API field
Ground IAM angle
The angle at which the ground light's angular response is read
What it is
Selects the incidence angle at which the mask-conditioned integrals read the angular-response curve for each direction of the ground in front of the plane. It is read only with those integrals.
Typical values and how to get it
Chosen on the Model tab.
Values
Horizontal direction = horizontal_direction (default): each ground direction read at the incidence angle of the horizontal direction with the same azimuth · True incidence angle = true_angle: each ground direction read at its own incidence angle
API
iam.ground_iam_angle