Top panel: example 3D entropy (spottedness) landscape, obtained from 1000 DI models with different values of K, P_orb/P_rot, and φ. The simulated parameter values were K = 0.1 km s^-1  P_orb/P_rot = 1.7 and φ = 0.5. Middle and bottom panels: example 2D slices in two orthogonal planes, extracted from the 3D orbital parameter space. Each slice is obtained from a set of 2500 Doppler images. In all three panels, the colour scale shows the fractional spot coverage of the resulting Doppler maps, and the location of minimal spottedness shows the reconstructed set of orbital parameters.