On Fri, May 28, 2010 at 06:34:46AM -0700, we recorded a bogon-computron collision of the <[email protected]> flavor, containing: > > If the scale problem were solved there's another issue which Tom > Russo has pointed out on this list before: Printing maps that can > be used for compass navigation. I think the usual method is to > print a map in Mercator projection? Tom?
Not necessarily, although that would be an option for certain types of navigation. The important part is that map needs to be printed in a conformal projection. For ground navigation common projections are UTM and Lambert Conformal Conic. The "unprojected" (really "equidistant cylindrical projection") printed by Xastir will in fact be distorted so that a straight line drawn on the map will not be at the correct angle to represent a bearing line between the end points. -- Tom Russo KM5VY SAR502 DM64ux http://www.swcp.com/~russo/ Tijeras, NM QRPL#1592 K2#398 SOC#236 http://kevan.org/brain.cgi?DDTNM "It is better to live on your feet than to die with your knees." -- Mil Millington on running, in Instructions for Living Someone Else's Life _______________________________________________ Xastir mailing list [email protected] http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir
