From 62c37aa18d140413d9d98fc6c6e337b390de18e5 Mon Sep 17 00:00:00 2001 From: Sandro Santilli Date: Tue, 24 Apr 2012 19:12:12 +0000 Subject: [PATCH] Azimuth on the 9th hour of the clock is 3PI/2, not 3PI/4 (thanks ij) git-svn-id: http://svn.osgeo.org/postgis/trunk@9660 b70326c6-7e19-0410-871a-916f4a2858ee --- doc/reference_measure.xml | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/doc/reference_measure.xml b/doc/reference_measure.xml index 3b3eadc94..44c2ed43a 100644 --- a/doc/reference_measure.xml +++ b/doc/reference_measure.xml @@ -724,7 +724,7 @@ SELECT ST_Area(the_geog)/POWER(0.3048,2) As sqft_spheroid, ST_Area(the_geog,fal ST_Azimuth - Returns the angle in radians from the horizontal of the vector defined by pointA and pointB. Angle is computed clockwise from down-to-up: on the clock: 12=0; 3=PI/2; 6=PI; 9=3PI/4. + Returns the angle in radians from the horizontal of the vector defined by pointA and pointB. Angle is computed clockwise from down-to-up: on the clock: 12=0; 3=PI/2; 6=PI; 9=3PI/2. @@ -745,7 +745,7 @@ SELECT ST_Area(the_geog)/POWER(0.3048,2) As sqft_spheroid, ST_Area(the_geog,fal Returns the azimuth of the segment defined by the given Point geometries, or NULL if the two points are coincident. Return - value is in radians. Angle is computed clockwise from down-to-up: on the clock: 12=0; 3=PI/2; 6=PI; 9=3PI/4 + value is in radians. Angle is computed clockwise from down-to-up: on the clock: 12=0; 3=PI/2; 6=PI; 9=3PI/2 The Azimuth is mathematical concept defined as the angle, in this case measured in radian, between a reference plane and a point. -- 2.50.1