The direction of positive increase in the coordinate value for a coordinate system. This axis direction enumeration is based on the Axis definition the OpenGIS Abstract Specification; Topic 2= Spatial referencing by coordinates.

Enumeration Members

COLUMN_NEGATIVE: 23

Axis positive direction is towards lower pixel column.

COLUMN_POSITIVE: 22

Axis positive direction is towards higher pixel column.

DISPLAY_DOWN: 29

Axis positive direction is towards bottom of approximately vertical display surface.

DISPLAY_LEFT: 27

Axis positive direction is left in display.

DISPLAY_RIGHT: 26

Axis positive direction is right in display.

DISPLAY_UP: 28

Axis positive direction is towards top of approximately vertical display surface.

DOWN: 18

Axis positive direction is down relative to gravity

EAST: 5

Axis positive direction is π/2 radians clockwise from north.

EAST_NORTH_EAST: 4

Axis positive direction is approximately east-north-east.

EAST_SOUTH_EAST: 6

Axis positive direction is approximately east-north-east.

GEOCENTRIC_X: 19

Axis positive direction is in the equatorial plane from the centre of the modelled Earth towards the intersection of the equator with the prime meridian.

GEOCENTRIC_Y: 20

Axis positive direction is in the equatorial plane from the centre of the modelled Earth towards the intersection of the equator and the meridian π/2 radians eastwards from the prime meridian.

GEOCENTRIC_Z: 21

Axis positive direction is from the centre of the modelled Earth parallel to its rotation axis and towards its north pole.

NORTH: 1

Axis positive direction is north.

NORTH_EAST: 3

Axis positive direction is approximately north-east.

NORTH_NORTH_EAST: 2

Axis positive direction is approximately north-north-east.

NORTH_NORTH_WEST: 16

Axis positive direction is approximately north-north-west.

NORTH_WEST: 15

Axis positive direction is approximately north-west.

ROW_NEGATIVE: 25

Axis positive direction is towards lower pixel row.

ROW_POSITIVE: 24

Axis positive direction is towards higher pixel row.

SOUTH: 9

Axis positive direction is π radians clockwise from north.

SOUTH_EAST: 7

Axis positive direction is approximately south-east.

SOUTH_SOUTH_EAST: 8

Axis positive direction is approximately south-south-east.

SOUTH_SOUTH_WEST: 10

Axis positive direction is approximately south-south-west.

SOUTH_WEST: 11

Axis positive direction is approximately south-west.

UP: 17

Axis positive direction is up relative to gravity.

WEST: 13

Axis positive direction is 3π/2 radians clockwise from north.

WEST_NORTH_WEST: 14

Axis positive direction is approximately west-north-west.

WEST_SOUTH_WEST: 12

Axis positive direction is approximately west-south-west.