Talk:Geographic coordinate system

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Is there an explanation of the difference between geocentric latitude and true latitude somewhere in Wikipedia? --Begemotv2718 23:52, 24 August 2005 (UTC)

See: Types of latitude. ~Kaimbridge~ 20:07, 4 November 2005 (UTC)

This article needs a lot of work. Why is the title "Geographic Coordinate System" when only lat/long is mentioned? What is the relevance of the diagram on the right? (Obviously that's rhetorical - I mean: what does it show?) Also, the whole section on lat/long is pretty incomprehensible. It should also probably mention that different meridians were in common use until the 20th century... Finally, the first sentence is wrong: a geographic co-ordinate system need not express *every* location on the earth - or indeed *any* location. Rolypole 21:23, 16 January 2007 (UTC)

1 Hexadecimal earthgrid
2 Unsourced?
3 decimal div
4 in wikipedia

[edit] Hexadecimal earthgrid

Match 213 added a long section which proposed a hexadecimal earthgrid. I am reverting this section because it violates official Widipedia policy which prohibits new ideas. It can be included only if those ideas have been published in some peer-reviewed journal, which must be cited. — Joe Kress 06:00, 14 November 2005 (UTC)

Hi Joe Kress, it was me as SP Match 213 (user contribuations) who introduced the paragraphe "The proposed hexadecimal geographic coordinate system".
I always think that this (not so new) scientific work is encyclopedia worthy. But at the moment I don't have the time to discuss and to argue on this topo.

I know you very well as a competent and sincere editor in Wikipedia. Therefore I don't resent you, that you have – for the moment – deleted this chapter.
As soon as I'll have more time, I'll come back to this topo. Interim, I invite you to follow the related discussions at the Talk:Fairway Rock Island page.

Have a good day, -- Paul Martin 11:37, 23 November 2005 (UTC)

[edit] Unsourced?

It looks pretty sourced (and common-sensical) to me. Why the 'unsourced' tag?Guinnog 21:44, 18 February 2006 (UTC)

[edit] decimal div

"Decimal division is now the most common and standard.": division?

"By combining these two angles, the horizontal position of any location on Earth can be specified.": at this point please hammer home that in some countries, if one doesn't add a third, datum, even more important than elevation, rescue crews could easily be sent somewhere a kilometer away.

Of course there is just as good a chance that rescue crews get their datums mixed up too anyways, or never thought about them.

Hammer it home here even though datums are mentioned below it.

--jidanni 2/06