Re: [Xlog-discussion] Azimuth Error in Xlog

[Joop Stakenborg]

Op maandag 04-05-2009 om 11:01 uur [tijdzone -0600], schreef Dana Rees:
> Thank you for the response.  I quickly check the hamlib qrb function and 
> found that it was working properly, so I tracked down in the xlog code where 
> it was being called in gc.c and found on line 61 and 62 the following:
> 
> /* data in cty.dat uses a negative number for eastern longitudes */
> retcode = qrb (lonmy, latmy, -1 * londx, latdx, &distsp, &bsp);
> 
> When checking the values of lonmy and londx, it lonmy had the wrong sign, 
> needing to be negated also.  This may be a function of something upstream, 
> but with that change, gridsquare information in preferences looks correct, 
> and azimuth and distance appear correctly.
> 
> updated code and looks like:
> 
> /* data in cty.dat uses a negative number for eastern longitudes */
> retcode = qrb ((-1.0 * lonmy), latmy, (-1.0 * londx), latdx, &distsp, &bsp);
> 
> Thank you & 73.
> Dana

Thanks Dana,

with your modification I seem to be getting wrong values for locations
west of greenwich. So I guess it needs a bit more investigation. I will
come up with a solution within the next few days/weeks.

Joop PG4I