# Model Editor Parameters

Parameter | Description
--- | ---
Threshold | Specifies the lowest score allowed to be a match for the model.
Occurrences | Specifies how many instances of a model should be detected. Enable the all checkbox, and the tool will detect all model instances.
Search Space
Constrain | When enabled, the Constrain checkbox limits model matches to the Range specified for the Degree of Freedom (DOF) parameter. If disabled, models will be matched regardless of the Range specified for the DOF parameter, and the Range values will be grayed out to indicate that they are not active.
Angle | Specifies the possible orientations the model may exhibit.
Scale | Specifies the amount of deviation in the overall model size, and in the deviation of inter-node spacing, that will be allowed for a match. For example, a value of [0.8, 1.2] would specify that the overall size of the model must be between 80% and 120% of the nominal size, and the spacing between any two nodes in the model must also be between 80% and 120% of the nominal spacing.
Aspect-Ratio | Specifies the amount of deviation in the overall model aspect ratio, and in the deviation of inter-node ratios, that will be allowed for a match.
Shear | Specifies the amount of deviation in the shear mapping of the model, and in the deviation of inter-node shearing, that will be allowed for a match.
X | The X and Y parameters specify the search region within the View, expressed in percentage terms. For example, to search only the upper-left quadrant of a View, you would specify [0%, 50%] for both X and Y. With these settings, only model matches where all of the nodes lie within the specified region will be returned. In the example shown below, A is matched, but B is outside of the X and Y range, so it is not matched with A to form the A-B model.
Y