Vector Data
In a GIS, geographical features are often expressed as vectors, by considering those features as geometrical shapes.
Different geographical features are expressed by different types of geometry:
- Lines
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One-dimensional lines or polylines are used for linear features such as rivers, roads, railroads, trails, and topographic lines.
- Polygons
- Two-dimensional polygons are used for geographical features that cover a particular area of the earth's surface. Such features may include lakes, park boundaries, buildings, city boundaries, or land uses. Polygons convey the most amount of information of the file types. Polygon features can measure perimeter and area.
Rural Topography, Clutter and Building Data
- 3D vector oriented database
- Walls as planar objects with polygonal shape
- Arbitrary location and orientation in space
- Individual material properties
Urban Buildings
- Each polygon can have an arbitrary number of corners.
- Each polygon must have at least three corners to define a valid polygon (building).
- Each building has a uniform height (polygonal cylinder). The height is either relative to the ground or absolute above sea level. Absolute height values require a topographical database additionally.
- Each building has a single set of material properties which are used for the entire building.
- Flat rooftops are used (horizontal planes).
- Only vertical walls (parallel to the z-axis) are allowed.
- The polygon of a building must not intersect itself.
- The polygon of a building might intersect other polygons (buildings).
Indoor 3D Objects
- 3D vector oriented database
- Walls as planar objects with polygonal shape
- Arbitrary location and orientation in space
- Individual material properties
- Subdivisions with different material properties to model doors and windows
Time-Variant
- Motion can be assigned to all objects.
- Translation and rotation are possible.
Tunnels
Tunnel databases have a special layout and can also be used in ProMan. These databases are generated with the TuMan component.