DataViewRowCursor

Commands\DataCommand.cs (1)

159using (var cursor = data.GetRowCursorForAllColumns())

Data\DataViewUtils.cs (29)

Data\ITransposeDataView.cs (1)

18/// (naturally, as opposed to row-by-row through an <see cref="DataViewRowCursor"/>). This interface

Data\RowCursorUtils.cs (5)

486/// <param name="columnsNeeded">The subset of columns from the <see cref="DataViewSchema"/> that are needed from this <see cref="DataViewRowCursor"/>.</param> 525public DataViewRowCursor GetRowCursor(IEnumerable<DataViewSchema.Column> columnNeeded, Random rand = null) 532public DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnNeeded, int n, Random rand = null) 535return new DataViewRowCursor[] { GetRowCursor(columnNeeded, rand) }; 614+ nameof(DataViewRowCursor.MoveNext) + ", or at any point after that method returned false.";

Data\SlotCursor.cs (3)

12/// what <see cref="DataViewRowCursor"/> is to <see cref="IDataView"/>. 79/// for <see cref="DataViewRowCursor"/>s. 103/// analogous to the <see cref="RootCursorBase"/> for <see cref="DataViewRowCursor"/>s.

DataDebuggerPreview.cs (1)

44using (var cursor = data.GetRowCursorForAllColumns())

DataLoadSave\Binary\BinaryLoader.cs (4)

1189private DataViewRowCursor GetRowCursorCore(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 1202public DataViewRowCursor GetRowCursor(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 1208public DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null) 1211return new DataViewRowCursor[] { GetRowCursorCore(columnsNeeded, rand) };

DataLoadSave\Binary\BinarySaver.cs (6)

95public static WritePipe Create(BinarySaver parent, DataViewRowCursor cursor, ColumnCodec col) 116public WritePipe(BinarySaver parent, DataViewRowCursor cursor, ColumnCodec col) 587using (DataViewRowCursor cursor = data.GetRowCursor(data.Schema.Where(c => activeSet.Contains(c.Index)))) 745using (DataViewRowCursor cursor = data.GetRowCursor(data.Schema.Where(x => active.Contains(x.Index)), rand)) 775private delegate void EstimatorDelegate(DataViewRowCursor cursor, ColumnCodec col, 778private void EstimatorCore<T>(DataViewRowCursor cursor, ColumnCodec col,

DataLoadSave\Database\DatabaseLoader.cs (3)

720public DataViewRowCursor GetRowCursor(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 727public DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null) 729return new DataViewRowCursor[] { GetRowCursor(columnsNeeded, rand) };

DataLoadSave\Database\DatabaseLoaderCursor.cs (1)

96public static DataViewRowCursor Create(DatabaseLoader parent, DatabaseSource source, bool[] active)

DataLoadSave\LegacyCompositeDataLoader.cs (2)

585public DataViewRowCursor GetRowCursor(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 593public DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null)

DataLoadSave\Text\TextLoader.cs (2)

1662public DataViewRowCursor GetRowCursor(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 1669public DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null)

DataLoadSave\Text\TextLoaderCursor.cs (5)

138public static DataViewRowCursor Create(TextLoader parent, IMultiStreamSource files, bool[] active) 155public static DataViewRowCursor[] CreateSet(TextLoader parent, IMultiStreamSource files, bool[] active, int n) 170return new DataViewRowCursor[1] { new Cursor(parent, stats, active, reader, srcNeeded, 1) }; 172var cursors = new DataViewRowCursor[cthd]; 185foreach (var curs in cursors)

DataLoadSave\Text\TextSaver.cs (5)

60public static ValueWriter Create(DataViewRowCursor cursor, int col, char sep) 161public VecValueWriter(DataViewRowCursor cursor, VectorDataViewType type, int source, char sep) 226public ValueWriter(DataViewRowCursor cursor, PrimitiveDataViewType type, int source, char sep) 428using (var cursor = data.GetRowCursor(activeCols)) 576public void Run(DataViewRowCursor cursor, ref long count, out int minLen, out int maxLen)

DataLoadSave\Transpose\TransposeLoader.cs (9)

