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First, the geometry type in the PostGISPostGIS supports the "simple Features" type of all OGC specifications, and on this basis expands support for 3DZ, 3DM, and 4D coordinates.1. OGC WKB and WKT formatsThe OGC defines two formats for describing

Environment for POSTGIS+GEOSERVER+OPENLAYERS3 First introduce the direct write good geojson for vector layer display example, refer to examples in geojson.html and icon.html , directly with the Geojson display vector layer var bsiconstyle =

ways to create a database with PostGIS functionality1. Check the default created GIS library when installing2. Create a new database to execute create extension PostGISCreate a table with a Geography type column1. First create a table that does not

Clustering: Indicates clustering and classification. This word is involved in postgis. Although the two terms use the same term, they indicate different meanings. One is index clustering, and the other is spatial clustering. Spatial Clustering: This

The Linux release version is Ubuntu server 6.06, And the Ubuntu version is only 8.1. To be an early adopter, 8.2.0 has improved the compatibility based on the Windows platform to facilitate the conversion of the platform. At the same time, you can

Http://www.cnblogs.com/LBSer/p/4451471.htmlMap of Beijing using the OSM data for simple publishingFirst, what is OSM?Open Street Maps (OPENSTREETMAP, OSM) is an online map collaboration program that aims to create a world map of content that is free

Characteristics of spatial database Spatial database, is to store and analyze spatial data, there are some GIS systems using space files to achieve, such as MapInfo, shape file format, but the spatial database has its unique advantages, in fact,

Common vector data formats are shapefile, Geojson, CSV, and file database gdb and spatial database PostGIS, regardless of the format of data or how to store, once open the data source, get vector layer (details refer to ogr operation vector data

PSYCOPG Query#Coding:utf-8ImportPsycopg2conn=psycopg2.connect (host='127.0.0.1', port=5432,user='Postgres', password='1', database='PostGIS')Print "opened DB successfully"cursor=conn.cursor () cursor.execute ("Select Name,type,state from WY")

Transfer from original source to Web, Android, iOS map solutionTool CHAIN GIS Toolset Opengeo SuiteContains PostGIS, GeoServer, Geowebcache, Openlayers, and QGIS Map preparation QGISImport, export, edit.