mysql> GRANT ALL ON *.* TO usuario@'202.54.10.20' IDENTIFIED BY 'PASSWORD';
miércoles, 10 de junio de 2009
martes, 9 de junio de 2009
Obter UTM a partir de coordenadas xeográficas en graos, minutos e segundos
select cod_escola,
AsText(Transform(GeomFromEWKT('SRID=4326;POINT( -'
|| gr_lon + min_lon/60 + seg_lon/3600 || ' '
|| gr_lat + min_lat/60 + seg_lat/3600 || ')'), 23029))
from (
select cod_escola,
cast(split_part(lat, ' ', 1) as numeric) as gr_lat,
cast(split_part(lat, ' ', 2) as numeric) as min_lat,
cast(split_part(lat, ' ', 3) as numeric) as seg_lat,
cast(split_part(lon, ' ', 1) as numeric) as gr_lon,
cast(split_part(lon, ' ', 2) as numeric) as min_lon,
cast(split_part(lon, ' ', 3) as numeric) as seg_lon
from (
SELECT cod_escola, corrdenadas,
split_part(replace(corrdenadas, ',','.'), ';', 1) as lat,
split_part(replace(corrdenadas, ',','.'), ';', 2) as lon
FROM coordenadas
) as vw ) as vw2
AsText(Transform(GeomFromEWKT('SRID=4326;POINT( -'
|| gr_lon + min_lon/60 + seg_lon/3600 || ' '
|| gr_lat + min_lat/60 + seg_lat/3600 || ')'), 23029))
from (
select cod_escola,
cast(split_part(lat, ' ', 1) as numeric) as gr_lat,
cast(split_part(lat, ' ', 2) as numeric) as min_lat,
cast(split_part(lat, ' ', 3) as numeric) as seg_lat,
cast(split_part(lon, ' ', 1) as numeric) as gr_lon,
cast(split_part(lon, ' ', 2) as numeric) as min_lon,
cast(split_part(lon, ' ', 3) as numeric) as seg_lon
from (
SELECT cod_escola, corrdenadas,
split_part(replace(corrdenadas, ',','.'), ';', 1) as lat,
split_part(replace(corrdenadas, ',','.'), ';', 2) as lon
FROM coordenadas
) as vw ) as vw2
Cambio de proxección en PostgreSQL
SELECT AsText(Transform(GeomFromEWKT('SRID=23029;'||'POINT(' ||"Coordenada_X" || ' ' || "Coordenada_Y" || ')'), 4326))
FROM TaboaConCoordenadas
FROM TaboaConCoordenadas
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