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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Shift(int[], int)

Shifts the indice array by an integer, (positive or negative value) Note that the return index array by will not have negative indices, so returned array may be smaller in dimension that input

Declaration
public static int[] Shift(int[] inArray, int shiftByIndex)
Parameters
Type Name Description
int[] inArray
int shiftByIndex
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>