ArrowStringDataFrameColumn Class
Definition
Important
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An immutable column to hold Arrow style strings
public class ArrowStringDataFrameColumn : Microsoft.Data.Analysis.DataFrameColumn, System.Collections.Generic.IEnumerable<string>type ArrowStringDataFrameColumn = class
inherit DataFrameColumn
interface seq<string>
interface IEnumerablePublic Class ArrowStringDataFrameColumn
Inherits DataFrameColumn
Implements IEnumerable(Of String)- Inheritance
- Implements
Constructors
| ArrowStringDataFrameColumn(String, ReadOnlyMemory<Byte>, ReadOnlyMemory<Byte>, ReadOnlyMemory<Byte>, Int32, Int32) |
Constructs an ArrowStringDataFrameColumn with the given |
| ArrowStringDataFrameColumn(String) |
Constructs an empty ArrowStringDataFrameColumn with the given |
Properties
| DataType |
The type of data this column holds. (Inherited from DataFrameColumn) |
| Item[Int64, Int32] |
Returns |
| Item[Int64] |
Indexer to get values. This is an immutable column |
| Length |
The length of this column (Inherited from DataFrameColumn) |
| Name |
The column name. (Inherited from DataFrameColumn) |
| NullCount |
The number of |
Methods
| Abs(Boolean) |
Updates each numeric element with its absolute numeric value (Inherited from DataFrameColumn) |
| Add(DataFrameColumn, Boolean) |
Performs element-wise addition (Inherited from DataFrameColumn) |
| Add<T>(T, Boolean) |
Performs an element-wise addition on each value in the column (Inherited from DataFrameColumn) |
| AddDataViewColumn(DataViewSchema+Builder) |
Adds a new DataViewSchema.Column to the specified builder for the current column. |
| AddValueUsingCursor(DataViewRowCursor, Delegate) |
Appends a value to this DataFrameColumn using |
| All() |
Returns whether all the elements are True (Inherited from DataFrameColumn) |
| And(Boolean, Boolean) |
Performs an element-wise boolean And on each value in the column (Inherited from DataFrameColumn) |
| And(DataFrameColumn, Boolean) |
Performs element-wise boolean And (Inherited from DataFrameColumn) |
| Any() |
Returns whether any element is True (Inherited from DataFrameColumn) |
| Apply(Func<String,String>) |
Applies a function to all the values |
| Clamp<U>(U, U, Boolean) | |
| ClampImplementation<U>(U, U, Boolean) |
Clamps values beyond the specified thresholds (Inherited from DataFrameColumn) |
| Clone(DataFrameColumn, Boolean, Int64) |
Clone column to produce a copy potentially changing the order of values by supplying mapIndices and an invert flag |
| CloneImplementation(DataFrameColumn, Boolean, Int64) |
Clone column to produce a copy potentially changing the order of values by supplying mapIndices and an invert flag (Inherited from DataFrameColumn) |
| CumulativeMax(Boolean) |
Updates each element with its cumulative maximum (Inherited from DataFrameColumn) |
| CumulativeMax(IEnumerable<Int64>, Boolean) |
Updates column values at rowIndices with its cumulative rowIndices maximum (Inherited from DataFrameColumn) |
| CumulativeMin(Boolean) |
Updates each element with its cumulative minimum (Inherited from DataFrameColumn) |
| CumulativeMin(IEnumerable<Int64>, Boolean) |
Updates column values at rowIndices with its cumulative rowIndices minimum (Inherited from DataFrameColumn) |
| CumulativeProduct(Boolean) |
Updates each element with its cumulative product (Inherited from DataFrameColumn) |
| CumulativeProduct(IEnumerable<Int64>, Boolean) |
Updates column values at rowIndices with its cumulative rowIndices product (Inherited from DataFrameColumn) |
| CumulativeSum(Boolean) |
Updates each element with its cumulative sum (Inherited from DataFrameColumn) |
| CumulativeSum(IEnumerable<Int64>, Boolean) |
Updates column values at rowIndices with its cumulative rowIndices sum (Inherited from DataFrameColumn) |
| Description() |
Returns a DataFrameColumn with statistics that describe the column (Inherited from DataFrameColumn) |
| Divide(DataFrameColumn, Boolean) |
Performs element-wise division (Inherited from DataFrameColumn) |
| Divide<T>(T, Boolean) |
Performs an element-wise division on each value in the column (Inherited from DataFrameColumn) |
| ElementwiseEquals(DataFrameColumn) |
Performs element-wise equals |
| ElementwiseEquals(String) |
Returns a boolean column that is the result of an elementwise equality comparison of each value in the column with |
