Lattice Database
Not Lite, Not UAV
A lattice database in TerraModeler is a collection of grid-based files placed in the same directory on a hard disk. The lattice files are typically produced by a national land survey organization that manages elevation data covering the whole country. This type of data provides an inexpensive way to create a small-scale surface model of large areas or a quick way to derive approximate elevation values for any location in the country.
TerraModeler offers some dedicated tools which can extract elevation values from a collection of lattice files. The tools search for lattice files in a directory that is specified in Lattice database category of the TerraModeler Settings. All tools require that the CAD file uses the same coordinate system as the lattice files were created with.
Supported lattice file formats include:
•Disimp - used by the National Land Survey of Finland.
•Ordnance Survey NTF - used by the UK Ordnance Survey.
•Intergraph GRD - has to be orthonormal.
To |
Use command |
|---|---|
Draw boundaries for the lattice database area |
|
View lattice database elevation values |
View Elevation tool |
Draw contours for lattice database files into the CAD file |
|
Triangulate lattice database points |
