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Function
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- >statement
- [a:b]
- @
- @x:…
- ?i
- A()
- A. (x,…)
- [a1,…,an]
- abs()
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- filename ()
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- fillmthd()
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- for
- fork
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- func()
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- goto C
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- memory()
- merge()
- mergex()
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- minute()
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- modify()
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- next {a}
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- not ()
- now()
- ntile()
- null
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- numnorm()
- nvl()
- o()
- olap_close()
- olap_open ()
- olap_query ()
- ones()
- open()
- or()
- orc()
- oss_ bucket ()
- oss_ close ()
- oss_ copy ()
- oss_ file ()
- oss_ list ()
- oss_ open ()
- output()
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- pad()
- parallel()
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- pearson ()
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- pivot()
- pjoin()
- pls()
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- pmin()
- polyfit()
- pos()
- power()
- prior()
- proc()
- product()
- proportion()
- property()
- pseg()
- pselect()
- pseudo()
- psort()
- ptop()
- push()
- Qconnect()
- Qdirectory ()
- Qenv()
- Qfile()
- Qload()
- Qlock()
- Qmove()
- query()
- r(T,F)
- r.(x,…)
- r.F
- r.F=x
- r2dbc_close()
- r2dbc_exec()
- r2dbc_open()
- r2dbc_query()
- rand ()
- rands()
- range()
- rank()
- ranki()
- rankm ()
- ranks()
- read()
- record()
- redis_close ()
- redis_command()
- redis_open ()
- regex()
- register()
- remainder()
- rename()
- replace ()
- report_config()
- report_export()
- report_export()
- report_insert()
- report_open()
- report_open()
- report_replace()
- report_run()
- report_write()
- reportlite_config()
- reportlite_export()
- reportlite_export()
- reportlite_insert()
- reportlite_open()
- reportlite_open()
- reportlite_replace()
- reportlite_run()
- reportlite_write()
- reset()
- result
- return xi
- rgb()
- ridge()
- right()
- rmmiss ()
- rmmissdim ()
- rollback()
- round()
- row()
- rsa ()
- run()
- rvs()
- s3_ bucket ()
- s3_ close ()
- s3_ copy ()
- s3_ file ()
- s3_ list ()
- s3_ open ()
- sap_client()
- sap_close()
- sap_cursor()
- sap_execute()
- sap_getparam()
- sap_table()
- savepoint()
- sbs()
- scriptsave()
- se()
- second()
- segp()
- select()
- seq()
- sert()
- setenum()
- sf_close()
- sf_open ()
- sf_query ()
- sf_wsdlclose ()
- sf_wsdlopen ()
- sf_wsdlquery ()
- sf_wsdlview ()
- sg ()
- shift()
- sign()
- sin()
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- size()
- skew ()
- skip()
- sleep()
- smooth()
- sort()
- sortx()
- spark_hudi ()
- spark_ open()
- spark_close()
- spark_query()
- spark_read()
- spark_shell ()
- spearman ()
- splinemthd ()
- split()
- splserver ()
- sqlparse()
- sqltranslate ()
- substr ()
- stax_close()
- stax_open()
- stax_cursor()
- stax_query()
- sqrt()
- step()
- string()
- structure
- sum()
- svm()
- swap()
- switch()
- syncfile(hs,p)
- system()
- T()
- tarcorskew()
- tan()
- tanh()
- time()
- tinv()
- to()
- top()
- total()
- transpose()
- trim()
- true
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- urlencode()
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- xjoin()
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- xlscell()
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- xlsexport ()
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- xml()
- xor()
- xunion( )
- year()
- ym2_close ()
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- ym2_mcfload ()
- ym2_model ()
- ym2_pcfload ()
- ym2_pcfsave ()
- ym2_predict()
- ym2_result()
- zeros()
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- zip_add()
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- zip_compress()
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P.mi ()
描述：
建模时，创建缺失值指示变量。
语法：
备注：
MathCli外部库函数，外部库的使用请参考《外部库使用指南》。
建模时，根据变量cn，创建缺失值指示变量，缺失返回1，未缺失返回0。若缺失值比率小于等于5%或大于等于95%则不生成指示变量，返回null。
参数：
|
P |
排列/序表。 |
|
cn |
字符串/数字，序表或排列中准备预处理变量的列名（或列号，从1开始）。 |
返回值：
序表
|
|
A |
|
|
1 |
=T("D://house_prices_train.csv") |
|
|
2 |
=A1.mi(4) |
返回第4列缺失值指示变量。 |
|
3 |
=A1.mi("Alley") |
返回变量“Alley”的缺失值指示变量。 |
