[Proj] Proj Digest, Vol 113, Issue 8

[Cusick, Joel]

It is my experience that defined descriptive bounds tagged to coordinate
systems has caused great confusion in GIS circles - especially for "legacy"
systems.
*NAD_1983_To_WGS_1984_2*  for example, tagged for use in the Aleutians
still is being used today with modern positional tools (like GPS).
Over the years, ESRI has refined their use of these and we welcome these
changes.  See the red text on this page.
http://support.esri.com/cn/knowledgebase/techarticles/detail/24159




On Fri, Oct 25, 2013 at 9:00 AM, <proj-request at lists.maptools.org> wrote:

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>    1. Re: Projection bounds question (Hermann Peifer)
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> ----------------------------------------------------------------------
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> Message: 1
> Date: Thu, 24 Oct 2013 20:11:10 +0200
> From: Hermann Peifer <peifer at gmx.eu>
> Subject: Re: [Proj] Projection bounds question
> To: "PROJ.4 and general Projections Discussions"
>         <proj at lists.maptools.org>
> Message-ID: <526962BE.4090301 at gmx.eu>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> On 2013-10-24 17:57, Richard Greenwood wrote:
> > Coordinate systems do not generally have defined bounds although there
> > may be laws that govern where a given coordinate system is to be used.
> > In theory, you could represent any place on the earth in any coordinate
> > system.
> >
>
> (Ahem)
>
> How would you represent a point at 52S 170W in ETRS89/LAEA Europe, also
> known EPSG:3035? 52S 170W happens to be the antipodal point of the
> coordinate system's projection centre.
>
> Hermann
>
>
>
>
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> End of Proj Digest, Vol 113, Issue 8
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-- 
Joel Cusick
GIS Specialist
c: 907.280.9724 w: 907.644.3549
240 W. Fifth Ave. Anchorage AK 99501
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