TimeFromEpoch¶

class astropy.time.TimeFromEpoch(val1, val2, scale, precision, in_subfmt, out_subfmt, from_jd=False)[source]¶

Base class for times that represent the interval from a particular epoch as a floating point multiple of a unit time interval (e.g. seconds or days).

Attributes Summary

`cache`	Return the cache associated with this instance.
`epoch`	Reference epoch time from which the time interval is measured
`in_subfmt`
`jd1`
`jd2`
`jd2_filled`
`mask`
`masked`
`out_subfmt`
`precision`
`scale`	Time scale
`subfmts`
`value`	Return time representation from internal jd1 and jd2.

Methods Summary

`mask_if_needed`(value)
`set_jds`(val1, val2)	Initialize the internal jd1 and jd2 attributes given val1 and val2.
`to_value`([parent])	Return time representation from internal jd1 and jd2.

Attributes Documentation

subfmts = (('float', <class 'numpy.float64'>, None, <ufunc 'add'>), ('long', <class 'numpy.float128'>, <function longdouble_to_twoval>, <function twoval_to_longdouble>), ('decimal', <class 'numpy.object_'>, <numpy.vectorize object>, <numpy.vectorize object>), ('str', <class 'numpy.str_'>, <numpy.vectorize object>, <numpy.vectorize object>), ('bytes', <class 'numpy.bytes_'>, <numpy.vectorize object>, <numpy.vectorize object>))¶

Methods Documentation

set_jds(val1, val2)[source]¶: Initialize the internal jd1 and jd2 attributes given val1 and val2. For an TimeFromEpoch subclass like TimeUnix these will be floats giving the effective seconds since an epoch time (e.g. 1970-01-01 00:00:00).

to_value(parent=None, **kwargs)[source]¶: Return time representation from internal jd1 and jd2. Subclasses that require parent or to adjust the jds should override this method.