Module galaxyutils

source code

Author: Nickolas Fotopoulos <nvf@gravity.phys.uwm.edu>

Classes

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CBCGC
class for working with the galaxy catalog created and maintained by the CBC group

GalaxyCatalog
left here to maintain compatibility with existing codes

GWGC
useful class for dealing with the gravitational wave galaxy catalog

CBCGGalaxy
A galaxy object that knows how to initialize itself from a line in a text file and consumes a minimum of memory.

GWGCgalaxy
A galaxy object that knows how to initialize itself from a line in a text file and consumes a minimum of memory.

Functions

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_make_within_pi(angles)
Make an array of angles completely between -pi and pi.

source code

is_inside_polygon(point, vertices)
Return True if the (2-D) point is inside the (2-D) polygon defined by the vertices.

source code

is_within_distances(gal_dist, dmin, dmax)
Return True if dmax > gal_dist > dmin

source code

hms2rad(ra_sex)
Convert right ascension and from a sexagesimal string to floating point radians.

source code

dms2rad(dec_sex)
Convert declination from a colon-delimited sexagesimal string to floating point radians.

source code

hm2rad(ra_sex)
Convert right ascension and from a sexagesimal string to floating point radians.

source code

dm2rad(dec_sex)
Convert declination from a colon-delimited sexagesimal string to floating point radians.

source code

amin2rad_or_tilde(amins)
convert arcminutes to radians

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deg2rad_or_tilde(degs)
convert degrees to radians

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h2rad(hours)
convert hours to radians

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float_or_tilde(num)
deal with the use of tildes (and other strings) for unknown float quantities in the GWGC catalog

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int_or_tilde(num)
deal with the use of tildes for unknown int quantities in the GWGC catalog

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Function Details

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is_inside_polygon(point, vertices)

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Return True if the (2-D) point is inside the (2-D) polygon defined by the vertices.

Warning: Result is undefined for points lying along the edge of the polygon.

Adapted from: http://local.wasp.uwa.edu.au/~pbourke/geometry/insidepoly/ (solution 2)

hms2rad(ra_sex)

source code

Convert right ascension and from a sexagesimal string to floating point radians. Handles h:m:s or h:m.

dms2rad(dec_sex)

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Convert declination from a colon-delimited sexagesimal string to floating point radians. Handles d:m:s.

hm2rad(ra_sex)

source code

Convert right ascension and from a sexagesimal string to floating point radians. Handles h:m.

dm2rad(dec_sex)

source code

Convert declination from a colon-delimited sexagesimal string to floating point radians. Handles d:m.