| ElementwiseEquals<T>(T) |
Performs an element-wise equals on each value in the column |
| ElementwiseGreaterThan(DataFrameColumn) |
Performs element-wise greater than (Inherited from DataFrameColumn) |
| ElementwiseGreaterThan<T>(T) |
Performs an element-wise greater than on each value in the column (Inherited from DataFrameColumn) |
| ElementwiseGreaterThanOrEqual(DataFrameColumn) |
Performs element-wise greater than or equal (Inherited from DataFrameColumn) |
| ElementwiseGreaterThanOrEqual<T>(T) |
Performs an element-wise greater than or equal on each value in the column (Inherited from DataFrameColumn) |
| ElementwiseIsNotNull() |
Performs an element-wise not equal to Null on each value in the column (Inherited from DataFrameColumn) |
| ElementwiseIsNull() |
Performs an element-wise equal to Null on each value in the column (Inherited from DataFrameColumn) |
| ElementwiseLessThan(DataFrameColumn) |
Performs element-wise less than (Inherited from DataFrameColumn) |
| ElementwiseLessThan<T>(T) |
Performs an element-wise less than on each value in the column (Inherited from DataFrameColumn) |
| ElementwiseLessThanOrEqual(DataFrameColumn) |
Performs element-wise less than or equal (Inherited from DataFrameColumn) |
| ElementwiseLessThanOrEqual<T>(T) |
Performs an element-wise less than or equal on each value in the column (Inherited from DataFrameColumn) |
| ElementwiseNotEquals(DataFrameColumn) |
Performs element-wise not-equals |
| ElementwiseNotEquals(String) |
Returns a boolean column that is the result of an elementwise not-equal comparison of each value in the column with |
| ElementwiseNotEquals<T>(T) |
Performs an element-wise not-equals on each value in the column |
| FillNulls(Object, Boolean) |
Returns a new column with |
| FillNulls(String, Boolean) | System.Object.FillNulls(System.String,System.Boolean) |
| FillNullsImplementation(Object, Boolean) | |
| Filter<U>(U, U) | |
| FilterImplementation<U>(U, U) |
Returns a new column filtered by the lower and upper bounds (Inherited from DataFrameColumn) |
| GetArrowField() | System.Object.GetArrowField |
| GetDataViewGetter(DataViewRowCursor) |
Creates a ValueGetter<TValue> that will return the value of the column for the row the cursor is referencing. |
| GetEnumerator() |
Returns an enumerator that iterates through the string values in this column. |
| GetEnumeratorCore() |
Returns an enumerator that iterates this column. |
| GetGroupedOccurrences(DataFrameColumn, HashSet<Int64>) | |
| GetGroupedOccurrences<TKey>(DataFrameColumn, HashSet<Int64>) |
Get occurences of each value from this column in other column, grouped by this value (Inherited from DataFrameColumn) |
| GetMaxRecordBatchLength(Int64) |
Returns the max number of values that are contiguous in memory |
| GetReadOnlyDataBuffers() |
Returns an enumeration of immutable buffers representing the underlying values in the Apache Arrow format |
| GetReadOnlyNullBitMapBuffers() |
Returns an enumeration of immutable ReadOnlyMemory<T> buffers representing |
| GetReadOnlyOffsetsBuffers() |
Returns an enumeration of immutable ReadOnlyMemory<T> representing offsets into its corresponding Data buffer. The Apache Arrow format specifies how the offset buffer encodes the length of each value in the Data buffer |
| GetValue(Int64) |
Returns the value at |
| GetValueGetterUsingCursor(DataViewRowCursor, DataViewSchema+Column) |
Returns the ValueGetter for each active column in |
| GetValues(Int64, Int32) |
Returns |
| GroupBy(Int32, DataFrame) | System.Object.GroupBy(System.Int32,Microsoft.Data.Analysis.DataFrame) |
| GroupColumnValues<TKey>(HashSet<Int64>) |
Groups the rows of this column by their value. |
| HasDescription() |
Used to exclude columns from the Description method (Inherited from DataFrameColumn) |
| Info() |
Returns a StringDataFrameColumn containing the DataType and Length of this column (Inherited from DataFrameColumn) |
| IsNumericColumn() |
Determines if the column is of a numeric type (Inherited from DataFrameColumn) |
| IsValid(Int64) |
Indicates if the value at this |
| LeftShift(Int32, Boolean) |
Performs an element-wise left shift on each value in the column (Inherited from DataFrameColumn) |
| Max() |
Returns the maximum of the values in the column (Inherited from DataFrameColumn) |
