xlens.simulator.perturbation.utils

Internal helpers shared by perturbation models.

Functions

_ternary(→ str)	Convert integer n to zero-padded base-3 string with n_digits
_get_shear_res_dict(lensed_x, lensed_y, gamma1, ...)	Build the standard result dict returned by distort_galaxy methods.

Module Contents

_ternary(n: int, n_digits: int) → str

Convert integer n to zero-padded base-3 string with n_digits length.

_get_shear_res_dict(lensed_x, lensed_y, gamma1, gamma2, kappa, has_finite_shear)

Build the standard result dict returned by distort_galaxy methods.

Parameters:

• lensed_x (float) – Post-lensing arcsecond positions on the tangent plane.

• lensed_y (float) – Post-lensing arcsecond positions on the tangent plane.

• gamma1 (float) – Shear components at the galaxy position.

• gamma2 (float) – Shear components at the galaxy position.

• kappa (float) – Convergence at the galaxy position.

• has_finite_shear (bool) – Whether the shear is physically valid (e.g. |g| < 1).