User's Guide and Reference

Map projection parameters


Table 64. Map projection parameters
Parameter Description

central_meridian

The line of longitude chosen as the origin of x-coordinates.

scale_factor

Used generally to reduce the amount of distortion in a map projection.

standard_parallel_1

A line of latitude that has no distortion generally. Also used for "latitude of true scale."

standard_parallel_2

A line of latitude that has no distortion generally.

longitude_of_center

The longitude that defines the center point of the map projection.

latitude_of_center

The latitude that defines the center point of the map projection.

latitude_of_origin

The latitude chosen as the origin of y-coordinates.

false_easting

Added to x-coordinates. Used to give positive values.

false_northing

Added to y-coordinates. Used to give positive values.

azimuth

The angle east of north that defines the center line of an oblique projection.

longitude_of_point_1

The longitude of the first point needed for a map projection.

latitude_of_point_1

The latitude of the first point needed for a map projection.

longitude_of_point_2

The longitude of the second point needed for a map projection.

latitude_of_point_2

The latitude of the second point needed for a map projection.

longitude_of_point_3

The longitude of the third point needed for a map projection.

latitude_of_point_3

The latitude of the third point needed for a map projection.

landsat_number

The number of a Landsat satellite.

path_number

The orbital path number for a particular satellite.

perspective_point_height

The height above the earth of the perspective point of the map projection.

fipszone

State Plane Coordinate System zone number.

zone

UTM zone number.


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