Class Index

Class with utility-methods forr working with indices (vectors of integers)

There are some special features of indices: they should never be negative, and indice vectors are often monotonically increasing.

Inheritance
object
Index
Inherited Members
Namespace: TimeSeriesAnalysis
Assembly: TimeSeriesAnalysis.dll
Syntax
public class Index

Methods

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Add(int[], int)

elementwise addition of val2 to array1

Declaration
public static int[] Add(int[] array1, int val2)
Parameters
Type Name Description
int[] array1
int val2
Returns
Type Description
int[]
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AppendTrailingIndices(List<int>)

When filtering out bad data before identification of difference equations that depend both y[k] and y[k-1] it will some times be neccessary, to append the trailing indices

Declaration
public static List<int> AppendTrailingIndices(List<int> indiceArray)
Parameters
Type Name Description
List<int> indiceArray
Returns
Type Description
List<int>
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InverseIndices(int, List<int>)

given a list of sorted indeces and a desired vector size N, returns the indices that are not in "sortedIndices" i.e. of the "other vectors

Declaration
public static List<int> InverseIndices(int N, List<int> sortedIndices)
Parameters
Type Name Description
int N
List<int> sortedIndices
Returns
Type Description
List<int>
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MakeIndexArray(int, int)

creates a monotonically increasing integer (11.12.13...) array starting at startValue and ending at endValue

Declaration
public static int[] MakeIndexArray(int startValue, int endValue)
Parameters
Type Name Description
int startValue
int endValue
Returns
Type Description
int[]
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Max(int[], int)

Returns element-wise maximum of array element and value

Declaration
public static int[] Max(int[] array, int value)
Parameters
Type Name Description
int[] array
int value
Returns
Type Description
int[]
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Remove(int[], List<int>)

Removes ceratin indices from the array

Declaration
public static int[] Remove(int[] array, List<int> indicesToRemove)
Parameters
Type Name Description
int[] array
List<int> indicesToRemove
Returns
Type Description
int[]
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Subtract(int[], int)

subtracts val2 from array2 elements

Declaration
public static int[] Subtract(int[] array1, int val2)
Parameters
Type Name Description
int[] array1
int val2
Returns
Type Description
int[]
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Union(List<int>, List<int>)

returns the union of array1 and array2, a list of elements that are in either vector

Declaration
public static List<int> Union(List<int> vec1, List<int> vec2)
Parameters
Type Name Description
List<int> vec1
List<int> vec2
Returns
Type Description
List<int>