sep.ellipse_coeffs¶
- sep.ellipse_coeffs(a, b, theta)¶
Convert from ellipse axes and angle to coefficient representation.
- Parameters
- a, b, thetaarray_like
Ellipse(s) semi-major, semi-minor axes and position angle respectively. Position angle is radians counter clockwise from positive x axis to major axis, and lies in range
[-pi/2, pi/2]
- Returns
- cxx, cyy, cxy
ndarray
Describes the ellipse(s)
cxx * x^2 + cyy * y^2 + cxy * xy = 1
- cxx, cyy, cxy