Exemplo n.º 1
0
            private VBuffer <int> GetKeyLabels <T>(Transposer trans, int labelCol, DataViewType labelColumnType)
            {
                var tmp    = default(VBuffer <T>);
                var labels = default(VBuffer <int>);

                trans.GetSingleSlotValue(labelCol, ref tmp);
                BinKeys <T>(labelColumnType)(in tmp, ref labels);
                VBufferUtils.Densify(ref labels);
                return(labels);
            }
Exemplo n.º 2
0
            private int[] GetKeyLabels <T>(Transposer trans, int labelCol, ColumnType labeColumnType)
            {
                var tmp    = default(VBuffer <T>);
                var labels = default(VBuffer <int>);

                trans.GetSingleSlotValue(labelCol, ref tmp);
                BinKeys <T>(labeColumnType)(ref tmp, ref labels);
                VBufferUtils.Densify(ref labels);
                var values = labels.Values;

                if (labels.Length < values.Length)
                {
                    Array.Resize(ref values, labels.Length);
                }
                return(values);
            }
Exemplo n.º 3
0
            private void GetLabels(Transposer trans, ColumnType labelType, int labelCol)
            {
                int min;
                int lim;
                var labels = default(VBuffer <int>);

                // Note: NAs have their own separate bin.
                if (labelType == NumberType.I4)
                {
                    var tmp = default(VBuffer <DvInt4>);
                    trans.GetSingleSlotValue(labelCol, ref tmp);
                    BinInts(ref tmp, ref labels, _numBins, out min, out lim);
                    _numLabels = lim - min;
                }
                else if (labelType == NumberType.R4)
                {
                    var tmp = default(VBuffer <Single>);
                    trans.GetSingleSlotValue(labelCol, ref tmp);
                    BinSingles(ref tmp, ref labels, _numBins, out min, out lim);
                    _numLabels = lim - min;
                }
                else if (labelType == NumberType.R8)
                {
                    var tmp = default(VBuffer <Double>);
                    trans.GetSingleSlotValue(labelCol, ref tmp);
                    BinDoubles(ref tmp, ref labels, _numBins, out min, out lim);
                    _numLabels = lim - min;
                }
                else if (labelType.IsBool)
                {
                    var tmp = default(VBuffer <DvBool>);
                    trans.GetSingleSlotValue(labelCol, ref tmp);
                    BinBools(ref tmp, ref labels);
                    _numLabels = 3;
                    min        = -1;
                    lim        = 2;
                }
                else
                {
                    Contracts.Assert(0 < labelType.KeyCount && labelType.KeyCount < Utils.ArrayMaxSize);
                    KeyLabelGetter <int> del = GetKeyLabels <int>;
                    var methodInfo           = del.GetMethodInfo().GetGenericMethodDefinition().MakeGenericMethod(labelType.RawType);
                    var parameters           = new object[] { trans, labelCol, labelType };
                    _labels    = (int[])methodInfo.Invoke(this, parameters);
                    _numLabels = labelType.KeyCount + 1;

                    // No need to densify or shift in this case.
                    return;
                }

                // Densify and shift labels.
                VBufferUtils.Densify(ref labels);
                Contracts.Assert(labels.IsDense);
                _labels = labels.Values;
                if (labels.Length < _labels.Length)
                {
                    Array.Resize(ref _labels, labels.Length);
                }
                for (int i = 0; i < _labels.Length; i++)
                {
                    _labels[i] -= min;
                    Contracts.Assert(_labels[i] < _numLabels);
                }
            }
Exemplo n.º 4
0
            private void GetLabels(Transposer trans, DataViewType labelType, int labelCol)
            {
                int min;
                int lim;
                var labels = default(VBuffer <int>);

                // Note: NAs have their own separate bin.
                if (labelType == NumberDataViewType.Int32)
                {
                    var tmp = default(VBuffer <int>);
                    trans.GetSingleSlotValue(labelCol, ref tmp);
                    BinInts(in tmp, ref labels, _numBins, out min, out lim);
                    _numLabels = lim - min;
                }
                else if (labelType == NumberDataViewType.Single)
                {
                    var tmp = default(VBuffer <Single>);
                    trans.GetSingleSlotValue(labelCol, ref tmp);
                    BinSingles(in tmp, ref labels, _numBins, out min, out lim);
                    _numLabels = lim - min;
                }
                else if (labelType == NumberDataViewType.Double)
                {
                    var tmp = default(VBuffer <Double>);
                    trans.GetSingleSlotValue(labelCol, ref tmp);
                    BinDoubles(in tmp, ref labels, _numBins, out min, out lim);
                    _numLabels = lim - min;
                }
                else if (labelType is BooleanDataViewType)
                {
                    var tmp = default(VBuffer <bool>);
                    trans.GetSingleSlotValue(labelCol, ref tmp);
                    BinBools(in tmp, ref labels);
                    _numLabels = 3;
                    min        = -1;
                    lim        = 2;
                }
                else
                {
                    ulong labelKeyCount = labelType.GetKeyCount();
                    Contracts.Assert(labelKeyCount < Utils.ArrayMaxSize);
                    KeyLabelGetter <int> del = GetKeyLabels <int>;
                    var methodInfo           = del.GetMethodInfo().GetGenericMethodDefinition().MakeGenericMethod(labelType.RawType);
                    var parameters           = new object[] { trans, labelCol, labelType };
                    _labels    = (VBuffer <int>)methodInfo.Invoke(this, parameters);
                    _numLabels = labelType.GetKeyCountAsInt32(_host) + 1;

                    // No need to densify or shift in this case.
                    return;
                }

                // Densify and shift labels.
                VBufferUtils.Densify(ref labels);
                Contracts.Assert(labels.IsDense);
                var labelsEditor = VBufferEditor.CreateFromBuffer(ref labels);

                for (int i = 0; i < labels.Length; i++)
                {
                    labelsEditor.Values[i] -= min;
                    Contracts.Assert(labelsEditor.Values[i] < _numLabels);
                }
                _labels = labelsEditor.Commit();
            }