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[Geojson] Question on Redundancy

Chris Goodman <Chris.Goodman@objectconsulting.com.au> Mon, 03 July 2017 01:06 UTC

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From: Chris Goodman <Chris.Goodman@objectconsulting.com.au>
To: "geojson@ietfa.amsl.com" <geojson@ietfa.amsl.com>
Thread-Topic: Question on Redundancy
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Date: Mon, 03 Jul 2017 01:06:39 +0000
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Subject: [Geojson] Question on Redundancy
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Hello,
In the IETF standard
https://tools.ietf.org/html/rfc7946#section-3.1.6
3.1.6<https://tools.ietf.org/html/rfc7946#section-3.1.6>.  Polygon





   To specify a constraint specific to Polygons, it is useful to

   introduce the concept of a linear ring:



   o  A linear ring is a closed LineString with four or more positions.



   o  The first and last positions are equivalent, and they MUST contain

      identical values; their representation SHOULD also be identical.


The last point is redundant. Why didn't the standard define a LinearRing as a new type and avoid the redundancy?

For example, in an IOT  LoRa network, the low data and small packet size places constraints on the data. The redundancy could be avoided if we assume the closing coordinate has the same values as the first.

Regards, Chris


Chris Goodman
Supervising Consultant
M:  +61 419 482 620
Office:  +61 3 8615 4500
Web: www.objectconsulting.com.au
Email: chris.goodman@objectconsulting.com.au<mailto:chris.goodman@objectconsulting.com.au>

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