compute_ppd#
- stimupy.utils.compute_ppd(screen_size, resolution, distance)#
Compute the pixels per degree in a presentation setup i.e., the number of pixels in the central one degree of visual angle
- Parameters:
screen_size ((float, float)) – physical size, in whatever units you prefer, of the presentation screen
resolution ((float, float)) – screen resolution, in pixels, in the same direction that screen size was measured in
distance (float) – physical distance between the observer and the screen, in the same unit as screen_size
- Returns:
ppd, the number of pixels in one degree of visual angle
- Return type: