> My two cents: I missed the original post, but I suggest you have TWO
> subroutines (preferably within a module).
>
> ll2xy (lat/lon to x/y)
>
> and
>
> xy2ll (x/y to lat/lon)
Exactly what I did in the end!
> Of course, each one would accept a string of arguments such as projection,
> scale, reference lat/longs, map corners, etc, etc.
Yarse...people keep saying projection scale - man, if I knew what that was
would I be asking these dumb questions? ;)
> When working with map coordinates, you should always use latitudes and
> longitudes, then convert to x/y before your 'final' plot.
Yeah - did that too: see CPAN for WWW::MapBlast 0.02 (tomorrow as PAUSE is
down right now) that takes an internation postcode and country name, and
returns lat/lon dragged from the mapblast.com site.
> ..this makes much more sense then to try mapping x/y from one map to x/y on
> another. Topology is not something I want to do, much less, do it well :-)
Topology - yes, that's the word I was struggling for....
>
> Generic Mapping Tools could help with this:
>
> http://gmt.soest.hawaii.edu/
Thanks!!
Lee
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