that can make them difficult to use, or confusing to use.

This little project was done to see just how easy a less ambiguous format might be.

Turned out fairly well.

Contrived Example:

Longitude to 6 Decimal Places: 178.000000

Lattitude to 6 Decimal Places: 68.000000

> violator-enrich-disband-handed-turkey-lure

6 decimal places is enough to get a 10cm resolution, in most of the world.

Latitude is spelt with one T after A, only, so you get an error if you spell --latitude correctly.

And if I feed J6 with my geolocation down to 6 or 7 decimals, I am offered 5 words only. Feeding them back into J6 tells me I don't have enough tokens.

Some coordinates (e.g.: 55.555555; 14.444444) yields only 4 words (in the example given: pucker-ergonomic-rethink-shun).

Looks like the way I generated the original dictionary left some holes.

I'm in the process of filling them. (And I've added an error when this crops up.)

I believe I've regenerated the database correctly this time.

> python3 j6.py --longitude 55.555555 --latitude 14.444444

> exemption-stifling-wrist-deface-excavate-stimuli

The argument parser doesn't accept coordinates 0.0;0.0

That should be working.

> python3 j6.py --longitude 0.0 --latitude 0.0

> sliceable-ensure-disband-handed-turkey-lure

When I feed it 0.0; 0.0, it responds with the usage message.

Python 3.7.4 here.

I'm running under Python 3.7.4.

Are you sure you checked out a commit after 6ce39f54564f4a5cd0439989e19a2f68c105d3cb?

The 0;0 was tested when I posted my original comments. I cannot reproduce it with the latest commit. Thanks.

And how does it distinguish between

    lat=-1, lon=-1

and

    lat=89, lon=179

Both seems to yield

    recopy-handset-disband-handed-turkey-lure

Shouldn't the longitude be modulused 360 and the latitude modulused 180 (rather than 180 and 90, repectively)?

Yep. Missed abs. Fixed. [0]

[0] https://git.sr.ht/~shakna/j6/commit/107c4a5913606d93ac79db1c...

That should be fixed.

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