[Ssc-dev] lat long order in j3m

[Harlo Holmes]

while i definitely agree with the rationale presented, and i, too, am used
to seeing lat/lng, this doesn't change the fact that ELS requires data to
be massaged into one of those formats (as per the link I last submitted.)

Jonny & Svetlana: now that you have all the information available
concerning why the data is the way it is, can you let us know if that's
indeed a blocker for displaying lat/lng properly?

On Thu, Oct 30, 2014 at 2:20 PM, David Oliver <david at guardianproject.info>
wrote:

> Once again, I'm cool with anything we'd want to do internally.  But, I'd
> be at a loss to explain why we do anything other than display our data in a
> way users best understand.
>
> Well prior to the advent of computers (as in 1879), organizations like the US
> Geological Survey
> <http://en.wikipedia.org/wiki/United_States_Geological_Survey> were
> making definitive (and binding in law, in some cases) maps of the
> landscape.  Here's their definition:
>
> http://education.usgs.gov/lessons/coordinatesystems.pdf
>
> These standards - re-published in 2013 - use latitude/longitude.
>
>
>
>
> 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 2:01 PM, Jonathan <megabulk at gmail.com> wrote:
>
>> And then there's this:
>> http://docs.geotools.org/latest/userguide/library/referencing/order.html
>> It's a snarly situation caused by programmers deciding early on that
>> latitude/longitude should conform to X/Y and thus be in the opposite order
>> from what most people expect. It's kind of a SNAFU.
>>
>> Svetlana, if you can return the proper lat and long from your API, I'll
>> be totally content.
>>
>> On Oct 30, 2014, at 10:54 AM, David Oliver <david at guardianproject.info>
>> wrote:
>>
>> 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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