fix error in surface position with reference

2016-11-10 13:45:36 +01:00
parent 220b8e9716
commit b9c6db6f65
2 changed files with 4 additions and 4 deletions
--- a/pyModeS/adsb.py
+++ b/pyModeS/adsb.py
@@ -427,9 +427,9 @@ def surface_position_with_ref(msg, lat_ref, lon_ref):
    ni = _cprNL(lat) - i

    if ni > 0:
-        d_lon = 360.0 / ni
+        d_lon = 90.0 / ni
    else:
-        d_lon = 360.0
+        d_lon = 90.0

    m = util.floor(lon_ref / d_lon) \
        + util.floor(0.5 + ((lon_ref % d_lon) / d_lon) - cprlon)