50 lines
1.1 KiB
Python
50 lines
1.1 KiB
Python
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#!/usr/bin/python
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import math
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from baker import run_baker
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from grid.DD import grid
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from grid.simplex import contains
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def exact_func(X):
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x = X[0]
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y = X[0]
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return 1 - math.sin((x-0.5)**2 + (y-0.5)**2)
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if __name__ == '__main__':
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points = [
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[ 0.25, 0.40], # 0
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[ 0.60, 0.80], # 1
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[ 0.65, 0.28], # 2
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[ 0.28, 0.65], # 3
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[ 1.00, 0.75], # 4
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[ 0.30, 0.95], # 5
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[ 0.80, 0.50], # 6
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[ 0.35, 0.15], # 7
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]
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q = [exact_func(p) for p in points]
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X = [0.55, 0.45]
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g = grid(points, q)
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g.construct_connectivity()
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R = g.create_mesh(range(3))
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print contains(X, R.points)
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extra = 3
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S = g.create_mesh(range(3, 3 + extra))
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answer = run_baker(X, R, S, 3)
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answer['exact'] = exact_func(X)
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t = ('qlin', 'error', 'exact')
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for i in t:
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print "%s %s" % (
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i.ljust(10),
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("%0.4f" % answer[i]),
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)
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lin_err = abs(answer['exact'] - answer['qlin'])
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final_err = abs(answer['exact'] - answer['final'])
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print lin_err >= final_err
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