Case study "Baranja hill":

All contributors to the geomorphometry.org are invited to use the "Baranja Hill" 25 m DEM (and/or 25 m SRTM DEM) to demonstrate derivation of various parameters and objects. All raster images are prepared in the ArcInfo ASCI grid format. The vector maps are prepared as shape files. For geostatistical analysis and modelling purposes, please use the following variogram model: model = exponential (omnidirectional), nugget parameter = 0, sill parameter = 1960, range parameter = 1057. In addition to the GIS layers, you might also need to use the field observations. Courtesy of the Croatian State Geodetic Department. A complete description of the dataset is available here. You can also direclty download the complete directory with all GIS layers. All maps are projected using the coordinate system "Zone 6" (available in ILWIS format, in ESRI format). The contour lines are available also in the KML format.

25 m DEM	25 m SRTM	Topomap 1:5K	Contours	Spot heights	Elevations

Landsat	Orthophoto	Landcover	Geoforms	Streams	Roads

Other datasets:

Authors can also use a very small, 6x6 pixels DEM to demonstrate calculations and effects of different algorithms. This is also a sound way to cross-check the algorithms implemented in various packages.