OSGeo sample dataset for research, development and education
Presentation | Presented
- Helena Mitasova, North Carolina State University, Raleigh, NC, USA
- Markus Neteler, ITC-irst, Trento, Italy
Collaborative work on OSGeo educational materials, development, and testing of geospatial software can be done more efficiently using a common dataset. Based on over 10 years of experience with the GRASS Spearfish data and motivated by the need for its state-of-the-art update we have prepared the first release of the OSGeo sample dataset. We have moved the location from the sparsely populated South Dakota, home of Spearfish, to rapidly growing North Carolina (NC) that provides wealth of local and statewide data on-line for free, including standardized metadata files. NC has recently formed an OSGeo user group and the NCGIS community has provided greatly appreciated help with the data.
The data are currently provided as (a) ready-to-use GRASS LOCATION, (b) set of raster and vector data in their original GIS-supported formats, (c) links to data sources where additional data can be obtained. Three hierarchical levels of data are used: (1) statewide (500m resolution); (2) more detailed county subset covering city and rural environments (30-10m resolution), and (3) high resolution small watershed (1-2m). The dataset includes raster maps (several types of DEMs, landuse, LANDSAT, watersheds, geology, etc.) and vector maps (roads, streams, lidar point clouds, schools, firestations, bus routes, soils, planimetry, census blocks and many others). We illustrate the data set on a broad range of applications from the core geospatial processing (format conversions, projections, interpolation, patching) through analysis (terrain, networks, map algebra) and image processing, to modeling of landscape processes and 3D dynamic visualization.