| Max(IEnumerable<Int64>) |
Returns the maximum of the values at rowIndices (Inherited from DataFrameColumn) |
| Mean() |
Returns the mean of the values in the column. Throws if this is not a numeric column (Inherited from DataFrameColumn) |
| Median() |
Returns the median of the values in the column. Throws if this is not a numeric column (Inherited from DataFrameColumn) |
| Min() |
Returns the minimum of the values in the column (Inherited from DataFrameColumn) |
| Min(IEnumerable<Int64>) |
Returns the minimum of the values at the rowIndices (Inherited from DataFrameColumn) |
| Modulo(DataFrameColumn, Boolean) |
Performs element-wise modulus (Inherited from DataFrameColumn) |
| Modulo<T>(T, Boolean) |
Performs an element-wise modulus operation on each value in the column (Inherited from DataFrameColumn) |
| Multiply(DataFrameColumn, Boolean) |
Performs element-wise multiplication (Inherited from DataFrameColumn) |
| Multiply<T>(T, Boolean) |
Performs an element-wise multiplication on each value in the column (Inherited from DataFrameColumn) |
| Or(Boolean, Boolean) |
Performs an element-wise boolean Or on each value in the column (Inherited from DataFrameColumn) |
| Or(DataFrameColumn, Boolean) |
Performs element-wise boolean Or (Inherited from DataFrameColumn) |
| Product() |
Returns the product of the values in the column (Inherited from DataFrameColumn) |
| Product(IEnumerable<Int64>) |
Returns the product of the values at the rowIndices (Inherited from DataFrameColumn) |
| Resize(Int64) |
Called internally from Append, Merge and GroupBy. Resizes the column to the specified length to allow setting values by indexing (Inherited from DataFrameColumn) |
| ReverseAdd<T>(T, Boolean) |
Performs a reversed element-wise addition on each value in the column (Inherited from DataFrameColumn) |
| ReverseAnd(Boolean, Boolean) |
Performs a reversed element-wise boolean And on each value in the column (Inherited from DataFrameColumn) |
| ReverseDivide<T>(T, Boolean) |
Performs a reversed element-wise division on each value in the column (Inherited from DataFrameColumn) |
| ReverseModulo<T>(T, Boolean) |
Performs a reversed element-wise modulus operation on each value in the column (Inherited from DataFrameColumn) |
| ReverseMultiply<T>(T, Boolean) |
Performs a reversed element-wise multiplication on each value in the column (Inherited from DataFrameColumn) |
| ReverseOr(Boolean, Boolean) |
Performs a reversed element-wise boolean Or on each value in the column (Inherited from DataFrameColumn) |
| ReverseSubtract<T>(T, Boolean) |
Performs a reversed element-wise subtraction on each value in the column (Inherited from DataFrameColumn) |
| ReverseXor(Boolean, Boolean) |
Performs a reversed element-wise boolean Xor on each value in the column (Inherited from DataFrameColumn) |
| RightShift(Int32, Boolean) |
Performs an element-wise right shift on each value in the column (Inherited from DataFrameColumn) |
| Round(Boolean) |
Calls Math.Round on each value in a column (Inherited from DataFrameColumn) |
| SetName(String, DataFrame) |
Obsolete.
Updates the name of this column. (Inherited from DataFrameColumn) |
| SetName(String) |
Updates the column name. (Inherited from DataFrameColumn) |
| SetValue(Int64, Object) |
Sets the value at |
| Sort(Boolean) |
Returns a copy of this column sorted by its values |
| Subtract(DataFrameColumn, Boolean) |
Performs element-wise subtraction (Inherited from DataFrameColumn) |
| Subtract<T>(T, Boolean) |
Performs an element-wise subtraction on each value in the column (Inherited from DataFrameColumn) |
| Sum() |
Returns the sum of the values in the column (Inherited from DataFrameColumn) |
| Sum(IEnumerable<Int64>) |
Returns the sum of the values at the rowIndices (Inherited from DataFrameColumn) |
| ToArrowArray(Int64, Int32) | System.Object.ToArrowArray(System.Int64,System.Int32) |
| ValueCounts() |
Returns a DataFrame containing counts of unique values |
| Xor(Boolean, Boolean) |
Performs an element-wise boolean Xor on each value in the column (Inherited from DataFrameColumn) |
| Xor(DataFrameColumn, Boolean) |
Performs element-wise boolean Xor (Inherited from DataFrameColumn) |
Explicit Interface Implementations
| IEnumerable.GetEnumerator() | (Inherited from DataFrameColumn) |