source:
trunk/anuga_work/development/2010-projects/anuga_1d/base/util.py
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| Last change on this file since 8153 was 7884, checked in by , 15 years ago | |
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| File size: 264 bytes | |
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| 1 | """ |
| 2 | This module contains various auxiliary function used by pyvolution. |
| 3 | """ |
| 4 | |
| 5 | |
| 6 | import numpy |
| 7 | |
| 8 | def mean(x): |
| 9 | return numpy.sum(x)/len(x) |
| 10 | |
| 11 | |
| 12 | def gradient(x0, x1, q0, q1): |
| 13 | |
| 14 | if q1-q0 != 0: |
| 15 | a = (q1-q0)/(x1-x0) |
| 16 | else: |
| 17 | a = 0 |
| 18 | |
| 19 | return a |
| 20 | |
| 21 |
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