Script clases ide bd espacial
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The document discusses how to work with geospatial data in PostgreSQL including how to add geometry columns to tables, insert point data using WKT format, and perform basic queries to return geometries as text or get X and Y coordinates. It also covers importing shapefile data and looking up spatial reference system IDs.
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Script clases ide bd espacial
- 1. - qué es una IDE - datos - metadatos - sw - servicios - estandares - Qué es OGC - Abrir el command de postgresql create table test (id int, name varchar(25)); d d geometry_columns d spatial_ref_sys - tipos de geometria: POINT LINESTRING POLYGON MULTIPOINT MULTILINESTRING MULTIPOLYGON - siguiente las lineas de comando: select AddGeometryColumn('test' , 'location' , 4326, 'POINT' , 2); insert into test(id, name, location) values (1, 'Colorado State Capitol' , ST_GeomFromText('POINT(-104.98716 39.73909)' , 4326)); select id, name, ST_AsText(location) from test; insert into test(id, name, location) values (2, 'Broncos Stadium' , ST_GeomFromText('POINT(-105.02101 39.74630)' , 4326)); insert into test(id, name, location) values(3, 'foo' , ST_GeomFromText('POINT(- 300 400)' , 4326)); select GeometryType(location) from test; select ST_IsValid(location) from test; select id, name, ST_AsText(location), ST_X(location), ST_Y(location) from test; - Averiguar el codigo SRID del sist. de coord. a utilizar SELECT srid, auth_name, auth_srid, srtext, proj4text FROM spatial_ref_sys WHERE srtext like '%UTM%'; - Importar un shapefile: shp2pgsql -s 4269 st99_d00.shp us_states > us_states.sql - Link ejercicio android https://developers.google.com/maps/documentation/android/v1/hello-mapview?hl=es