Churfirsten multi-resolution DEMs

Version 1.0, May 21, 2020

Prepared by Tom Patterson, US NPS (retired)

Resolutions (meters)

30, 60, 120, 250, 500, 1,000, and 2,000

Size (height samples)

2,500 x 1,500

Center point

47.1436111N, 9.3486111E


Bonne / WGS84

Latitude of origin: 47.25N

Central meridian: 9.4E

Data sources

All digital elevation models (DEM) derive from ViewFinderPanoramas data. The 30, 60, 120, and 250 meter DEMs derive from 1-arc second data. The 500, 1000, and 2,000 meter DEMs derive from 3-arc second data.

Data processing

The processing of DEMs occurred in Natural Scene Designer Pro, QGIS, and Geographic Imager software and involved converting between NSD, IMG, ASCII Grid, and TIF formats. Slight elevation variations exist, ranging up to a few decimeters, between DEMs in each of the multi-resolution series. We used bicubic interpolation for downsampling and did not apply additional filtering or generalization to the DEMs.

Data issues

Numerous horizontal artifacts are present in the 30m DEM and are most noticeable in flat areas. We made no attempt to correct these imperfections.


Creative Commons Attribution 4.0 International

The DEMs deriving from ViewFinderPanoramas have been made available by Jonathan de Ferranti under the Creative Commons Attribution 4.0 International license.