320private static readonly FuncInstanceMethodInfo1<TransposeLoader, DataViewRowCursor, SlotCursor> _getSlotCursorCoreMethodInfo 321= FuncInstanceMethodInfo1<TransposeLoader, DataViewRowCursor, SlotCursor>.Create(target => target.GetSlotCursorCore<int>); 622public DataViewRowCursor GetRowCursor(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 630public DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null) 634return new DataViewRowCursor[] { GetRowCursor(columnsNeeded, rand) }; 650DataViewRowCursor inputCursor = view.GetRowCursorForAllColumns(); 665private SlotCursor GetSlotCursorCore<T>(DataViewRowCursor inputCursor) 674private readonly DataViewRowCursor _rowCursor; 676public SlotCursor(TransposeLoader parent, DataViewRowCursor cursor)

DataView\AppendRowsDataView.cs (8)

147public DataViewRowCursor GetRowCursor(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 154public DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null) 156return new DataViewRowCursor[] { GetRowCursor(columnsNeeded, rand) }; 216private DataViewRowCursor _currentCursor; 307private readonly DataViewRowCursor[] _cursorSet; 321_cursorSet = new DataViewRowCursor[counts.Length]; 357var rowCursor = _cursorSet[_currentSourceIndex]; 385foreach (DataViewRowCursor c in _cursorSet)

DataView\ArrayDataViewBuilder.cs (3)

235public DataViewRowCursor GetRowCursor(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 243public DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null) 248return new DataViewRowCursor[] { new Cursor(_host, this, predicate, rand) };

DataView\BatchDataViewMapperBase.cs (12)

DataView\CacheDataView.cs (16)

DataView\DataViewConstructionUtils.cs (5)

484public abstract DataViewRowCursor GetRowCursor(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null); 486public DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null) 620public override DataViewRowCursor GetRowCursor(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 703public override DataViewRowCursor GetRowCursor(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 772public override DataViewRowCursor GetRowCursor(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null)

DataView\DataViewExtensions.cs (9)

18/// <param name="columnsNeeded">The columns requested by this <see cref="DataViewRowCursor"/>, or as otherwise called, the active columns. 21public static DataViewRowCursor GetRowCursor(this IDataView dv, params DataViewSchema.Column[] columnsNeeded) 27$" is not present in the {nameof(IDataView)} where the {nameof(DataViewRowCursor)} is being requested."); 37/// <param name="columnNeeded">The column requested by this <see cref="DataViewRowCursor"/>, or as otherwise called, the active column.</param> 39public static DataViewRowCursor GetRowCursor(this IDataView dv, DataViewSchema.Column columnNeeded) 42$" is not present in the {nameof(IDataView)} where the {nameof(DataViewRowCursor)} is being requested."); 48/// Get a row cursor. No colums are needed by this <see cref="DataViewRowCursor"/>. 50public static DataViewRowCursor GetRowCursor(this IDataView dv) => dv.GetRowCursor(Enumerable.Empty<DataViewSchema.Column>()); 55public static DataViewRowCursor GetRowCursorForAllColumns(this IDataView dv) => dv.GetRowCursor(dv.Schema);

DataView\EmptyDataView.cs (2)

33public DataViewRowCursor GetRowCursor(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 39public DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null)

DataView\LambdaFilter.cs (5)

111protected override DataViewRowCursor GetRowCursorCore(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 120var input = Source.GetRowCursor(inputCols, rand); 124public override DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null) 137var cursors = new DataViewRowCursor[inputs.Length]; 161public Cursor(Impl<T1, T2> parent, DataViewRowCursor input, bool[] active)

DataView\OpaqueDataView.cs (2)

28public DataViewRowCursor GetRowCursor(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 31public DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null)

DataView\RowToRowMapperTransform.cs (5)

40/// <see cref="DataViewRowCursor"/> out of this, the <paramref name="disposer"/> delegate (if non-null) should be called 189protected override DataViewRowCursor GetRowCursorCore(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 197public override DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null) 211var cursors = new DataViewRowCursor[inputs.Length]; 368public Cursor(IChannelProvider provider, DataViewRowCursor input, RowToRowMapperTransform parent, bool[] active)

DataView\Transposer.cs (18)

