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The related OGR library (which lives within the GDAL source tree) provides a similar capability for simple features vector data [16]. UMN MapServer can access TIFF/GeoTIFF, EPPL7 [37], and many other formats via GDAL, and ESRI Shapefiles, PostGIS, ...
In general, the EPPL7 GIS system was used to produce, coordinate, and display these data, and a variety of statistical packages (SPSS, SAS, SYSTAT) were used to calculate numerical values for subsequent analyses.
 See also: Image, Location, Region, Environment, GIS
  
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