[OSRS-PROJ] Problem with geod sources

[Gerald I. Evenden]

It looks like you are trying to determine the inverse usage of
geod (lat1 lon1 lat2 lon2 -> azi1 azi2 dist) but because the inverse
option (-I) is not specified, you are doing the forward (lat1 lon1 azi
distance ->
lat2 lon2 azi2).

No comments until I see the correct inverse execution of:

geod -I +ellps=WGS84

and those input/output results.

I'm not saying geod is right or wrong but we got to make a
correct statement of out intents.  It may well have a problem because
specifying either polar point creates *all sorts* of problems.  ;-)

__________________________________________________
Jerry Evenden and the Low Riders, Katie and  Daisy May
gevenden at capecod.net  http://www.capecod.net/~gevenden
----- Original Message -----
From: Ildefonso Junquero <junquero at sainsel.es>
To: <osrs-proj at remotesensing.org>
Sent: Friday, June 09, 2000 12:37 PM
Subject: [OSRS-PROJ] Problem with geod sources


> Hi!
>
>     I'm currently using Proj4 and found an error with geod the problem
> is that If I run:
>
>     geod +ellps=WGS84
>
>     and enter:
>
>     90s 0e 89s 0e
>     180d 0d 19892237.570         Is returned, and this is not a correct
> result
>
>     90n 0e 89n 0e
>     0d 180d  19892237.570         Is returned, and this is not a correct
>
> result
>
>     90n 0e 89s 0e
>     0d 180d 111693.865            Is returned, and this value is correct
>
> if it was 89n instead of 89s
>
>     I'm using PROJ 4.4.1 in Windows NT SP5, Microsoft Visual C++6 SP3.
>
>     Thank you for any help in advance.
>
>     Best regards.
>
>     Ilde.

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