1.3.1.0 measures.riseset

measures.riseset - Function

1.3.1 get rise and set times
Description

rise will give the rise/set times of a source. It needs the position in the frame, and a time. If the latter is not set, the current time will be used. The returned value is a record with a ’solved’ field, which is F if the source is always below or above the horizon. In that case the rise and set fields will all have a string value. The record also returns a rise and set record, with ’last’ and ’utc’ fields showing the rise and set times as epochs.

Arguments


Inputs
crd	direction of source (direction measure)
	allowed:	any
	Default:	variant
ev	elevation limit
	allowed:	any
	Default:	variant 0.0deg

Returns
anyrecord

Example

# NOT IMPLEMENTED
print "\t----\t riseset Ex 1 \t----"
print me.riseset(me.direction(’sun’))
#[solved=T,
# rise=[last=[type=epoch, refer=LAST, m0=[value=0.0731388605, unit=d]],
# utc=[type=epoch, refer=UTC, m0=[value=52085.8964, unit=d]]],
# set=[last=[type=epoch, refer=LAST, m0=[value=0.455732593, unit=d]],
# utc=[type=epoch, refer=UTC, m0=[value=52086.2779, unit=d]]]]
print me.riseset(me.direction(’sun’), qa.unit(’80deg’))
#[solved=F,
# rise=[last=below, utc=below],
# set=[last=below, utc=below]]
print qa.form.long(me.riseset(me.direction(’sun’)).rise.utc.m0)
#21:30:47.439
#

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