287public DataViewRowCursor GetRowCursor(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 290public DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null) 384using (var cursor = _view.GetRowCursor(currentColumn)) 536using (var cursor = _view.GetRowCursor(currentColumn)) 831public DataViewRowCursor GetRowCursor(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 842public DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null) 1269public Cursor(IChannelProvider provider, DataViewSlicer slicer, DataViewRowCursor input, Func<int, bool> pred, bool[] activeSplitters) 1330private static readonly FuncStaticMethodInfo1<IChannelProvider, SlotCursor, DataViewRowCursor> _getRowCursorShimCoreMethodInfo 1331= new FuncStaticMethodInfo1<IChannelProvider, SlotCursor, DataViewRowCursor>(GetRowCursorShimCore<int>); 1386/// to handle <see cref="DataViewRowCursor"/> and <see cref="DataViewRow"/> but that know nothing about 1394public static DataViewRowCursor GetRowCursorShim(IChannelProvider provider, SlotCursor cursor) 1402private static DataViewRowCursor GetRowCursorShimCore<T>(IChannelProvider provider, SlotCursor cursor) 1412private static readonly FuncInstanceMethodInfo1<SlotDataView, bool, DataViewRowCursor> _getRowCursorMethodInfo 1413= FuncInstanceMethodInfo1<SlotDataView, bool, DataViewRowCursor>.Create(target => target.GetRowCursor<int>); 1449public DataViewRowCursor GetRowCursor(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 1455private DataViewRowCursor GetRowCursor<T>(bool active) 1460public DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null) 1462return new DataViewRowCursor[] { GetRowCursor(columnsNeeded, rand) };

DataView\TypedCursor.cs (3)

187var cursor = _data.GetRowCursor(inputCols, rand); 630private readonly DataViewRowCursor _input; 632public TypedCursor(TypedCursorable<TRow> parent, DataViewRowCursor input)

DataView\ZipDataView.cs (9)

75public DataViewRowCursor GetRowCursor(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 93/// Create an <see cref="DataViewRowCursor"/> with no requested columns on a data view. 97private DataViewRowCursor GetMinimumCursor(IDataView dv) 103public DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null) 105return new DataViewRowCursor[] { GetRowCursor(columnsNeeded, rand) }; 110private readonly DataViewRowCursor[] _cursors; 117public Cursor(ZipDataView parent, DataViewRowCursor[] srcCursors, Func<int, bool> predicate) 153foreach (var cursor in _cursors) 185var rowCursor = _cursors[dv];

Dirty\ChooseColumnsByIndexTransform.cs (5)

245protected override DataViewRowCursor GetRowCursorCore(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 254var input = Source.GetRowCursor(inputCols, rand); 258public sealed override DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null) 272var cursors = new DataViewRowCursor[inputs.Length]; 283public Cursor(IChannelProvider provider, Bindings bindings, DataViewRowCursor input, bool[] active)

Evaluators\AnomalyDetectionEvaluator.cs (3)

606using (var cursor = overall.GetRowCursorForAllColumns()) 670using (var cursor = top.GetRowCursorForAllColumns()) 726using (var cursor = overall.GetRowCursor(overall.Schema.Where(col => col.Name.Equals(AnomalyDetectionEvaluator.OverallMetrics.NumAnomalies) ||

Evaluators\BinaryClassifierEvaluator.cs (7)

830using (var cursor = overall.GetRowCursorForAllColumns()) 879using (var cursor = prCurveView.GetRowCursorForAllColumns()) 896using (var cursor = overall.GetRowCursorForAllColumns()) 909DataViewRowCursor cursor, 957using (var cursor = overall.GetRowCursorForAllColumns()) 1005using (var cursor = prCurveView.GetRowCursorForAllColumns()) 1021using (var cursor = overall.GetRowCursorForAllColumns())

Evaluators\ClusteringEvaluator.cs (1)

86using (var cursor = overall.GetRowCursorForAllColumns())

Evaluators\EvaluatorBase.cs (1)

148using (var cursor = data.GetRowCursor(activeCols))

Evaluators\EvaluatorUtils.cs (4)

276using (var cursor = metricsView.GetRowCursorForAllColumns()) 1103using (var cursor = data.GetRowCursorForAllColumns()) 1476using (var cursor = confusionDataView.GetRowCursor(confusionDataView.Schema.Where(col => col.Index == countIndex || hasStrat && col.Index == stratCol))) 1739using (var cursor = warnings.GetRowCursor(warnings.Schema[MetricKinds.ColumnNames.WarningText]))

