pq-array.rst

PhysicalQuantitiesArray

from PhysicalQuantities import q, QA
import numpy as np

a = QA(np.random.rand(10), 'm')
b = QA(np.random.rand(10), 's')

a

PhysicalQuantityArray([0.38290499 0.0446361 0.69727907 0.73542758 0.32310051 0.08882622

0.54634225 0.1663809 0.44703685 0.58633038], unit=m)

a+a

PhysicalQuantityArray([0.76580998 0.08927219 1.39455814 1.47085516 0.64620102 0.17765243

1.09268451 0.3327618 0.8940737 1.17266076], unit=m)

a+b

:

---------------------------------------------------------------------------

UnitError                                 Traceback (most recent call last)

<ipython-input-5-ca730b97bf8a> in <module>()
----> 1 a+b


~/git/PhysicalQuantities/PhysicalQuantities/quantityarray.py in __array_ufunc__(self, ufunc, method, *inputs, **kwargs)
     37             par1, par2 = inputs
     38             if isinstance(par2, PhysicalQuantityArray):
---> 39                 if par2.unit != self.unit:
     40                     raise ValueError('Incompatible units.')
     41                 args.append(par2.view(np.ndarray))


~/git/PhysicalQuantities/PhysicalQuantities/unit.py in __eq__(self, other)
    430         if isphysicalunit(other) and self.powers == other.powers:
    431             return self.factor == other.factor
--> 432         raise UnitError('Cannot compare different dimensions %s and %s' % (self, other))
    433 
    434     def __mul__(self, other):


UnitError: Cannot compare different dimensions s and m

a/b

PhysicalQuantityArray([ 0.41969088 0.05174994 1.31479216 0.74886358 5.32995917 0.12869864

12.99434469 0.7032714 0.53587343 1.39371093], unit=m/s)

a*b

PhysicalQuantityArray([0.34934338 0.03850016 0.36979084 0.72223264 0.01958625 0.06130676

0.02297075 0.03936262 0.37292751 0.24666759], unit=m*s)

a.mm

PhysicalQuantityArray([382.90499068 44.63609551 697.27906957 735.42757919 323.10050788

88.82621671 546.34225407 166.38090045 447.03685138 586.33038064], unit=mm)

a.km_

array([3.82904991e-04, 4.46360955e-05, 6.97279070e-04, 7.35427579e-04,

3.23100508e-04, 8.88262167e-05, 5.46342254e-04, 1.66380900e-04, 4.47036851e-04, 5.86330381e-04])