ominas_map__define.pro

NAME: ominas_map__define PURPOSE: Class structure fo the MAP class. CATEGORY: NV/LIB/MAP CALLING SEQUENCE: N/A FIELDS: projection: String giving the map projection, e.g., RECTANGULAR, ORTHOGRAPHIC. Map transformation functions are named map_image_to_map_<projection> and map_map_to_image_<projection>. Methods: map_projection, map_set_projection units: 2-element array (lat,lon) to converts map radians to other units (map radians/unit). Methods: map_units, map_set_units size: 2-element array giving the map size in pixels. Methods: map_size, map_set_size scale: Map scale (units/angle) at the center of the map. Methods: map_scale, map_set_scale center: 2-element array giving the map coordinates of the center of the map. Methods: map_center, map_set_center origin: 2-element array giving the image coordinates corresponding to the center of the map. Methods: map_origin, map_set_origin range: 2x2-element array giving the map coordinates of the lat/lon ranges of the map. Methods: map_range, map_set_range rotate: Code specifying a rotation to be applied to the map, as in the IDL 'rotate' function. graphic: Flag indicating whether latitudes are represented using the planetocrntric or planetographic convention. west: Flag indicating that longitudes are measured to the west. radii: 3-element array giving ellipsoid radii to use in projections. Only the relative ratios are important. All elements are set to 1 by default. STATUS: Complete MODIFICATION HISTORY: Written by: Spitale, 1/1998