1.4.1.0 quanta.quantity

quanta.quantity - Function

1.4.1 make a quantity from a string or from a numeric value and a unit string
Description

quantity makes a quantity from a string, or from a value and a string. Note that a function unit exists which is a synonym for quantity. If only a string is given, it can be a scalar string. The result will be a scalar quantity.

If a numeric value and a unit string are given, the numeric value can be any numeric type, and can also be a vector of numeric values.

Arguments


Inputs
v	quantity or numeric or string to convert to quantity
	allowed:	variant
	Default:
unitname	unit string if v numeric
	allowed:	string
	Default:

Returns
record

Example

"""
#
print "\t----\t quantity Ex 1 \t----"
tu = qa.quantity(’1Jy’) # make quantity
print tu
#{’value’: 1.0, ’unit’: ’Jy’}
print qa.quantity(tu) # also accepts a quantity
#{’value’: 1.0, ’unit’: ’Jy’}
tu = qa.unit(’1Jy’) # make quantity with synonym
print tu
#{’value’: 1.0, ’unit’: ’Jy’}
print qa.quantity(-1.3, ’Jy’) # make quantity with separate value
#{’value’: -1.3, ’unit’: ’Jy’}
q1 = qa.quantity([8.57132661e+09, 1.71426532e+10], ’km/s’)
print q1
#{’value’: array([ 8.57132661e+09, 1.71426532e+10]), ’unit’: ’km/s’}
#
"""

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