dimage.fake.utils package

dimage.fake.utils.dfake(nx, ny, xcen=None, ycen=None, n=1.0, r50=3.0, ba=1.0, phi=0.0, simple=False)

Create fake Sersic galaxy image.

Parameters:

nx : int

size in X of output array

ny : int

size in Y of output array

xcen : float

X center (default to nx/2.)

ycen : float

Y center (default to ny/2.)

n : float

Sersic index (default 1.)

r50 : float

Sersic half-light radius (default 3.)

ba : float

Sersic minor-to-major axis ratio (default 1.)

phi : float

Sersic position angle (default 0.)

simple : bool

if True, just evaluate, don’t integrate at center (default False)

Returns:

image : np.float32

2-D ndarray (nx,ny) with fake image