Talk:Coordinate positioning

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First figure, illustrating positioning systems, is not very useful Airy Magnien (talk) 10:19, 29 August 2016 (CEST)

Have put two titles under "General", as the text was not flowing. Airy Magnien (talk) 10:35, 29 August 2016 (CEST)

Sentence "It could be read as "at coordinate X, Y, Z in the system [EPSG:xxxxx] [01/06/2014]4" [4: The exact content of the definition string of the geometric system is not yet final]" seems incomplete. Suggested reformulation, if properly understood : An (X,Y,Z) set of coordinates always stored in the model with its full references. Thus (X,Y,Z) could be read, for instance, as "at coordinate X, Y, Z in the system [EPSG:xxxxx] dated [01/06/2014] footnote 4" [4: The exact content of the definition string of the geometric system is not yet final]"

Figure "conversion board" is incomplete. Intermediate location "0.5 / 122km" is fine, but nothing is said about km start and km end. Is km start always supposed to start with zero value ? Airy Magnien (talk) 10:22, 29 August 2016 (CEST)

Tried (unsuccessfully) to add a footnote using <ref>. Purpose was to expand an acronym.Airy Magnien (talk) 10:22, 29 August 2016 (CEST)

Sentence "Coordinate reference systems can also be used to define schematic coordinates as they are used in terms of screen coordinates" is unclear; probably means "Coordinate reference systems can also be user-defined screen coordinates, for instance to define schematic views of the network" Airy Magnien (talk) 10:18, 29 August 2016 (CEST)