 | DFDate |
Class DFDataTimeColumn represents a column of DataTime data in a data frame.
Inheritance HierarchyNamespace: CenterSpace.NMath.Core
Assembly: NMath (in NMath.dll) Version: 7.4
SyntaxThe DFDateTimeColumn type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | DFDateTimeColumn | Default constructor. |
 | DFDateTimeColumn(String) | Constructs a DFDateTimeColumn instance with the given name, a date format as specified in StatsSettings.DateTimeFormat and a missing value as specified in StatsSettings.DateTimeMissingValue. |
| DFDateTimeColumn(String, IDFColumn) | Constructs a DFDateTimeColumn instance with the given name. Column elements are initialized with data from the given column, after conversion to DateTime. |
| DFDateTimeColumn(String, DateTime) | Constructs a DFDateTimeColumn instance with the given name, a date format as specified in StatsSettings.DateTimeFormat and a missing value as specified in StatsSettings.DateTimeMissingValue. Column elements are initialized with data from the given array. |
Properties| Name | Description | |
|---|---|---|
 | ColumnType |
Gets the type of the objects held by this column.
(Overrides DFColumnColumnType) |
| Count |
Gets the number of ojects in this column.
(Inherited from DFColumn) |
| DateFormat | Gets and sets the date format. |
| IsNumeric |
Returns true if the objects in this column are integers or floating point
numbers; otherwise, false.
(Inherited from DFColumn) |
| IsSynchronized |
Returns false. Access to this class is not synchronized.
(Inherited from DFColumn) |
| Item | Gets the object in this column at the given position. |
| Label |
Gets and sets the label in the header of this column.
(Inherited from DFColumn) |
| MissingValue | Gets and sets the value used to represent missing values in this column. |
| Name |
Gets the name of this column.
(Inherited from DFColumn) |
| SyncRoot |
Gets an object that can be used to synchronize access to this ICollection.
(Inherited from DFColumn) |
Methods| Name | Description | |
|---|---|---|
| Add |
Adds an object to this column.
(Inherited from DFColumn) |
| Apply(String, FuncDateTime, DateTime) | Returns a new column with the given name and same size as this column, whose values are the result of applying the given unary function to each element of this column. |
| Apply(String, FuncDateTime, DateTime, DateTime, DFDateTimeColumn) | Returns a new column with the given name and same size as this column, whose values are the result of applying the given binary function to each element of this column. The first parameter to the binary function is an element of self; the second parameter is the corresponding element of the passed column. |
| Apply(String, FuncDateTime, DateTime, DateTime, DateTime) | Returns a new column with the given name and same size as this column, whose values are the result of applying the given binary function to each element of this column. The first parameter to the binary function is the column element; the second parameter is the passed date. |
| Clean | Returns a copy of this column without missing values. |
| Clone |
Returns a deep copy of this column.
(Overrides DFColumnClone) |
| Convert |
Converts an object to the type held by this column.
(Overrides DFColumnConvert(Object)) |
| CopyTo(Array) |
Copies the contents of this column into the given array, beginning
at the first position within the array.
(Inherited from DFColumn) |
| CopyTo(Array, Int32) |
Copies the contents of this column into the given array, beginning
at the given position within the array.
(Inherited from DFColumn) |
| GetEnumerator |
Returns an enumerator for this column.
(Inherited from DFColumn) |
| GetFactor |
Creates a factor from this column.
(Inherited from DFColumn) |
| GetFactor(Object) |
Creates a factor from this column.
(Inherited from DFColumn) |
| Insert |
Inserts an object into this column and the given position.
(Inherited from DFColumn) |
| IsMissing |
Returns true if the element at the given position is missing;
otherwise, false.
(Overrides DFColumnIsMissing(Int32)) |
| Permute |
Permutes the objects in this column by the given permutation vector (ranks).
(Inherited from DFColumn) |
| RemoveAt |
Removes the object from this column at the given position.
(Inherited from DFColumn) |
| SubColumn(Slice) |
Gets the subcolumn specified by the given Slice.
(Inherited from DFColumn) |
| SubColumn(Subset) |
Gets the subcolumn specified by the given Subset.
(Overrides DFColumnSubColumn(Subset)) |
| Swap |
Swaps the position of the given elements in the column.
(Inherited from DFColumn) |
| ToArray |
Exports the contents of this column to an array.
(Inherited from DFColumn) |
| ToDoubleArray |
Extracts the contents of a column to an array of doubles.
(Inherited from DFColumn) |
| ToDoubleVector |
Extracts the contents of a column to a DoubleVector.
(Inherited from DFColumn) |
| ToIntArray |
Extracts the contents of a column to an array of integers.
(Inherited from DFColumn) |
| ToString |
Returns a formatted string representation of this column.
(Inherited from DFColumn) |
| ToString(Int32) |
Formatted string representation of the date. Uses StatsSettings format.
(Overrides DFColumnToString(Int32)) |
| ToString(Int32, String) |
Formatted string representation of the date.
(Overrides DFColumnToString(Int32, String)) |
| ToStringArray |
Exports the contents of this column to an array of strings. Uses StatsSettings format.
(Overrides DFColumnToStringArray) |
| ToStringArray(String) |
Exports the contents of this column to a formatted array of strings.
(Overrides DFColumnToStringArray(String)) |
| Transform(FuncDateTime) | Modifies the elements of this column by applying the given no-argument function to each element. |
| Transform(FuncDateTime, DateTime) | Modifies the elements of this column by applying the given unary function to each element. |
| Transform(FuncDateTime, DateTime, DateTime, DFDateTimeColumn) | Modifies the contents of this column by applying the given binary function to each element. The first parameter to the binary function is an element of self; the second parameter is the corresponding element of the passed column. |
| Transform(FuncDateTime, DateTime, DateTime, DateTime) | Modifies the contents of this column by applying the given binary function to each element. The first parameter to the binary function is the column element; the second parameter is the passed date. |
Fields| Name | Description | |
|---|---|---|
 | label_ |
The label in the header of this column. Can be changed.
(Inherited from DFColumn) |
| list_ |
An array list of column elements.
(Inherited from DFColumn) |
| missingValue_ |
Value used to represent missing values in this column.
(Inherited from DFColumn) |
| name_ |
The name of this column. Must be set in the constructor.
(Inherited from DFColumn) |
RemarksElements are stored as System.DateTime.
See Also