mangadap.util.misc module¶

A catch-all module with miscellaneous utility functions.

License:

Copyright (c) 2015, SDSS-IV/MaNGA Pipeline Group: Licensed under BSD 3-clause license - see LICENSE.rst

Source location:

$MANGADAP_DIR/python/mangadap/util/misc.py

Imports and python version compliance:

from __future__ import division
from __future__ import print_function
from __future__ import absolute_import
from __future__ import unicode_literals

import sys
if sys.version > '3':
    long = int

import numpy

Revision history:

Original implementation by K. Westfall (KBW)
May 2015: (KBW) Documentation and Sphinx tests
Jun 2015: (KBW) Added where_not
Jul 2016: (KBW) Change asarray to atleast_1d
Nov 2016: (KBW) Added high_pass_filter()
Jan 2017: (KBW) Created mangadap.util.filter and
removed the filtering and smoothing functions from this file.
Jul 2017: (KBW) Removed where_not function.

mangadap.util.misc.line_coeff(p1, p2)[source]¶

Given two points on a line return the slope and intercept calculated as

\[\begin{split}m &= \frac{y_1 - y_2}{x_1 - x_2} \\ b &= y_2 - m\ x_2\end{split}\]

Parameters:	p1 (array-like) – A two-element $(x_1,y_1)$ array with one of the two points on the line. p2 (array-like) – A two-element $(x_2,y_2)$ array with one of the two points on the line.
Returns:	The slope ($m$) and intercept ($b$) of the line, respectively.
Return type:	float

Warning

Performs no checks of the input.