[Xastir] Map projection (Re: Breaking up shapefiles)

[Gerry Creager n5jxs]

I'd recommend WGS-84, Lat/Lon ("unprojected" or cylindrical-equidistant).

Now:  Do we want to start talking about the ability to allow specific 
projections for different areas of the globe, user selectable?  There 
are benefits therein.  We can talk transverse mercator for areas at the 
mid-latitudes, mercator for fixed azimutal lines, equal area.  Proj-4 
will support the reprojections, and then we have to do the math on the 
fly... or a quickie proj scriptlet... to get the position reports in place.

gerry

Tapio Sokura wrote:
> Curt Mills wrote:
> 
>> Makes me really look forward to the day when we can pre-process all
>> of our map data as we import it into our datastore, then pull it out
>> at lightning speed in the datum/coordinates we like for drawing.
> 
> 
> This reminds me to ask about the "natural" map projection in Xastir. If 
> I were to construct raster maps, what would be the ideal projection for 
> Xastir? I.e. the map would not have to be rotated or twisted or turned 
> to be seen properly in Xastir, only linearly scaled up or down to fit 
> the zoom level. I assume the datum is WGS-84.
> 
>   Tapio
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-- 
Gerry Creager -- gerry.creager at tamu.edu
Texas Mesonet -- AATLT, Texas A&M University	
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