Source code for lfd

""" Linear Feature Detector (LFD) library is a collection of packages that
enable users to detect and analyze linear features on astronomical images. The
code was designed to be run interactively, or at scale on a cluster.

LFD is a more complete version of LFDS that contains all of the never-published
features of LFDS. Except for the linear feature detection code in the
detecttrails module, most of the LFDS code was recoded from scratch and made
compatible with Python 3 and OpenCv 3.0.

While most of the code is flexible enough to be appropriated for use with
various different data sources it's primarily intended to be used to analyize
SDSS images on a Sun Grid Engine (SGE) cluster for the purpose of detecting
meteor streaks. For more details on its application in this area of astronomy
refer to:

Bektesevic & Vinkovic, 2017, MNRAS, 1612.04748, Linear Feature Detection
Algorithm for Astronomical Surveys - I. Algorithm description

Some of the previoulsy unreleased features include GUI interfaces to the PBS
job creation module, a package for colation and analysis of results, a image
browser designed to speed up the verification of results, a package for
calculating and predicting the expected cross section of defocused trails and
other common case plotting and analysis tools are provided.


* Python 3+
* OpenCv 3+
* fitsio 0.9+
* numpy
* SqlAlchemy
* Astropy

Erin Sheldon's SDSS utilities come bundled with the provided code.

import os as _os

BOSS = None

from lfd import detecttrails
from lfd import createjobs
from lfd import gui
from lfd import results

[docs]def setup_detecttrails(bosspath=BOSS, photoobjpath=BOSS_PHOTOOBJ, photoreduxpath=PHOTO_REDUX, debugpath=None): """Sets up the environmental paths BOSS, BOSS_PHOTOOBJ, PHOTO_REDUX and DEBUG_PATH required for detecttrails package. Defining custom BOSS, BOSS_PHOTOOBJ and PHOTO_REDUX variables allows data not to follow the SDSS convention. Parameters ---------- bosspath : str The path to which BOSS environmental variable will be set to. This is the "boss" top directory. Default is set to ~/Desktop/boss photoobjpath : str The path to which BOSS_PHOTOOBJ env. var. will be set to. Default is $BOSS/photoObj. photoreduxpath : str The path to which PHOTO_REDUX env. var. will be set to. By default set to $BOSS/photo/redux- debugpath : str The path to which DEBUG_PATH env. var. will be set to. The current dir by default. Used to run detecttrails module in debug mode. """ if bosspath is None: bosspath = _os.path.join(_os.path.expanduser("~"), "Desktop/boss") else: bosspath = _os.path.expandser(bosspath) if photoobjpath is None: photoobjpath = _os.path.join(bosspath, "photoObj") else: photoobjpath = _os.path.expanduser(photoobjpath) if photoreduxpath is None: photoreduxpath = _os.path.join(bosspath, "photo/redux") else: photoreduxpath = _os.path.expanduser(photoreduxpath) if debugpath is None: # default to invocation directory debugpath = _os.path.abspath(_os.path.curdir) else: debugpath = _os.path.expanduser(debugpath) detecttrails.setup(bosspath, photoobjpath, photoreduxpath, debugpath)
[docs]def setup_createjobs(photoreduxpath=None): """Sets up the environmental path of PHOTO_REDUX only! Minimum environment required for certain createjobs package functionality. Parameters ---------- photoreduxpath : str The path to which PHOTO_REDUX env. var. will be set to. Defaults to '~/Desktop/boss/photoredux'. """ # see if BOSS was set previously and assume SDSS convention if (BOSS is not None) and (photoreduxpath is None): photoredux = _os.path.join(BOSS, "photo/redux") # otherwise assume both the SDSS convention and that BOSS is on ~/Desktop if (BOSS is None) and (photoreduxpath is None): bosspath = _os.path.join(_os.path.expanduser("~"), "Desktop/boss") photoredux = _os.path.join(bosspath, "photo/redux") # unless of course photoreduxpath was set manually createjobs.setup(photoreduxpath)
[docs]def setup_results(URI="sqlite:///", dbpath="~/Desktop", name="foo.db", echo=False): """Either connects to an existing DB (that has to be mappable by results package) or creates a new empty DB with the required tables. Parameters ---------- URI : str an URI to the DB. Defaults to 'sqlite:///$USER_HOME/food.db'. dbpath : str location of a directory with an existing DB, or a directory where a new DB will be created. Set to '~' by default. name : str name of the existing, or newly created, DB. Default: 'foo.db' echo : bool verbosity, Frue by default. """ dbpath = _os.path.expanduser(dbpath) db_uri = _os.path.join(URI+dbpath, name) results.connect2db(uri=db_uri, echo=echo)