LSST Applications 27.0.0,g0265f82a02+469cd937ee,g02d81e74bb+21ad69e7e1,g1470d8bcf6+cbe83ee85a,g2079a07aa2+e67c6346a6,g212a7c68fe+04a9158687,g2305ad1205+94392ce272,g295015adf3+81dd352a9d,g2bbee38e9b+469cd937ee,g337abbeb29+469cd937ee,g3939d97d7f+72a9f7b576,g487adcacf7+71499e7cba,g50ff169b8f+5929b3527e,g52b1c1532d+a6fc98d2e7,g591dd9f2cf+df404f777f,g5a732f18d5+be83d3ecdb,g64a986408d+21ad69e7e1,g858d7b2824+21ad69e7e1,g8a8a8dda67+a6fc98d2e7,g99cad8db69+f62e5b0af5,g9ddcbc5298+d4bad12328,ga1e77700b3+9c366c4306,ga8c6da7877+71e4819109,gb0e22166c9+25ba2f69a1,gb6a65358fc+469cd937ee,gbb8dafda3b+69d3c0e320,gc07e1c2157+a98bf949bb,gc120e1dc64+615ec43309,gc28159a63d+469cd937ee,gcf0d15dbbd+72a9f7b576,gdaeeff99f8+a38ce5ea23,ge6526c86ff+3a7c1ac5f1,ge79ae78c31+469cd937ee,gee10cc3b42+a6fc98d2e7,gf1cff7945b+21ad69e7e1,gfbcc870c63+9a11dc8c8f
LSST Data Management Base Package
|
Functions | |
toIndex (nside, ra, dec) | |
toRaDec (nside, index) | |
eq2xyz (ra, dec) | |
eq2xyzVec (ra, dec) | |
convert_spherical (ra, dec) | |
convert_spherical_array (array) | |
query_disc (nside, ra, dec, max_rad, min_rad=0) | |
Utilities for interfacing with hpgeom. Originally implemented in http://github.com/LSSTDESC/dia_pipe and then translated to hpgeom.
lsst.pipe.tasks.associationUtils.convert_spherical | ( | ra, | |
dec ) |
Convert from ra,dec to spherical coordinates. Used in query_disc. Parameters ---------- ra : `float` RA in radians. dec : `float` Declination in radians
Definition at line 124 of file associationUtils.py.
lsst.pipe.tasks.associationUtils.convert_spherical_array | ( | array | ) |
Convert from and a array ra,dec to spherical coordinates. Used in query_disc Parameters ---------- array : `numpy.ndarray`, (N, 2) (N, 2) Array of RA, DEC values. Returns ------- vecs : `numpy.ndarray`, (N, 3) Vectors on the unit sphere
Definition at line 141 of file associationUtils.py.
lsst.pipe.tasks.associationUtils.eq2xyz | ( | ra, | |
dec ) |
Convert from equatorial ra,dec in degrees to x,y,z on unit sphere. Parameters ---------- ra : `float` RA in degrees. dec : `float` Declination in degrees Returns ------- xyz : `numpy.ndarray`, (3,) Float xyz positions on the unit sphere.
Definition at line 72 of file associationUtils.py.
lsst.pipe.tasks.associationUtils.eq2xyzVec | ( | ra, | |
dec ) |
Convert equatorial ra,dec in degrees to x,y,z on the unit sphere parameters Vectorized version of ``eq2xyz`` Parameters ---------- ra : array_like, (N,) Array of RA in degrees. dec : array_like, (N,) Declination in degrees Returns ------- vec : `numpy.ndarray`, (N,3) Array of unitsphere 3-vectors.
Definition at line 96 of file associationUtils.py.
lsst.pipe.tasks.associationUtils.query_disc | ( | nside, | |
ra, | |||
dec, | |||
max_rad, | |||
min_rad = 0 ) |
Get the list of healpix indices within max_rad, min_rad given in radians around ra,dec given in degrees Parameters ---------- nside : `int` Resolution of the healpixels to search/return. ra : `float` RA in degrees. dec : `float` Declination in degrees max_rad : `float` Max distance in radians to search nearby healpixels. min_rad : `float`, optional Minimum distance in radians to search healpixels. Default = 0.
Definition at line 161 of file associationUtils.py.
lsst.pipe.tasks.associationUtils.toIndex | ( | nside, | |
ra, | |||
dec ) |
Return healpix index given ra, dec in degrees Parameters ---------- nside : `int` Power of 2 nside healpix resolution. ra : `float` RA in degrees. dec : `float` Declination in degrees Returns ------- index : `int` Unique healpix pixel ID containing point RA, DEC at resolution nside.
Definition at line 33 of file associationUtils.py.
lsst.pipe.tasks.associationUtils.toRaDec | ( | nside, | |
index ) |
Convert from healpix index to ra,dec in degrees Parameters ---------- nside : `int` Resolution of healpixel "grid". index : `int` Index of the healpix pixel we want to find the location of. Returns ------- pos : `numpy.ndarray`, (2,) RA and DEC of healpix pixel location in degrees.
Definition at line 53 of file associationUtils.py.