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Upper
Paraguay River Basin Floodplain Pilot Project Begins A core technical group standardized the project on ERDAS geographic imaging software and ESRI GIS products. GeoTIFF and ERDAS IMAGINE were selected as the raster data file formats, and shapefiles and ARC coverages were chosen as the standard vector formats. DBF was confirmed as the relational database format, UTM Zone 21 is the map projection standard, and WGS 84 is the standard datum and spheroid. DU started the image processing in Memphis, Tennessee, as plans developed for coordinating and standardizing methods and data formats between partners. Six satellite imagery scenes covering the same area but collected on different dates were purchased: three from CONAE in Argentina; two from INPE in Brazil; and one from the EROS Data Center in Sioux Falls, South Dakota, USA. All imagery was checked for quality using ERDAS IMAGINE, then georeferenced and coregistered based on the established standards. A Landsat 7 scene was selected as the master data layer. Once the project was under way, production moved to South America where partners used the ArcView Image Analysis and ArcView Spatial Analyst extensions with ArcView 3.2 to analyze water level change, map burn scars and new roads, etc., and to compare the various data sets.
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