2DEllipseReplacer

Category: Manipulators

Replaces the geometry of the feature with a two-dimensional ellipse whose shape is set by the parameters, which can be either constant floating point values or the values of existing attributes.  

The center x and y parameters set the origin of the ellipse. If these values are blank, and the input features are points, the existing feature x/y values will determine the center of the ellipses. If the parameter values are blank, and the input features are not points, the operation is undefined.

The primary and secondary axis set the radii of the ellipse. Note that the primary axis need not be larger than the secondary, however, the rotation angle is always measured from the x axis to the primary axis. To make a circular arc, set both the primary and secondary axis to the same value.

The rotation angle is measured in degrees counterclockwise from horizontal, and measures the rotation of the primary axis from horizontal.

Each of the parameters may either be entered as a number, or can be taken from the value of a feature attribute by selecting the attribute name from the pull-down list.

If the parameters for the ellipse are not known and need to be calculated from a linear feature's geometry, the ArcEstimator should be used.