Projection : State Plane Coordinate System Characteristics: rectangular coordinates Earth model: Only two earth models are supported for State Plane coordinates:
Defining the MAPUNITS:
State Plane Coordinate System coordinates require a zone number to be defined. This would be defined in the MAPUNITS parameter and would be in the range of 0101 (or 101 for Alabama, East in the following examples) to 5400 (Guam). The units of the coordinates are taken from the State Plane code used: SPCS for metres; SPAF for U.S. Survey Feet; SPIF for International Feet. See the SPCS ZONES section for a list of the State Plane Zones and their suggested units.
MapUnits "spcs 101" ! Standard name MapUnits "spcs 101 e0" ! Standard name and ellipsoidOther parameters:
Depending on the defined (or default) earth model, PROSET will require a text file that is normally stored in /pci/etc on UNIX platforms. (The search path may be different, depending on the platform.) If these files are there, the NAD1927 and/or NAD1983 parameters may be defaulted, in which case PROSET should be able to find them. (PROSET uses the WDFF parameter, substituting "etc" for "wdb" (or "ETC" for "WDB"), to make up the search path.) If the pci account is not in for example /pci the text files would not be found and the program would exit. In any case the search path and filename can be explicitly defined with the NAD1927 and NAD1983 parameters.
EASI>nad1927 = "nad1927_text_file" EASI>nad1983 = "nad1983_text_file"Possible errors:
E331, "Invalid earth model defined for the projection" - In setting
up for the projection, the earth model is not E0 (Clarke
1866, NAD 1927) or E8 (GRS 1980, NAD 1983).
E100, "Invalid data" - In setting up for the projection, an invalid
State Plane zone was entered.
E328, "No zone was defined or could be derived for the projection" -
In setting up for the projection, the State Plane zone
was not specified in MAPUNITS.
See Also: SPCS ZONES