1.3.1.0 measures.posangle

measures.posangle - Function

1.3.1 get position angle of two directions
Description

posangle will give the position angle from a direction to another. I.e. the angle in a direction between the direction to the North pole and the other direction.

Arguments


Inputs
m1	direction of source (direction measure)
	allowed:	any
	Default:	record
m2	direction of other source (direction measure)
	allowed:	any
	Default:	record

Returns
anyrecord

Example

"""
#
print "\t----\t posangle Ex 1 \t----"
a=me.direction(’j2000’,’0deg’,’70deg’)
b=me.direction(’j2000’,’0deg’,’80deg’)
print me.posangle(a,b)
#{’value’: -0.0, ’unit’: ’deg’}
print me.separation(a,b)
#{’value’: 9.9999999999999893, ’unit’: ’deg’}
tim=me.epoch(’utc’,’today’)
print me.doframe(tim)
#True
pos=me.observatory(’ATCA’)
print me.doframe(pos)
#True
print me.posangle(a,b)
#{’value’: -0.0, ’unit’: ’deg’}
#
"""

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