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Function
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- pseudo()
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- push()
- Qconnect()
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- Qenv()
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- query()
- r(T,F)
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- r.F=x
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- rand ()
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- ranki()
- rankm ()
- ranks()
- read()
- record()
- redis_close ()
- redis_command()
- redis_open ()
- regex()
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- report_config()
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- reset()
- result
- return xi
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- sap_client()
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- sbs()
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- segp()
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- sf_open ()
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- sf_wsdlclose ()
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- shift()
- sign()
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- size()
- skew ()
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- sort()
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- spearman ()
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- split()
- splserver ()
- sqlparse()
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- substr ()
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- sqrt()
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- svm()
- swap()
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- T()
- tarcorskew()
- tan()
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- time()
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- 交列
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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 |