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How to use PostGIS for CAD and GIS?
Using PostGIS/PostgreSQL for Managing CAD and GIS Data This white paper describes how to install, configure, and use a PostGIS database with AutoCAD®Map 3D software and Autodesk MapGuide®Enterprise software.
How to insert a drawing into a geographic file?
The program uses the geographic marker as a base point and inserts the drawing at the appropriate place. If the GIS coordinate systems of both drawings are the same, all other points in the referenced/inserted drawing transform correctly and continue to map to the correct geographic locations.
How to convert AutoCAD DWG files to GIS compatible files?
Click the new Convert Coverage Annotation icon, and a dialog box opens asking to select the annotation layer to convert. Click the radio button to add to a database, and click on the folder to navigate to the database, feature dataset and empty annotation feature class to which you wish to add the annotation.
How can I convert a CAD file to a geodatabase?
Open ArcToolbox > Conversion Tools > To Geodatabase, and select CAD to Geodatabase. Browse to the CAD file on disk and select it as the input. The software automatically creates a feature dataset in the default geodatabase to contain the data, although the name can be changed if desired.
Which is the basis for the PostGIS geographic type?
The basis for the PostGIS geographic type is a sphere. The shortest path between two points on the sphere is a great circle arc. That means that calculations on geographies (areas, distances, lengths, intersections, etc) must be calculated on the sphere, using more complicated mathematics.
How is a gist index used in PostGIS?
GiST (Generalized Search Trees) indexes break up data into “things to one side”, “things which overlap”, “things which are inside” and can be used on a wide range of data-types, including GIS data. PostGIS uses an R-Tree index implemented on top of GiST to index GIS data.
How is PostGIS used as a backend for PostgreSQL?
PostGIS adds support for geographic objects to the PostgreSQL object-relational database. In effect, PostGIS “spatially enables” the PostgreSQL server, allowing it to be used as a backend spatial database for geographic information systems (GIS).
Which is the best FDO Provider for PostGIS?
The FDO Provider for PostGIS available from the Open Source Geospatial Foundation (OSGeo) is not developed and/or tested by Autodesk as of the 2010 version of products. CONTENTS Technical Architecture and Prerequisites ….
What kind of license do I need for PostGIS?
PostGIS is released under the GNU General Public License. It has basic topology support, data validation, coordinate transformation, programming APIs, and much more. Technical Architecture