Axis Direction standard values
Axis positive direction is north. In a geographic or projected CRS, north is defined through the geodetic datum. In an engineering CRS, north may be defined with respect to an engineering object rather than a geographical direction.
north
Axis positive direction is approximately north-north-east.
northNorthEast
Axis positive direction is approximately north-east.
northEast
Axis positive direction is approximately east-north-east.
Axis positive direction is pi/2 radians clockwise from north.
east
Axis positive direction is approximately east-south-east.
eastSouthEast
Axis positive direction is approximately south-east.
southEast
Axis positive direction is approximately south-south-east.
southSouthEast
Axis positive direction is pi radians clockwise from north.
south
Axis positive direction is approximately south-south-west.
southSouthWest
Axis positive direction is approximately south-west.
southWest
Axis positive direction is approximately west-south-west.
westSouthWest
Axis positive direction is 3pi/2 radians clockwise from north.
west
Axis positive direction is approximately west-north-west.
westNorthWest
Axis positive direction is approximately north-west.
northWest
Axis positive direction is approximately north-north-west.
northNorthWest
Axis positive direction is up relative to gravity.
up
Axis positive direction is down relative to gravity.
down
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.
geocentricX
Axis positive direction is in the equatorial plane from the centre of the modelled earth towards the intersection of the equator and the meridian pi/2 radians eastwards from the prime meridian.
geocentricY
Axis positive direction is from the centre of the modelled earth parallel to its rotation axis and towards its north pole.
geocentricZ
Axis positive direction is towards the future.
future
Axis positive direction is towards the past.
past
Axis positive direction is towards higher column numbers.
columnPositive
Axis positive direction is towards lower pixel column numbers.
columnNegative
Axis positive direction is towards higher row numbers.
rowPositive
Axis positive direction is towards lower pixel row numbers.
Axis positive direction is right in display.
displayRight
Axis positive direction is left in display.
displayLeft
Axis positive direction is towards top of approximately vertical display surface.
displayUp
Axis positive direction is towards bottom of approximately vertical display surface.
displayDown