file extension BT

VTBuilder

• a tool for viewing and processing many kinds of geospatial data
• Elevation Data
  • merges and resamples multiple elevation files
  • import elevation grids from DEM, SDTS DEM, MicroDEM, GTOPO30, SRTM, DTED, CDF/netCDF, PNG, TIF, GeoTIFF, PGM, Surfer GRD, TerraGen, raw data, ArcInfo ASCII/Binary, SRTM HGT, and many other formats
  • export elevation grids to ArcInfo ASCII Grid, GeoTIFF, TerraGen, BMP, STM, MSI Planet, VRML ElevationGrid, RAW/INF for MSFS, ChunkLOD (.chu), PNG 16-bit, 3TX.
  • reads and writes Binary Terrain (BT)
  • import TIN data from DXF
  • lets you view and define an area for merging and resampling BT format, which can be used by the VTP Terrain Library and Enviro runtime
  • supports undersea data, and conversion of data between coordinate systems, such as merging of DEM files across a UTM boundary
• Road Data
  • reads road centerline vectors from USGS DLG, ESRI SHP, NTF and other GIS formats
  • does cleanup processing on the road network topology
  • allows the user to define intersection behavior and road attributes including number of lanes and direction of traffic flow
  • writes to RMF which can be used by the vtlib Library and Enviro runtime
• Building Data
  • reads and writes VTST files
  • select, move and delete buildings
  • edit building attributes (shape, number of stories, color, etc.)
• Vegetation Data
  • imports land-use and vegetation-coverage data from USGS LULC and ESRI SHP files
  • imports species lists and vegetation zones (biotypes) from text/XML files
  • exploits all of the above to do automated placement of vegetation and export to VF files
• Multi-layer Formats
  • imports multiple layer types from compound file formats - TIGER (roads, hydrography) and NTF (roads, built structures)
• Image Data
  • you can import several image formats for viewing in conjunction with other layers