Evaluators\MulticlassClassificationEvaluator.cs (1)

568using (var cursor = overall.GetRowCursorForAllColumns())

Evaluators\MultiOutputRegressionEvaluator.cs (1)

679using (var cursor = fold.GetRowCursorForAllColumns())

Evaluators\RankingEvaluator.cs (3)

269using (var cursor = overall.GetRowCursorForAllColumns()) 622public DataViewRowCursor GetRowCursor(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 625public DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null)

Evaluators\RegressionEvaluator.cs (1)

188using (var cursor = overall.GetRowCursorForAllColumns())

Prediction\Calibrator.cs (1)

966using (var cursor = scored.GetRowCursor(cols))

Scorers\RowToRowScorerBase.cs (5)

129protected override DataViewRowCursor GetRowCursorCore(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 138var input = Source.GetRowCursor(inputCols, rand); 142public override DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null) 159var cursors = new DataViewRowCursor[inputs.Length]; 238public Cursor(IChannelProvider provider, RowToRowScorerBase parent, DataViewRowCursor input, bool[] active, IEnumerable<DataViewSchema.Column> activeMapperColumns)

Training\TrainerUtils.cs (17)

Transforms\BindingsWrappedRowCursor.cs (1)

28public BindingsWrappedRowCursor(IChannelProvider provider, DataViewRowCursor input, ColumnBindingsBase bindings)

Transforms\BootstrapSamplingTransformer.cs (7)

168protected override DataViewRowCursor GetRowCursorCore(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 172var input = Source.GetRowCursor(columnsNeeded, _shuffleInput ? new TauswortheHybrid(rgen) : null); 173DataViewRowCursor cursor = new Cursor(this, input, rgen); 179public override DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null) 181var cursor = GetRowCursorCore(columnsNeeded, rand); 182return new DataViewRowCursor[] { cursor }; 195public Cursor(BootstrapSamplingTransformer parent, DataViewRowCursor input, Random rgen)

Transforms\ColumnSelecting.cs (6)

679public DataViewRowCursor GetRowCursor(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 685var inputRowCursor = Source.GetRowCursor(inputCols, rand); 692public DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null) 705var cursors = new DataViewRowCursor[inputs.Length]; 757private readonly DataViewRowCursor _inputCursor; 759public Cursor(IChannelProvider provider, Mapper mapper, DataViewRowCursor input, bool[] active)

Transforms\GenerateNumberTransform.cs (7)

337protected override DataViewRowCursor GetRowCursorCore(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 346var input = Source.GetRowCursor(inputCols); 350public override DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null) 359DataViewRowCursor input; 368var cursors = new DataViewRowCursor[inputs.Length]; 378return new DataViewRowCursor[] { new Cursor(Host, _bindings, input, active) }; 390public Cursor(IChannelProvider provider, Bindings bindings, DataViewRowCursor input, bool[] active)

Transforms\Hashing.cs (1)

227using (DataViewRowCursor srcCursor = input.GetRowCursor(sourceColumnsForInvertHash))

Transforms\NAFilter.cs (5)

207protected override DataViewRowCursor GetRowCursorCore(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 215var input = Source.GetRowCursor(inputCols, rand); 219public override DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null) 231var cursors = new DataViewRowCursor[inputs.Length]; 386public Cursor(NAFilter parent, DataViewRowCursor input, bool[] active)

Transforms\NopTransform.cs (2)

120public DataViewRowCursor GetRowCursor(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 123public DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null)

Transforms\NormalizeColumn.cs (13)

Transforms\Normalizer.cs (8)

144internal abstract IColumnFunctionBuilder MakeBuilder(IHost host, int srcIndex, DataViewType srcType, DataViewRowCursor cursor); 187internal override IColumnFunctionBuilder MakeBuilder(IHost host, int srcIndex, DataViewType srcType, DataViewRowCursor cursor) 205internal override IColumnFunctionBuilder MakeBuilder(IHost host, int srcIndex, DataViewType srcType, DataViewRowCursor cursor) 223internal override IColumnFunctionBuilder MakeBuilder(IHost host, int srcIndex, DataViewType srcType, DataViewRowCursor cursor) 239internal override IColumnFunctionBuilder MakeBuilder(IHost host, int srcIndex, DataViewType srcType, DataViewRowCursor cursor) 263internal override IColumnFunctionBuilder MakeBuilder(IHost host, int srcIndex, DataViewType srcType, DataViewRowCursor cursor) 283internal override IColumnFunctionBuilder MakeBuilder(IHost host, int srcIndex, DataViewType srcType, DataViewRowCursor cursor) 564using (var cursor = data.GetRowCursor(activeCols))

