ECW file header

There is a tool by Intergraph/ERDAS for modifying ECW headers called "ECW Header Editor". If you need to apply a new insertion point you can just open the ECW file, enter the new coordinates and save the changes back to the file.

Command line version is available as well. The tool is part of a package called "Apollo Essentials".

Current download URL : 

http://download.intergraph.com/downloads/erdas-apollo-essentials---image-web-server-2011-utilities-version-11.0.4

LV95 Reference frame - world files for raster

If you need to transform world files as part of the the reference frame change (LV03 --> LV95) - I have written a small tool which does the transformation, either by performing a transformation using REFRAME or by performaning a simple translation. Let me know if the tool would be helpful - I can send it by email.

AutoCAD Map - swiss reference frame LV95

The reference frame in Switzerland is changing. For all Map users in Switzerland this information provided by Autodesk Support might be of interest. It concerns the Map internal coordinate systems library and transformation algorithm between those systems with regards to LV03 / LV95:

"Map 3D Geodätische Transformation von Datum CH1903 nach CH1903+ (LV03 nach LV95) benutzt NTv2 grid File mit gitterbasierter Interpolation. Es wird keine strenge Transformation mit dem FINELTRA Algorithmus angewendet. Die Genauigkeit bei gitterbasierte Interpolation ist reduziert und ist bei entsprechender Anwendung zu berücksichtigen. Ich nehme an das in der amtlichen Vermessung NTv2 nicht genügt und daher zwingend FINELTRA Algorithmus genommen werden muss."


Map 2013, SP2