Case study "Baranja hill":

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). 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

Case study "FishCamp":

The case study "fishcamp" is of size 1x2 km; located at 37.46353 N; 119.6119 W. The coordinate system used is the UTM NAD83 zone 11 North i.e. EPSG:26911. The complete dataset was obtained from the USGS National Map seamless server. The dataset comprises: DEM2m.asc --- 2.5 m DEM derived from the LiDAR survey (ground reflectance); DEMNED03.asc --- 10 m National Elevation Dataset; DEMSRTM1.asc --- 1 arcsec SRTM DEM (finilized); lidar.shp --- subsampled LiDAR point measurements (the original dataset consist of over 5 milion of points); orthoimg.lan --- National Agriculture Imagery Program (NAIP) Orthoimagery for Zone 11; topo24k.lan --- 1:24k topo-map "White Chief Mountain, CA (37119-D5-TF-024); contours.shp --- contours digitized from the topo24k map; tstreams.shp --- contour lines digitized from the topo map; Here you can obtain the complete dataset.

10 and 25 m DEMs	2.5 m LiDAR DEM

1 m color orthoimage	Topo-map 1:24k (contour lines)

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.