RiskWare  On-line Reference Manual

Release Level 1.9
Release Date 2000 06


Revision Level 1.0




GIS data structures and formats

The standard GIS of AirWare accepts both raster and vector formats.

While using its own proprietary format for maximum efficiency and performance, the AirWare GIS can integrate data from a number of external data formats and GIS systems such as Arc/Info and GRASS.

The basic GIS data formats that can be filtered easily are

  • Arc/Info export (*.e00)
  • GRASS (DLG) format
The data to be imported must be carefully checked for a consistent topology.

The AirWare GIS uses

  • vector data (lines and polygons)
  • rasters and regular grids (cell-grids)
For the latter, a range of data types including dynamically generated (model results) coverages and interpretations are supported. For a more detailed description, see the documentation of the data filters for GIS data import.

Projections:

The original raw GIS data can, in principle, be in any projection as long as this is known and documented. For the actual application on a regional and local scale, the systems expect an equidistant and rectangular coordinate system (Gauss-Kgrüger) in units of meters.

This is required for the display of model results, which in most cases are computed on a regular, quadratic grid.


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