DataFrame Class
Definition
Important
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A DataFrame to support indexing, binary operations, sorting, selection and other APIs. This will eventually also expose an IDataView for ML.NET
public class DataFrame : Microsoft.ML.IDataViewtype DataFrame = class
interface IDataViewPublic Class DataFrame
Implements IDataView- Inheritance
-
DataFrame
- Implements
Constructors
| DataFrame(DataFrameColumn[]) | |
| DataFrame(IEnumerable<DataFrameColumn>) |
Constructs a DataFrame with |
Properties
| Columns |
Returns the columns contained in the DataFrame as a DataFrameColumnCollection |
| Item[IEnumerable<Boolean>] |
Returns a new DataFrame using the boolean values in |
| Item[IEnumerable<Int32>] |
Returns a new DataFrame using the row indices in |
| Item[IEnumerable<Int64>] |
Returns a new DataFrame using the row indices in |
| Item[Int64, Int32] |
An Indexer to get or set values. |
| Item[PrimitiveDataFrameColumn<Boolean>] |
Returns a new DataFrame using the boolean values in filter |
| Item[PrimitiveDataFrameColumn<Int32>] |
Returns a new DataFrame using the row indices in |
| Item[PrimitiveDataFrameColumn<Int64>] |
Returns a new DataFrame using the row indices in |
| Item[String] |
An indexer based on Name |
| Rows |
Returns a DataFrameRowCollection that contains a view of the rows in this DataFrame |
Methods
| Add<T>(IReadOnlyList<T>, Boolean) | |
| Add<T>(T, Boolean) |
Performs an element-wise addition on each column |
| AddPrefix(String, Boolean) |
Adds a prefix to the column names |
| AddSuffix(String, Boolean) |
Adds a suffix to the column names |
| And(Boolean, Boolean) |
Performs an element-wise boolean And on each column |
| And(IReadOnlyList<Boolean>, Boolean) | |
| Append(IEnumerable<DataFrameRow>, Boolean, CultureInfo) |
Appends rows to the DataFrame |
| Append(IEnumerable<KeyValuePair<String,Object>>, Boolean, CultureInfo) |
Appends a row by enumerating column names and values from |
| Append(IEnumerable<Object>, Boolean, CultureInfo) |
Appends a row to the DataFrame |
| Clamp<U>(U, U, Boolean) |
Clamps values beyond the specified thresholds on numeric columns |
| Clone() |
Returns a full copy |
| Description() |
Generates descriptive statistics that summarize each numeric column |
| Divide<T>(IReadOnlyList<T>, Boolean) | |
| Divide<T>(T, Boolean) |
Performs an element-wise division on each column |
| DropNulls(DropNullOptions) |
Returns a DataFrame with no missing values |
| ElementwiseEquals<T>(IReadOnlyList<T>) | |
| ElementwiseEquals<T>(T) |
Performs an element-wise equals on each column |
| ElementwiseGreaterThan<T>(IReadOnlyList<T>) | |
| ElementwiseGreaterThan<T>(T) |
Performs an element-wise greater than on each column |
| ElementwiseGreaterThanOrEqual<T>(IReadOnlyList<T>) | |
| ElementwiseGreaterThanOrEqual<T>(T) |
Performs an element-wise greater than or equal on each column |
| ElementwiseLessThan<T>(IReadOnlyList<T>) | |
| ElementwiseLessThan<T>(T) |
Performs an element-wise less than on each column |
| ElementwiseLessThanOrEqual<T>(IReadOnlyList<T>) | |
| ElementwiseLessThanOrEqual<T>(T) |
Performs an element-wise less than or equal on each column |
| ElementwiseNotEquals<T>(IReadOnlyList<T>) | |
| ElementwiseNotEquals<T>(T) |
Performs an element-wise not-equals on each column |
| FillNulls(IList<Object>, Boolean) |
Fills |
| FillNulls(Object, Boolean) |
Fills |
| Filter(PrimitiveDataFrameColumn<Boolean>) |
Returns a new DataFrame using the boolean values in |
| Filter(PrimitiveDataFrameColumn<Int32>) |
Returns a new DataFrame using the row indices in |
| Filter(PrimitiveDataFrameColumn<Int64>) |
Returns a new DataFrame using the row indices in |
| FromArrowRecordBatch(RecordBatch) |
Wraps a DataFrame around an Arrow Apache.Arrow.RecordBatch without copying data |
| FromSchema(DbDataReader) | |
| GroupBy(String) |
Groups the rows of the DataFrame by unique values in the |
