Rakesh!
The distance_sphere and makebox2d functions are specific to postgis.
MySQL GIS Implementation is based on the Open GIS Simple SQL
Specification (read more on www.opengeospatial.com). The SetSRID is also
not in the specification as far as I know (it should be, but I can't
find it), but many GIS implementations does seem to implement it. Not so
MySQL though, as MySQL currently only supports on SRID, the flat or
euclidean geometry.
Still, there are a few things missing in the current MySQL GIS
implementation compared to the "Simple SQL" spec. Many of these (not
including SRID support though) is available in special version that you
can read about here: http://forge.mysql.com/wiki/GIS_Functions where you
can also find download links.
Best regards
Anders Karlsson
[EMAIL PROTECTED] wrote:
Hi All
I looking for the stated functions. Earlier I was using postGIS in that
they are present i am wondering if I can get similar kind of method in
MySql.I am Using Mysql 5.0.51a version.
1. I am trying to retrieve the distance between two geometries in the
table using the following syntax:
SELECT X(s.geom),Y(s.geom),todofuken||shigun||kuchoson AS address,
(distance_sphere(s.geom,GeomFromText('POINT(135 35)',4326))) AS
distance
FROM todofuken_tbl t,shikuchoson_tbl s.
ERROR 1305 (42000): FUNCTION .DISTANCE _SPHERE does not exist
2. I am trying to excute this query in mysql :
select MakeBox2D(GeomFromText('POINT(135.0 34.0)',4326),
GeomFromText('POINT(135.5 34.5)',4326));
ERROR 1305 (42000): FUNCTION blog_gisdb.MakeBox2D does not exist
3. I am trying to excute this query in mysql :
SELECT uri,X(geom),Y(geom),ROUND(dist,2) AS distance FROM (SELECT
uri,geom,distance(geom,GeomFromText('POINT(135.25 34.25)',4326)) AS dist
FROM geom_tbl g,uri_tbl u WHERE g.id=u.id AND geom &&
SetSRID(MakeBox2D(GeomFromText('POINT(135.0 34.0)',4326),
GeomFromText('POINT(135.5 34.5)',4326)),4326)) AS d ORDER BY dist;
ERROR 1305 (42000): FUNCTION blog_gisdb.SetSRID does not exist
How I find above functions in MYSQL and how i use mysql GIS Extension.
Thanking You in inticipation
Rakesh
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