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Function
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- query()
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- redis_close ()
- redis_command()
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- regex()
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- result
- return xi
- rgb()
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- sap_client()
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- shift()
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- size()
- skew ()
- skip()
- sleep()
- smooth()
- sort()
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- spearman ()
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- split()
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- sqlparse()
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- sqrt()
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- T()
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- to()
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- transpose()
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- true
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- typeof(x)
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- urlencode()
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- was_ bucket ()
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- web_crawl()
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dis()
描述：
计算两向量之间的欧式距离。
语法：
dis(A,B)
备注：
计算n维空间中，两向量之间的实际距离，即计算向量A与向量B之间的欧氏距离。
B缺省全为0，计算向量A与原点之间的欧氏距离。
参数：
|
A/B |
向量。 |
选项：
|
@a |
计算向量A与向量B之间，各位数字相减的绝对值之和。 |
|
@m |
欧氏距离在开方前求平均。 |
返回值：
数值
示例：
|
|
A |
|
|
1 |
[2,0,-8] |
|
|
2 |
[0,-9,-2] |
|
|
3 |
=dis(A1,A2) |
11.0 |
|
4 |
=dis@a(A1,A2) |
17.0 |
|
5 |
=dis@m([0,1],[1,2]) |
1.0 |
|
6 |
=dis(A1) |
8.246211251235321 |