CsmapAttributeReprojector

Choose from recently accessed coordinate systems, or click the browse button to access the Coordinate System Gallery.

Specifies what geographic transformation will be used to convert points from the source datum to the destination. If set to <Auto>or left blank, FME will attempt to choose an appropriate transformation. If set to <None>, the NULL_FME transformation will be used which does not alter the value of any coordinates.

Note: <Auto> and <None> are GUI only values. Use the alternative blank string and NULL_FME respectively when passing in as an attribute.

This parameter determines how Z values will be handled.

• Ignore heights and leave them unchanged: The Z attribute will not be enabled.
• Heights are relative to the ellipsoid(s) or geocentric: Z values will be treated as ellipsoid heights with the same units as the horizontal units (or meters, for geographic coordinate systems). If the source coordinate system is geocentric, coordinates will be converted to geographic+ellipsoid height before being processed. If the destination coordinate system is geocentric, coordinates will be converted to geocentric after being processed.

• Geocentric or ellipsoid height -> Orthometric height: Z values will be converted from ellipsoid height to orthometric (sea level) height given the specified geoid height grid. Z units will be the same as the horizontal units (or meters, for geographic coordinate systems). If the source coordinate system is geocentric, coordinates will be converted to geographic+ellipsoid height before being processed.

  Example: [Geocentric (datum A) ->] LL + ellipsoid height (datum A) -> LL + ellipsoid height (datum B) -> LL + orthometric height (datum B)

• Orthometric height -> Geocentric or ellipsoid height: Z values will be converted from orthometric (sea level) height to ellipsoid height given the specified geoid height grid. Z units will be the same as the horizontal units (or meters, for geographic coordinate systems). If the destination coordinate system is geocentric, coordinates will be converted to geocentric after being processed.

  Example: LL + orthometric height (datum A) -> LL + ellipsoid height (datum A) -> LL + ellipsoid height (datum B) [-> Geocentric (datum B)]

• NAD27 heights in NGVD29; NAD83 heights in NAVD88. VERTCON will be used to convert between NAD27 (NGVD29) and NAD83 (NAVD88). Z values have the same units as the horizontal units (or meters, for geographic coordinate systems).

This parameter determines which geoid height grid will be applied to the Z values.

Choose which X, Y, and Z attributes to reproject.