pvlib.shading.ground_angle#

pvlib.shading.ground_angle(surface_tilt, gcr, slant_height)[source]#

Angle from horizontal of the line from a point on the row slant length to the bottom of the facing row.

The angles are clockwise from horizontal, rather than the usual counterclockwise direction.

Parameters:

surface_tilt (numeric) – Surface tilt angle in degrees from horizontal, e.g., surface facing up = 0, surface facing horizon = 90. [degree]
gcr (float) – ground coverage ratio, ratio of row slant length to row spacing. [unitless]
slant_height (numeric) – The distance up the module’s slant height to evaluate the ground angle, as a fraction [0-1] of the module slant height [unitless].

Returns:

psi (numeric) – Angle [degree].