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Class weka.core.Range
java.lang.Object
|
+----weka.core.Range
- public class Range
- extends Object
- implements Serializable
Class representing a range of cardinal numbers. The range is set by a
string representation such as:
all
first-last
1,2,3,4
or combinations thereof. The range is internally converted from
1-based to 0-based (so methods that set or get numbers not in string
format should use 0-based numbers).
- Author:
- Len Trigg (trigg@cs.waikato.ac.nz)
-
Range()
- Default constructor.
-
Range(String)
- Constructor to set initial range.
-
getInvert()
- Gets whether the range sense is inverted, i.e.
-
getRanges()
- Gets the string representing the selected range of values
-
getSelection()
- Gets an array containing all the selected values, in the order
that they were selected (or ascending order if range inversion is on)
-
indicesToRangeList(int[])
- Creates a string representation of the indices in the supplied array.
-
isInRange(int)
- Gets whether the supplied cardinal number is included in the current
range.
-
main(String[])
- Main method for testing this class.
-
setInvert(boolean)
- Sets whether the range sense is inverted, i.e.
-
setRanges(String)
- Sets the ranges from a string representation.
-
setUpper(int)
- Sets the value of "last".
-
toString()
- Constructs a representation of the current range.
Range
public Range()
- Default constructor.
Range
public Range(String rangeList)
- Constructor to set initial range.
- Parameters:
- rangeList - the initial range
- Throws: IllegalArgumentException
- if the range list is invalid
setUpper
public void setUpper(int newUpper)
- Sets the value of "last".
- Parameters:
- newUpper - the value of "last"
getInvert
public boolean getInvert()
- Gets whether the range sense is inverted, i.e. all except
the values included by the range string are selected.
- Returns:
- whether the matching sense is inverted
setInvert
public void setInvert(boolean newSetting)
- Sets whether the range sense is inverted, i.e. all except
the values included by the range string are selected.
- Parameters:
- newSetting - true if the matching sense is inverted
getRanges
public String getRanges()
- Gets the string representing the selected range of values
- Returns:
- the range selection string
setRanges
public void setRanges(String rangeList)
- Sets the ranges from a string representation.
- Parameters:
- rangeList - the comma separated list of ranges. The empty
string sets the range to empty.
- Throws: IllegalArgumentException
- if the rangeList was not well formed
isInRange
public boolean isInRange(int index)
- Gets whether the supplied cardinal number is included in the current
range.
- Parameters:
- index - the number of interest
- Returns:
- true if index is in the current range
- Throws: RuntimeException
- if the upper limit of the range hasn't been defined
toString
public String toString()
- Constructs a representation of the current range. Being a string
representation, the numbers are based from 1.
- Returns:
- the string representation of the current range
- Overrides:
- toString in class Object
getSelection
public int[] getSelection()
- Gets an array containing all the selected values, in the order
that they were selected (or ascending order if range inversion is on)
- Returns:
- the array of selected values
- Throws: RuntimeException
- if the upper limit of the range hasn't been defined
indicesToRangeList
public static String indicesToRangeList(int indices[])
- Creates a string representation of the indices in the supplied array.
- Parameters:
- indices - an array containing indices to select.
Since the array will typically come from a program, indices are assumed
from 0, and thus will have 1 added in the String representation.
main
public static void main(String argv[])
- Main method for testing this class.
- Parameters:
- argv - one parameter: a test range specification
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