skdim.datasets.swissRoll3Sph

skdim.datasets.swissRoll3Sph(n_swiss, n_sphere, a=1, b=2, nturn=1.5, h=4, random_state=None)

Generates a sample from a uniform distribution on a Swiss roll-surface, possibly together with a sample from a uniform distribution on a 3-sphere inside the Swiss roll. Translated from Kerstin Johnsson’s R package intrinsicDimension

Parameters:

n_swiss : int

Number of data points on the Swiss roll.

n_sphere : int

Number of data points on the 3-sphere.

a : int or float, default=1

Minimal radius of Swiss roll and radius of 3-sphere.

b : int or float, default=2

Maximal radius of Swiss roll.

nturn : int or float, default=1.5

Number of turns of the surface.

h : int or float, default=4

Height of Swiss roll.

Returns:

data (np.array, (npoints x ndim)) – Generated data