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Functions
- #arg
- #@
- #c
- $(d)dql...
- $(db)sql;…
- ${macroExp}
- =expression
- >statement
- [a:b]
- @
- @x:…
- ~( i )
- A()
- A.( x,... )
- [a1,...an]
- abs()
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- age()
- align()
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- E()
- E()
- elapse()
- elasticnet()
- end s
- enum()
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- es_close()
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- exec()
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- exists()
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- fetch()
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- file()
- filename()
- fill()
- fillcons()
- fillfun()
- fillmthd()
- find()
- Fintrate()
- finv()
- Firr()
- fisher_p()
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- for
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- func()
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- get()
- gcd()
- gcs_bucket()
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- goto C
- group()
- groupc()
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- groups()
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- n.f(x)
- name()
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- next{a}
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- norm()
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- null
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- o()
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- ones()
- open()
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- p()
- pad()
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- pchipmthd()
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- periods()
- permut()
- pfind()
- pi()
- pivot()
- pjoin()
- pls()
- pmax()
- pmin()
- polyfit()
- pos()
- power()
- prior()
- proc()
- product()
- proportion()
- property()
- pseg()
- pselect()
- pseudo()
- psort()
- ptop()
- push()
- Qconnect()
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- Qmove()
- query()
- r.(x,...)
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- rank()
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- reset()
- result
- return xi
- rgb()
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- rvs()
- s3_bucket()
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- s3_file()
- s3_list()
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- sap_client()
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- sap_cursor()
- sap_execute()
- sap_getparam()
- sap_table()
- savepoint()
- sbs()
- se()
- second()
- segp()
- select()
- seq()
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- sf_close()
- sf_open()
- sf_query()
- sf_wsdlclose()
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- sg()
- shift()
- sign()
- sin()
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- size()
- skew()
- skip()
- sleep()
- smooth()
- sort()
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- spark_open()
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- spark_read()
- spearman()
- splinemthd()
- split()
- splserver()
- sqlparse()
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- substr()
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- stax_cursor()
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- sqrt()
- step()
- string()
- structure
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- svm()
- swap()
- switch()
- syncfile(hs,p)
- system()
- T()
- tarcorskew()
- tan()
- tanh()
- time()
- tinv()
- to()
- top()
- total()
- transpose()
- trim()
- true
- try
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- union()
- update()
- upper()
- urlencode()
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- v()
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- var(V)
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- was_bucket()
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- write()
- ws_call()
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- xml()
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- year()
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- zeros()
- zip()
- zip_add()
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- Intersection of sequences
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- Chart Elements
polyfit()
Description:
Calculate the coefficient between two vectors in polynomial fitting.
Syntax:
polyfit(X,Y,n)
Note:
The function calculates the coefficient between vector X and vector Y, which are of same dimension, in a polynomial fitting with the degree of polynomial as n, and returns a sequence of n+1 coefficients ordered from low order to high order.
Parameter:
|
X/Y |
Vectors of same dimension |
|
n |
A non-zero positive integer |
Return value:
Sequence
Example:
|
|
A |
|
|
1 |
[3,5,2,8] |
|
|
2 |
[4,6,2,4] |
|
|
3 |
=polyfit(A1,A2,2) |
Or can be represented as -0.333333x2+3.666667x-4. |
