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bah get rid of last example not quite the solution for problem after further ruminating.

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git-svn-id: http://svn.osgeo.org/postgis/trunk@11607 b70326c6-7e19-0410-871a-916f4a2858ee
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Regina Obe 2013-07-02 15:43:56 +00:00
parent 058fbaf3bb
commit c7adb0717b
1 changed files with 3 additions and 3 deletions
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6
doc/reference_measure.xml
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@ -2149,11 +2149,11 @@ The current implementation supports only vertices as the discrete locations. Thi
</refsection>
<refsection>
<title>Examples</title>
<para>For each building, find the parcel that best covers it. The answer will return at most one record per building
and will return the parcel that it intersects where parts of building that don't intersect the parcel, the furthest part of building is closest to this parcel.</para>
<!-- <para>For each building, find the parcel that best covers it. First we prefer the parcel first that completely covers.
Then for those that only partially cover we prefer the parcel whose furthest part from the building closer than any other parcel.</para>
<programlisting>SELECT DISTINCT ON(buildings.gid) buildings.gid, parcels.parcel_id
FROM buildings INNER JOIN parcels ON ST_Intersects(buildings.geom,parcels.geom)
ORDER BY buildings.gid, ST_MaxDistance(buildings.geom, parcels.geom);</programlisting>
ORDER BY buildings.gid, ST_MaxDistance(buildings.geom, parcels.geom);</programlisting> -->
<para>Basic furthest distance the point is to any part of the line</para>
<programlisting>postgis=# SELECT ST_MaxDistance('POINT(0 0)'::geometry, 'LINESTRING ( 2 0, 0 2 )'::geometry);
st_maxdistance