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What do you mean by PostGIS?
PostGIS is an Open Geospatial Consortium (OGC) compliant software used as an extender for PostgreSQL, which is a form of object-relational database. While PostGIS is free and open source, it is used in both commercial (e.g., ArcGIS) and open source software (e.g., QGIS).
Where is Postgres installed on Linux?
conf and other configuration files are stored in /etc/postgresql/9.3/main. After all, /etc is where configuration files are stored in a linux system. However, why place the database storage area in /var/lib?
What are the functions of the PostGIS object?
The functions given below are the ones which a user of PostGIS is likely to need. There are other functions which are required support functions to the PostGIS objects which are not of use to a general user. PostGIS has begun a transition from the existing naming convention to an SQL-MM-centric convention.
How to get the type of a geometry in PostGIS?
ST_BoundingDiagonal — Returns the diagonal of a geometry’s bounding box. ST_ExteriorRing — Returns a LineString representing the exterior ring of a Polygon. ST_GeometryN — Return the Nth geometry element of a geometry collection. ST_GeometryType — Returns the SQL-MM type of a geometry as text.
What’s the easiest way to get data into PostGIS?
If you can convert your data to a text representation, then using formatted SQL might be the easiest way to get your data into PostGIS. As with Oracle and other SQL databases, data can be bulk loaded by piping a large text file full of SQL “INSERT” statements into the SQL terminal monitor.
How to install PostGIS on a Windows computer?
The below options follow the basic sequence of the postgresql windows installer. Once PostgreSQL is installed, launch Application Stack Builder from (Start->Programs->PostgreSQL 9.5->Applciation Stackbuilder and pick the version of PostgreSQL you want to install PostGIS on and the version of PostGIS to install.