61 lines
2 KiB
Python
61 lines
2 KiB
Python
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##
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# This software was developed and / or modified by Raytheon Company,
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# pursuant to Contract DG133W-05-CQ-1067 with the US Government.
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#
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# U.S. EXPORT CONTROLLED TECHNICAL DATA
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# This software product contains export-restricted data whose
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# export/transfer/disclosure is restricted by U.S. law. Dissemination
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# to non-U.S. persons whether in the United States or abroad requires
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# an export license or other authorization.
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#
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# Contractor Name: Raytheon Company
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# Contractor Address: 6825 Pine Street, Suite 340
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# Mail Stop B8
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# Omaha, NE 68106
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# 402.291.0100
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#
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# See the AWIPS II Master Rights File ("Master Rights File.pdf") for
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# further licensing information.
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##
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from Add import execute as Add
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from numpy import multiply, copy
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def execute(*args):
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""" Perform scalar or vector subtraction.
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"""
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diffArgs = list(args)
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if type(diffArgs[0]) == tuple:
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for i in range(1, len(diffArgs)):
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diffVectorArg = list(diffArgs[i])
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diffVectorArg[2] = -diffVectorArg[2]
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diffVectorArg[3] = -diffVectorArg[3]
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diffArgs[i] = tuple(diffVectorArg)
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return apply(Add, diffArgs)
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else:
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result = 0
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result += diffArgs[0]
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for i in range(1, len(diffArgs)):
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result -= diffArgs[i]
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return result
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def test():
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from numpy import array
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if not(all(execute(array([1., 2.]), array([3., 4.])) == array([ - 2, - 2]))):
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raise Exception
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from Vector import execute as Vector
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# using meteoroligcal directions
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Vector1 = Vector(array([1., 2.]), array([0., 270.]), True)
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Vector2 = Vector(array([3., 4.]), array([180., 90.]), True)
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(mag, dir, u, v) = execute(Vector1, Vector2)
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if not(all(mag == array([2., 2.])) and all(dir.round(0) == array([180., 90.]))):
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print mag
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print dir
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raise Exception
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print "Difference Test Complete"
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