| GroupBy<TKey>(String) |
Groups the rows of the DataFrame by unique values in the |
| Head(Int32) |
Returns the first |
| Info() |
Generates a concise summary of each column in the DataFrame |
| Join(DataFrame, String, String, JoinAlgorithm) |
Joins columns of another DataFrame |
| LeftShift(Int32, Boolean) |
Performs an element-wise left shift on each column |
| LoadCsv(Stream, Char, Boolean, String[], Type[], Int64, Int32, Boolean, Encoding, Boolean, CultureInfo) |
Reads a seekable stream of CSV data into a DataFrame. |
| LoadCsv(String, Char, Boolean, String[], Type[], Int32, Int32, Boolean, Encoding, Boolean, CultureInfo) |
Reads a text file as a DataFrame. |
| LoadCsvFromString(String, Char, Boolean, String[], Type[], Int64, Int32, Boolean, Boolean, CultureInfo) |
Reads CSV data passed in as a string into a DataFrame. |
| LoadFrom(DbDataAdapter) | |
| LoadFrom(DbDataReader) | |
| LoadFrom(IEnumerable<IList<Object>>, IList<ValueTuple<String,Type>>) | |
| Merge(DataFrame, String[], String[], String, String, JoinAlgorithm) | |
| Merge<TKey>(DataFrame, String, String, String, String, JoinAlgorithm) |
Merge DataFrames with a database style join (for backward compatibility) |
| Modulo<T>(IReadOnlyList<T>, Boolean) | |
| Modulo<T>(T, Boolean) |
Performs an element-wise modulus operation on each column |
| Multiply<T>(IReadOnlyList<T>, Boolean) | |
| Multiply<T>(T, Boolean) |
Performs an element-wise multiplication on each column |
| Or(Boolean, Boolean) |
Performs an element-wise boolean Or on each column |
| Or(IReadOnlyList<Boolean>, Boolean) | |
| OrderBy(String) |
Orders the data frame by a specified column. |
| OrderByDescending(String) |
Orders the data frame by a specified column in descending order. |
| ReverseAdd<T>(T, Boolean) |
Performs a reversed element-wise addition on each column |
| ReverseAnd(Boolean, Boolean) |
Performs a reversed element-wise boolean And on each column |
| ReverseDivide<T>(T, Boolean) |
Performs a reversed element-wise division on each column |
| ReverseModulo<T>(T, Boolean) |
Performs a reversed element-wise modulus operation on each column |
| ReverseMultiply<T>(T, Boolean) |
Performs a reversed element-wise multiplication on each column |
| ReverseOr(Boolean, Boolean) |
Performs a reversed element-wise boolean Or on each column |
| ReverseSubtract<T>(T, Boolean) |
Performs a reversed element-wise subtraction on each column |
| ReverseXor(Boolean, Boolean) |
Performs a reversed element-wise boolean Xor on each column |
| RightShift(Int32, Boolean) |
Performs an element-wise right shift on each column |
| Sample(Int32) |
Returns a random sample of rows |
| SaveCsv(DataFrame, Stream, Char, Boolean, Encoding, CultureInfo) |
Saves a DataFrame into a CSV. |
| SaveCsv(DataFrame, String, Char, Boolean, Encoding, CultureInfo) |
Saves a DataFrame into a CSV. |
| SaveTo(DataTable) | |
| SaveTo(DbDataAdapter, DbProviderFactory) | |
| Subtract<T>(IReadOnlyList<T>, Boolean) | |
| Subtract<T>(T, Boolean) |
Performs an element-wise subtraction on each column |
| Tail(Int32) |
Returns the last |
| ToArrowRecordBatches() |
Returns an IEnumerable<T> mostly without copying data |
| ToString() |
A preview of the contents of this DataFrame as a string. |
| ToTable() | |
| WriteCsv(DataFrame, Stream, Char, Boolean, Encoding, CultureInfo) |
Obsolete.
Writes a DataFrame into a CSV. |
| WriteCsv(DataFrame, String, Char, Boolean, Encoding, CultureInfo) |
Obsolete.
Writes a DataFrame into a CSV. |
| Xor(Boolean, Boolean) |
Performs an element-wise boolean Xor on each column |
| Xor(IReadOnlyList<Boolean>, Boolean) | |
Operators
Explicit Interface Implementations
Extension Methods
| ToDataFrame(IDataView, Int64, String[]) |
Returns a DataFrame with the first |
| ToDataFrame(IDataView, Int64) |
Returns a DataFrame from this |
| ToDataFrame(IDataView, String[]) |
Returns a DataFrame with the first 100 rows of this |