PLTSYM: A FORTRAN Computer System to Plot Canadian Symbol Location Maps for Hydrogeochemical and Stream-Sediment Reconnaissance Data

摘要

The PLTSYM system plots sample location maps on a line plotter at virtually any scale with data point values represented by one of 15 Canadian symbols. Sample location data can be in latitude/longitude or (X,Y) coordinate form. Five map projections are available for converting latitude/longitude into easting/northing coordinates. Data values can be sorted into classes using any one of four different class interval options. (ERA citation 08:001680)