has init initSeq initSeq read readAllNames readBufferRowCount readColumnCount readIndex readIndices readInfo readName readRowCount readSegment readSegmentSeq readSegmentSeq readSegmentSeqTo readSegmentSeqTo readSegmentSeqTo readSegmentSeqTo readSegmentTo readSegmentTo readSeq readSeq readSeqTo readSeqTo readSeqTo readSeqTo readTo readTo remove removeSeq rename write writeSegment writeSegmentSeq writeSegmentSeq writeSeq writeSeq

readSegment() VecColumn< T, N > readSegment ( const Segment &  rows, ColumnKey  key  ) const Read the segment of a column specified by its name or index. Parameters rows The included lower and upper bounds of the row indices to be read key The name or 0-based index of the column to be read column The preexisting Column to be filled Methods to read column segments are similar to methods to read complete columns (see read()). They accept an additional parameter to specify the rows to be read, as the bounds of a closed interval. Example usages: // Create a new Column auto segment = columns.readSegment<float>({10, 50}, "NAME"); // Read into an existing Column // This is a more complex example which demonstrates the use of offsets Segment sourceBounds = {10, 50}; long destinationRow = 20; std::vector<float> values(100); PtrColumn<float> segment({"NAME", "m/s", 1}, 20, &values[destinationRow]); columns.readSegmentTo(sourceBounds, "NAME", segment); See also read()