Transforms\PerGroupTransformBase.cs (9)

157public DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null) 160return new DataViewRowCursor[] { GetRowCursor(columnsNeeded, rand) }; 163public DataViewRowCursor GetRowCursor(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 177var inputCursor = Source.GetRowCursor(activeCols, null); 183private DataViewRowCursor GetRowCursorCore(Func<int, bool> predicate) 233private readonly DataViewRowCursor _groupCursor; 234private readonly DataViewRowCursor _input; 249public Cursor(PerGroupTransformBase<TLabel, TScore, TState> parent, DataViewRowCursor input, DataViewRowCursor groupCursor, bool[] active)

Transforms\RangeFilter.cs (17)

Transforms\RowShufflingTransformer.cs (8)

225public static DataViewRowCursor GetShuffledCursor(IChannelProvider provider, int poolRows, DataViewRowCursor cursor, Random rand) 251protected override DataViewRowCursor GetRowCursorCore(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 281var input = _subsetInput.GetRowCursor(columnsNeeded, sourceRand); 290public override DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null) 293return new DataViewRowCursor[] { GetRowCursorCore(columnsNeeded, rand) }; 466private readonly DataViewRowCursor _input; 502public Cursor(IChannelProvider provider, int poolRows, DataViewRowCursor input, Random rand)

Transforms\SkipTakeFilter.cs (5)

211protected override DataViewRowCursor GetRowCursorCore(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 215var input = Source.GetRowCursor(columnsNeeded); 220public override DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null) 223return new DataViewRowCursor[] { GetRowCursorCore(columnsNeeded) }; 238public Cursor(IChannelProvider provider, DataViewRowCursor input, DataViewSchema schema, bool[] active, long skip, long take)

Transforms\TransformBase.cs (10)

65public DataViewRowCursor GetRowCursor(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 78DataViewRowCursor curs; 99protected abstract DataViewRowCursor GetRowCursorCore(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null); 101public abstract DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null); 261/// a <see cref="DataViewSchema"/> or a <see cref="DataViewRowCursor"/>, 734protected override DataViewRowCursor GetRowCursorCore(IEnumerable<DataViewSchema.Column> columnsNeeded, Random rand = null) 742var input = Source.GetRowCursor(inputCols, rand); 746public sealed override DataViewRowCursor[] GetRowCursorSet(IEnumerable<DataViewSchema.Column> columnsNeeded, int n, Random rand = null) 760var cursors = new DataViewRowCursor[inputs.Length]; 853public Cursor(IChannelProvider provider, OneToOneTransformBase parent, DataViewRowCursor input, bool[] active)

Transforms\ValueMapping.cs (5)

463using (var cursor = dataView.GetRowCursor(dataView.Schema[keyColumn.Index], dataView.Schema[valueColumn.Index])) 480using (var cursor = loader.GetRowCursorForAllColumns()) 562using (var cursor = idv.GetRowCursorForAllColumns()) 817public abstract void Train(IHostEnvironment env, DataViewRowCursor cursor); 855public override void Train(IHostEnvironment env, DataViewRowCursor cursor)

Transforms\ValueToKeyMappingTransformer.cs (2)

483using (var cursor = keyData.GetRowCursor(keyData.Schema[0])) 587using (var cursor = trainingData.GetRowCursor(trainingData.Schema.Where(c => toTrain.Contains(c.Index))))

Utilities\ColumnCursor.cs (4)

104using (var cursor = data.GetRowCursor(column)) 122using (var cursor = data.GetRowCursor(column)) 140using (var cursor = data.GetRowCursor(column)) 162using (var cursor = data.GetRowCursor(column))

Utilities\ModelFileUtils.cs (1)

301using (var cursor = loader.GetRowCursorForAllColumns())