Viva Series, Coordinate Systems 155
Residuals Available for transformations with control points.
Manually entered transformations do not have
control points. The method by which residuals are
distributed throughout the transformation area. The
transformation results become more realistic and any
strain is dispersed in the transformation.
1/distance,
1/distance²,
1/distance³/²
Distribute the residuals of the control points
according to the distance between each control point
and the newly transformed point.
Multiquadratic Distributes the residuals using a multiquadratic inter-
polation approach.
Transformation Selectable list The type of transformation.
Pre Transform Selectable list Available when editing a coordinate system and for
Twostep transformations. The name of a preliminary
3D transformation, which, together with the selected
projection, is used to obtain preliminary grid coordi-
nates for a final 2D transformation.
Ellipsoid Selectable list Available unless projection Type: Customised. The
local coordinates are based on this ellipsoid.
Projection Selectable list The map projection.
Geoid model Selectable list The geoid model.
CSCS model Selectable list The Country Specific Coordinate System model.
Field Option Description
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