Creates a piecewise-linear hinge feature.
Forward hinge: eval(i) = (values[i] > min_knot) ? (values[i] - min_knot) / (max_knot - min_knot) : 0.
Reverse hinge: eval(i) = (values[i] < max_knot) ? (max_knot - values[i]) / (max_knot - min_knot) : 0.
Usage
create_hinge_feature(values, name, min_knot, max_knot, is_reverse = FALSE)
Arguments
- values
Numeric vector of environmental variable values
- name
Feature name/identifier
- min_knot
Lower knot of the hinge
- max_knot
Upper knot of the hinge (must be > min_knot)
- is_reverse
If TRUE, use reverse hinge; if FALSE (default), use forward hinge
Value
External pointer to HingeFeature object
