TransDEMTransDEMTransDEM is a central pre-processing tool for route building based on geo data. TransDEM handles digital elevation models (DEM, height data), raster maps, plans and orthophotos and provides vector data conversion and basis editing features.
A typical TransDEM view, with DEM, raster map and a vector route.
TransDEM converts all data to the UTM map projection. This leads to a uniform Cartesian coordinate system, which via simple mathematical translation can be used directly in Zusi and railway simulators like Trainz. For route projects crossing UTM zone boundaries TransDEM offers conversion, to transform coordinates of the adjacent zone into the current zone.
TransDEM spatial adjustments to a DEM or complete DEM generation from scratch. The technique behind this is the Triangulated Irregular Network – TIN. Missing DEM points can be complemented or existing DEM points can be erased, e.g. for cropping a DEM.
Direct read support for orbital SRTM DEMs (hgt format), 3 arc sec and 1 arc sec, automatic conversion to UTM
Direct read support for orbital ASTER DEMs (geotiff format), 30m, UTM
Direct read support for Canadian CDED DEMs, automatic conversion to UTM
Direct read support for USGS NED DEMs, automatic conversion to UTM
Read and write support for MicroDEM dem format, version 1 and 2
Import and export of elevation data in xyz format
Merging of DEMs
DEM editing (spatial adjusting) with a network or arbitrarily placeable control points, so-called Triangulated Irregular Network – TIN
Creation of a DEM from scratch based on contour lines, using the TIN technique
DEM hole filling with various options
DEM cropping and resampling
Transformation to adjacent UTM zone
Elevations in metres or feet
Topographic raster maps with various international and national coordinate systems can be georeferenced and used as a background template for DEM or vector data editing.
Support for common bitmap formats: .bmp, .jpg, .gif, .png, .tif
Georeferencing (aligning with the UTM grid) via 3(+1) reference points (affine transformation)
Simplified georeferencing for orthogonally aligned raster maps with known corner coordinates
Various coordinate systems in addition to UTM: European, American and Australian / New Zealand grids
Concurrent visualisation of multiple raster maps, with varying scale.
WMS client (Web Mapping Service), automatic georeferencing
Semi-automatic georeferencing of Google EarthTM Orthophotos using placemarks.
Route data can be created/edited as polylines, read and written in various file formats and can be visualised on top of a DEM and raster maps.
Basic format for vector data is Zusi 2 .str. Can be used independently of Zusi
(Limited) support for .ovl (Geogrid/Top50/AMap), dxf (AutoCAD), .xyz, .mkr (MSTS marker files) and gpx (GPS data exchange)
Basic interactive editor for creating and editing polylines to trace/digitise lines shapes
Distance measuring
in electronic form, .pdf format
Contents of the manual: Introduction and overview, reference and tutorial sections, 146 pages
Detailed release notes in the TransDEM documentation
Extended support for GeoTIFF and TIFF formats
New crop feature to erase white margin on raster maps
Swedish and Polish coordinate systems
Basic support for WMS 1.3
3GB allocatable memory for 32 bit Windows, 4GB for 64bit Windows
Fresh look for TransDEM main menu and toolbars.
Map Tiles: client for quadtree-organised Mercator projected maps and orthophotos available on web servers
Basic support for reading and writing ESRI shape files
Direct support for USGS DEMs
Several more coordinate system from Europe, America and Australia / New Zealand
Semi-automatic georeferencing of Google EarthTM images
WMS client for direct access to compatible online map data bases
Improved handling for georeferencing
Direct support for Canadian CDED DEMs
Irish coordinate system
available in English
Added functionality and simplified usage
Polyline editor
Georeferencing of raster maps
Direct Support for SRTM DEMs
Direct Support for ASTER DEMs
Enhancements for DEM editing
First published version
Basic DEM editing
Visualisation of vector route data
© 2003 - 2010 Roland Ziegler