[Groonga-commit] groonga/groonga [master] doc: add note about 1st argument of geo_distance

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2012年 6月 19日 (火) 14:47:56 JST


HAYASHI Kentaro	2012-06-19 14:47:56 +0900 (Tue, 19 Jun 2012)

  New Revision: 400604baa354c7c587024efb8f927cf967d90a55
  https://github.com/groonga/groonga/commit/400604baa354c7c587024efb8f927cf967d90a55

  Log:
    doc: add note about 1st argument of geo_distance

  Modified files:
    doc/source/functions/geo_distance.txt

  Modified: doc/source/functions/geo_distance.txt (+11 -0)
===================================================================
--- doc/source/functions/geo_distance.txt    2012-06-19 14:19:55 +0900 (fac54ca)
+++ doc/source/functions/geo_distance.txt    2012-06-19 14:47:56 +0900 (e64037e)
@@ -153,6 +153,17 @@ Here is a sample about calculating the value of distance with explicitly specifi
 
     ``geo_distance`` uses square approximation as default. If you omit ``approximate_type``, ``geo_distance`` behaves like ``rectangle`` was specified.
 
+.. note::
+
+    ``geo_distance`` accepts the string indicating the coordinate as
+    the value of ``point1`` when the value of ``approximate_type`` is
+    ``"rectangle"``.
+    If you specified the string indicating the coordinate as the value
+    of ``point1`` with ``sphere`` or ``ellipsoid``, ``geo_distance``
+    returns 0 as the value of distance.
+
+
+
 ``sphere``
 ...............
 
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