[OSRS-PROJ] Re: Maidenhead grids fair game for proj?

Gerald I. Evenden gerald.evenden at verizon.net
Wed Mar 5 21:06:05 EST 2003

Well said and I second!

On Wed, 2003-03-05 at 18:22, Duncan Agnew wrote:
> I would argue strongly against adding Maidenhead references to PROJ: it
> really is apples and oranges. PROJ takes, as input and output, pairs
> of real numbers: lat/long and x/y. The Maidenhead system encodes lat/long
> into a (limited-precision) alphanumeric string, referring to a region,
> not a point (the precision is extensible, I admit). There are very many
> such regionalizations: Marsden squares, Flinn-Engdahl regions, the Military
> Grid Reference System [based on UTM], the new US National Grid Reference
> system, and on and on.
> This is not to deny the value of having such routines, but they should
> be kept separate from the proj and cs2cs routines, since their output is
> a different kind of thing (and not invertible).
> Duncan Agnew
> dagnew at ucsd.edu

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