 | DFColumn Class |
Abstract base class for data frame column types.
Inheritance HierarchyNamespace: CenterSpace.NMath.Core
Assembly: NMath (in NMath.dll) Version: 7.4
SyntaxThe DFColumn type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | DFColumn | Default constructor. |
| DFColumn(String) | Constructs a DFColumn instance with the given name. |
Properties| Name | Description | |
|---|---|---|
 | ColumnType | Gets the type of the objects held by this column. |
| Count | Gets the number of ojects in this column. |
| IsNumeric | Returns true if the objects in this column are integers or floating point numbers; otherwise, false. |
| IsSynchronized | Returns false. Access to this class is not synchronized. |
| Item | Gets the object in this column at the given position. |
| Label | Gets and sets the label in the header of this column. |
| MissingValue | Gets and sets the value used to represent missing values in this column. |
| Name | Gets the name of this column. |
| SyncRoot | Gets an object that can be used to synchronize access to this ICollection. |
Methods| Name | Description | |
|---|---|---|
 | Add | Adds an object to this column. |
| Clean | Returns a copy of this column without missing values. |
| Clone | Returns a deep copy of this column. |
| Convert | Converts an object to the type held by this column. |
| CopyTo(Array) | Copies the contents of this column into the given array, beginning at the first position within the array. |
| CopyTo(Array, Int32) | Copies the contents of this column into the given array, beginning at the given position within the array. |
| GetEnumerator | Returns an enumerator for this column. |
| GetFactor | Creates a factor from this column. |
| GetFactor(Object) | Creates a factor from this column. |
| Insert | Inserts an object into this column and the given position. |
| IsMissing | Returns true if the element at the given position is missing; otherwise, false. |
 | Parse(DataColumn) | Parses the DataColumn into a DFColumn. |
| Parse(ICollection) | Parses a column from a collection. |
| Parse(ICollection, Boolean) | Parses a column from a collection. |
| Parse(ICollection, String) | Parses a column from a collection. |
| Parse(ICollection, String, Boolean) | Parses a column from a collection. |
| Permute | Permutes the objects in this column by the given permutation vector (ranks). |
| RemoveAt | Removes the object from this column at the given position. |
| SetClone(DFColumn, DFColumn) | Set the memebers of the clone. |
| SetClone(DFColumn, DFColumn, Subset) | Set the memebers of the clone. |
| SubColumn(Slice) | Gets the subcolumn specified by the given Slice. |
| SubColumn(Subset) | Gets the subcolumn specified by the given Subset. |
| Swap | Swaps the position of the given elements in the column. |
| ToArray | Exports the contents of this column to an array. |
| ToDoubleArray | Extracts the contents of a column to an array of doubles. |
| ToDoubleVector | Extracts the contents of a column to a DoubleVector. |
| ToIntArray | Extracts the contents of a column to an array of integers. |
| ToString |
Returns a formatted string representation of this column.
(Overrides ObjectToString) |
| ToString(Int32) | Returns formatted representation. |
| ToString(Int32, String) | Returns formatted representation. |
| ToStringArray | Exports the contents of this column to an array of strings. |
| ToStringArray(String) | Exports the contents of this column to an array of strings. |
Fields| Name | Description | |
|---|---|---|
 | label_ | The label in the header of this column. Can be changed. |
| list_ | An array list of column elements. |
| missingValue_ | Value used to represent missing values in this column. |
| name_ | The name of this column. Must be set in the constructor. |
See AlsoReference
Inheritance Hierarchy