Fitness function assigning fitness 1 to optimum trait value, with fitness decaying away from the optimum. More...
The decay can be polynomial:
or Gaussian:
parameter | default | notes |
---|---|---|
quantitative_trait = <id> | none | required |
optimum = <double> | none | required |
radius:power = <double> <double> | none | optional* |
gaussian_width = <double> | none | optional* |
*Exactly one of radius:power or gaussian_width must be specified.
Example: example_stepping_stone.txt
Note: the term 'width' to parametrize Gaussian fitness decay comes from Lande 1976 Evolution (Natural Selection and Random Genetic Drift in Phenotypic Evolution)