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ISO-TC211 / StandardsTracker

This GitHub repository lets you - our users - log and track issues that you find with our standards and other document. Tag the issue with the standard or standards effected; we will assign it to the relevant group(s) within TC 211.
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The “defining standard” 19107 no longer defines the terms “direct position”. #400

Open wilkesg opened 3 years ago

wilkesg commented 3 years ago

See 19123-1 revision wd.

4.1.13 direct position

position described by a single set of coordinates within a coordinate reference system [ISO 19107] NOTE: Cells in a grid coverage are identified by their direct position in the domain set of this coverage. Ask the TMG to change the terminology spread sheet to change the defining standard for this term.
PeterParslow commented 3 years ago

ISO 19107:2019 still makes a lot of use of the term "direct position", and it seems to me like the logical place to define the term.

Could @geomancer2012 / WG9 comment on whether the definition disappeared by accident, and if not, then what the thinking was?

ReesePlews commented 3 years ago

"direct position" is now in ISO 19136-1:2020, 3.1.20

typically if a term is retired by the original source standard, the oldest standard where the term is defined will become the designated authoritative source reference. in the case the direct position, this would have been assigned to ISO 19125-1 Simple Feature Access. However, since ISO 19136-1 picked up the term and was under revision at the time, TMG opted to have 19136-1 be the new authoritative source for "direct position". this is shown in the OBP, Geolexica, and the TMG spreadsheet.

PeterParslow commented 3 years ago

Not sure how I missed that! (Although I'm still surprised that it went from 19107)

ReesePlews commented 3 years ago

from the Note at the start of Clause 3 in 19107:2019...

NOTE Common words from geometry, such as point, curve, line, surface solid, etc., take the common meanings unless they are used as classifier names (usually interfaces), in which case they are a digital representation of the geometric concept. Common mathematical terms that are not defined here take on their common meanings in mathematics (see [15], [10], ISO/IEC 11404 or a standard text on the topic, such as the "N. Bourbaki"1 series currently published by Springer Verlag, in French, English and German). Care should be taken since mathematical terms can be context sensitive, and can easily be confused with common words. For example, "open" set, "closed" curve, "closed" set, "rational" function, "boundary," "interior," "closure", "exterior", "function" and others from common language but have very specific meanings in mathematics and in this document. Where necessary to prevent confusion, existing definitions have been elaborated to make their intent in this document explicit. Mathematical terms include common vocabulary from geometry, topology, calculus, geodesy and differential geometry. Many of these terms can be sufficiently common that inclusion is not necessary. They are included here to prevent confusion especially for terms like the ones listed above that have another meaning in another context.

as for the reasons for other terms being retired from 19107:2019... JH can explain better.

I have a complied a list of retired terms, I will see if that is still current and make it available "somewhere" when it is ready.