TransDEM 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.

Additional information can be found in the TransDEM forum.

 transdem.gif (162346 Byte)

A typical TransDEM view, with DEM, raster map and a vector route.

Overview of TransDEM Functionality

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.

Digital Elevation Data (DEM)

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.

More Information


Raster Maps, Plans and Orthophotos

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.

More Information


Vector Data

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.

More Information




System Requirements

Release Notes

Detailed release notes in the TransDEM documentation

Version 2.6

Version 2.5

Version 2.4

Version 2.3

Version 2.2

Version 2.1.3

Version 2.1.2

Version 2.1.1

Version 2.1.1

Version 2.1

Version 2.0

  • 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.

Version 1.3

  • Map Tiles: client for quadtree-organised Mercator projected maps and orthophotos available on web servers

  • Basic support for reading and writing ESRI shape files

Version 1.2

  • 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

Version 1.1
  • Improved handling for georeferencing

  • Direct support for Canadian CDED DEMs

  • Irish coordinate system

  • available in English

Version 1.0

  • Added functionality and simplified usage

Version 0.9

  • Polyline editor

Version 0.8

  • Georeferencing of raster maps

  • Direct Support for SRTM DEMs

Version 0.5.2

  • Direct Support for ASTER DEMs

  • Enhancements for DEM editing

Version 0.5.1

  • First published version

  • Basic DEM editing

  • Visualisation of vector route data

© 2003 - 2015 Roland Ziegler