prtools.circle

circle(shape, radius, shift=(0, 0), antialias=True, indexing='ij')

Draw a circle

Parameters:

• shape (array_like) – Size of output in pixels (nrows, ncols)

• radius (float) – Radius of circle in pixels

• shift ((2,) array_like, optional) – How far to shift center in float (rows, cols). Default is (0, 0).

• antialias (bool, optional) – If True (default), the shape edges are antialiased.

• indexing ({'ij', 'xy'}, optional) – Matrix (‘ij’, default) or cartesian (‘xy’) indexing of output.

Return type:

ndarray

Examples

>>> circ = prtools.circle(shape=(256, 256), radius=100)
>>> plt.imshow(circ, cmap='gray')

>>> circ = prtools.circle(shape=(256, 256), radius=25, shift=(-80, 50))
>>> plt.imshow(circ, cmap='gray')