Created
June 6, 2018 07:01
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配列生成方法
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| def setup(): | |
| np.random.seed(100) | |
| x = np.zeros(1000) | |
| u = np.random.rand(1000) | |
| flag = (u >= 0) & (u < 1/8) | |
| x[flag] = np.sqrt(8 * u[flag]) | |
| flag = (u >= 1/8) & (u < 1/4) | |
| x[flag] = 2 - np.sqrt(2 - 8 * u[flag]) | |
| flag = (u >= 1/4) & (u < 1/2) | |
| x[flag] = 1 + 4 * u[flag] | |
| flag = (u >= 1/2) & (u < 3/4) | |
| x[flag] = 3 + np.sqrt(4 * u[flag] - 2) | |
| flag = (u >= 3/4) & (u <= 1) | |
| x[flag] = 5 - np.sqrt(4 - 4 * u[flag]) | |
| return x |
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flag = (u >= 0) & (u < 1/8)で範囲指定x[flag] = np.sqrt(8 * u[flag])でその範囲内の数値のみ変更