## Uses of Class
org.apache.sysds.runtime.compress.readers.ReaderColumnSelection

Packages that use ReaderColumnSelection
org.apache.sysds.runtime.compress.readers

### Uses of ReaderColumnSelection in org.apache.sysds.runtime.compress.readers

Subclasses of ReaderColumnSelection in org.apache.sysds.runtime.compress.readers
`class` `ReaderColumnSelectionDenseMultiBlock`
`class` `ReaderColumnSelectionDenseMultiBlockTransposed`
`class` `ReaderColumnSelectionDenseSingleBlock`
`class` `ReaderColumnSelectionDenseSingleBlockTransposed`
`class` `ReaderColumnSelectionSparse` Used to extract the values at certain indexes from each row in a sparse matrix Keeps returning all-zeros arrays until reaching the last possible index.
`class` `ReaderColumnSelectionSparseTransposed` Used to extract the values at certain indexes from each row in a sparse matrix Keeps returning all-zeros arrays until reaching the last possible index.

Methods in org.apache.sysds.runtime.compress.readers that return ReaderColumnSelection
`static ReaderColumnSelection` ReaderColumnSelection.`createReader​(MatrixBlock rawBlock, int[] colIndices, boolean transposed)`
`static ReaderColumnSelection` ReaderColumnSelection.`createReader​(MatrixBlock rawBlock, int[] colIndices, boolean transposed, int rl, int ru)`