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Statistics

  

SelectNonNumeric

  

select non-numeric values

  

RemoveNonNumeric

  

remove non-numeric values

 

Calling Sequence

Parameters

Description

Options

Examples

Calling Sequence

SelectNonNumeric(X, options)

RemoveNonNumeric(X, options)

Parameters

X

-

data sample

options

-

(optional) equation of the form exclude=value

Description

• 

The SelectNonNumeric function selects non-numeric items from X and returns them in a new data sample. Note, that an expression X is considered non-numeric if evalfX does not return a floating-point number. Numeric items are discarded in the newly created data sample.

• 

The first parameter X is a data sample - given as e.g. a Vector.

• 

The RemoveNonNumeric function does the opposite of SelectNonNumeric. It removes the non-numeric values from X.

Options

  

The options argument can contain one or more of the options shown below.

• 

exclude=infinity, undefined, or [infinity, undefined] -- By default, undefined and infinity are considered non-numeric. This can be changed by adding infinity or undefined or both to the exclude list. Thus, exclude=undefined means that infinity should still be considered numeric but undefined should not.

Examples

withStatistics:

AArray3,3,1,a,b,a,π,sin1,undefined,∞

A:=331abaπsin1undefined∞

(1)

RemoveNonNumericA

331πsin1

(2)

SelectNonNumericA,exclude=undefined

aba∞

(3)

RemoveNonNumericA,exclude=undefined

331πsin1undefined

(4)

SelectNonNumericA

abaundefined∞

(5)

BArray1,2,3,4,undefined,∞,datatype=float[8]

B:=1.2.3.4.HFloatundefinedHFloat∞

(6)

RemoveNonNumericB

1.2.3.4.

(7)

RemoveNonNumericB,exclude=∞

1.2.3.4.HFloat∞

(8)

See Also

Statistics

Statistics[Computation]

Statistics[Remove]

Statistics[RemoveInRange]

Statistics[Select]

Statistics[SelectInRange]

 


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