Friday, December 9, 2011

Some Facts

.A 2.5D geometry is a 2D geometry with an elevation (Z-ordinate) component. 


Design Web Format?. A file format specifically designed for storing and transmitting design data.


A rectangle bounding a map, the size of which is determined by the minimum and maximum map coordinates.


The header is a an XML file that specifies information about a resource, folder, or repository. This includes the permissions required to access the item. For a folder or root level, these permissions also affect any items below it that set permissions to be inherited from the parent.


SRS stands for Spatial Reference System. A spatial reference system "describes the coordinate space in which the object is defined."

Symmetric difference (A,B) = union(A,B) - intersection(A,B).


Well Known Text format. A method used to exchange geometry information in textual form.

Web Map Server interface. An OpenGIS specification for georeferenced maps.