source:
development/pyvolution-1d/util.py
@
3322
| Last change on this file since 3322 was 2716, checked in by , 19 years ago | |
|---|---|
| File size: 270 bytes | |
| Rev | Line | |
|---|---|---|
| [2716] | 1 | """ |
| 2 | This module contains various auxiliary function used by pyvolution. | |
| 3 | """ | |
| 4 | ||
| 5 | def mean(x): | |
| 6 | from Numeric import sum | |
| 7 | return sum(x)/len(x) | |
| 8 | ||
| 9 | ||
| 10 | def gradient(x0, x1, q0, q1): | |
| 11 | ||
| 12 | if q1-q0 != 0: | |
| 13 | a = (q1-q0)/(x1-x0) | |
| 14 | else: | |
| 15 | a = 0 | |
| 16 | ||
| 17 | return a | |
| 18 |
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