From e7367efa416d0084899bd17f01b15cb351a44097 Mon Sep 17 00:00:00 2001 From: Andy Spencer Date: Fri, 12 Feb 2010 18:10:58 +0000 Subject: [PATCH 1/1] Update to ll2m --- src/gis-util.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/src/gis-util.c b/src/gis-util.c index 951b452..f748cd2 100644 --- a/src/gis-util.c +++ b/src/gis-util.c @@ -191,9 +191,9 @@ void xyz2ll(gdouble x, gdouble y, gdouble z, */ gdouble ll2m(gdouble lon_dist, gdouble lat) { - gdouble azim = (-lat+90)/180*M_PI; - gdouble rad = sin(azim) * EARTH_R; - gdouble circ = 2 * M_PI * rad; + gdouble incl = lat2incl(lat); + gdouble rad = sin(incl) * EARTH_R; + gdouble circ = 2 * G_PI * rad; return lon_dist/360 * circ; } -- 2.43.2