[Ssc-dev] lat long order in j3m

[David Oliver]

Harlo,

I think it would be wise to distinguish between what is a standard in our
internal data representation from what is displayed to users.  I've emailed
a friend of mine with 30 years of experience in geographic information
systems (including ESRI, the most prominent commercial GIS) and, as I
suspected, his views align with the majority of things you see on the web
related to display of earth-positioning data: lat/long is the order people
are used to seeing.

I looked at the GeoJSON website and see that they use terminology not
familiar to most normal people, but probably ingrained in actual working
cartographers (because it maps well to the idea of the Cartesian plane):
"easting" and "northing".  In an absolutely hilarious error, this page on
Wikipedia describes the meaning, and how to display.....then get's it
backwards because....well, because that's what people expect: latitude,
followed by longitude:

http://en.wikipedia.org/wiki/Easting_and_northing

By the way, who are "Elastic Search" and why is that of overriding
importance to us?






David M. Oliver | david at g <david at olivercoady.com>uardianproject.info |
http://g <http://olivercoady.com>uardianproject.info | @davidmoliver | +1
970 368 2366

On Thu, Oct 30, 2014 at 11:53 AM, Harlo Holmes <harlo.holmes at gmail.com>
wrote:

> Actually, the order is Lon, Lat, to conform to GeoJSON standards (which is
> required by Elasticsearch.)
>
> On Thu, Oct 30, 2014 at 11:52 AM, David Oliver <david at guardianproject.info
> > wrote:
>
>> Agreed - the order is LAT, LONG
>>
>> more info: http://www.geomidpoint.com/latlon.html
>>
>>
>>
>> David M. Oliver | david at g <david at olivercoady.com>uardianproject.info |
>> http://g <http://olivercoady.com>uardianproject.info | @davidmoliver | +1
>> 970 368 2366
>>
>> On Thu, Oct 30, 2014 at 10:53 AM, Svetlana Chirkova <schirkova at gmail.com>
>> wrote:
>>
>>> Hi guys, just wanted to confirm that standard/convention of gps
>>> coordinates ordering (lat,lon vs lon,lat)
>>>
>>> i always thought it was lat, lon (
>>> http://stackoverflow.com/questions/7309121/preferred-order-of-writing-latitude-longitude-tuples
>>> )
>>>
>>> but j3m is lon,lat at the moment.
>>>
>>> just wanted to confirm that:
>>> - it's suppuposed to be 'long,lat'
>>> - j3m will continie to be 'long,lat'
>>>
>>> ?
>>>
>>> where am i...
>>>
>>> Thanks!
>>>
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>>
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