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Re: how to calculate distance from pairs of latitude/longitude measurements? [message #65610 is a reply to message #65609]

Wed, 11 March 2009 12:49

natha
Messages: 482
Registered: October 2007

Senior Member

I found MAP_PROJ_FORDWARD function to convert lat/lon to cartesian
coordinates. So, calculate the distance between 2 cartesian points
it's eaasy.

The problem is when I use this function. The following problem ocurs:

alb_cart=MAP_PROJ_FORWARD(-73.83,42.70)
% MAP_PROJ_FORWARD: Value of Projection index is out of allowed range.
% Execution halted at: $MAIN$

(-73.83,42.70) are a valid lat/lon coordinates of station situated in
Albany, USA.
MAP_STRUCTURE is required to use this function (MAP_PROJ_FORWARD) but
I don't know which mapping projection use.

Any suggestions !?

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[Message index]

		Re: how to calculate distance from pairs of latitude/longitude measurements? By: Jeremy Bailin on Thu, 12 March 2009 07:20
		Re: how to calculate distance from pairs of latitude/longitude measurements? By: mankoff on Thu, 12 March 2009 05:02
		Re: how to calculate distance from pairs of latitude/longitude measurements? By: natha on Wed, 11 March 2009 14:12
		Re: how to calculate distance from pairs of latitude/longitude measurements? By: KRDean on Wed, 11 March 2009 13:44
		Re: how to calculate distance from pairs of latitude/longitude measurements? By: David Fanning on Wed, 11 March 2009 13:33
		Re: how to calculate distance from pairs of latitude/longitude measurements? By: natha on Wed, 11 March 2009 13:21
		Re: how to calculate distance from pairs of latitude/longitude measurements? By: Bruce Bowler on Wed, 11 March 2009 13:07
		Re: how to calculate distance from pairs of latitude/longitude measurements? By: natha on Wed, 11 March 2009 12:49

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