Locator Tolerance The maximum distance in calibrated units by which a matched contour can deviate from either side of its expected position. A value from 1 - 100. Nominal Rotation Rotation constrains the rotation range the Locator will search for. It can specify whether the rotation of a recognized instance must fall within the range set or be equal to the nominal value set. When enabled, a nominal value is applied (no rotation is accepted); otherwise, the range is used. By default, the Locator finds objects within a range of rotation values between -180 and 180 degrees. Allowable rotation can be restricted by decreasing the range of rotation values.
The rotation range spans counterclockwise from the minimum to the maximum angle. Use Nominal When Use Nominal is checked, the Nominal value is applied. Otherwise, the range set by Maximum and Minimum is used. If you want to search for an instance at a nominal rotation but need to com- pute its actual rotation, disable the Use Nominal checkbox and enter a small range, such as 89 to 91. Nominal Search for objects at a specific angle of rotation. Note that, when a nominal value is used, the Locator does not compute the actual rotation of instances; instead, the instances are positioned using the Nominal rotation value. Nom- inal is a value, in degrees, from -180 to +180.
Maximum A value, in degrees, from -180 to +180. Minimum A value, in degrees, from -180 to +180. ACEUser's Guide, 3.6.x, 18316-000 Rev A Page 568