smile.data.measure

Interface Measure

All Superinterfaces:

java.io.Serializable

All Known Implementing Classes:

CategoricalMeasure, IntervalScale, NominalScale, NumericalMeasure, OrdinalScale, RatioScale

public interface Measure
extends java.io.Serializable

Level of measurement or scale of measure is a classification that describes the nature of information within the values assigned to variables. Psychologist Stanley Smith Stevens developed the best-known classification with four levels, or scales, of measurement: nominal, ordinal, interval, and ratio. Each scale of measurement has certain properties which in turn determines the appropriateness for use of certain statistical analyses.

Field Summary

Fields

Modifier and Type	Field and Description
static RatioScale	Currency Currency.
static RatioScale	Percent Percent.

Method Summary

Modifier and Type	Method and Description
java.lang.String	toString(java.lang.Object o) Returns the string representation of a value of the measure.
java.lang.Number	valueOf(java.lang.String s) Returns a measurement value object represented by the argument string s.

Field Detail

Currency

static final RatioScale Currency

Currency.

Percent

static final RatioScale Percent

Percent.

Method Detail

valueOf

java.lang.Number valueOf(java.lang.String s)
                  throws java.lang.NumberFormatException

Returns a measurement value object represented by the argument string s.

Throws:

java.lang.NumberFormatException

toString

java.lang.String toString(java.lang.Object o)

Returns the string representation of a value of the measure.