fetch
fun fetchNumericColumn(columnName: String, maxRows: Int = 0, removeMissing: Boolean = false): DoubleArray
Obviously, there are memory issues if there are a lot of rows.
Return
the array of values
Parameters
column
the column name to retrieve, must be a numeric column
max
the total number of rows to extract starting at row 1
remove
if true, then missing (NaN values) are removed
fun fetchNumericColumn(columnNum: Int, maxRows: Int = 0, removeMissing: Boolean = false): DoubleArray
Obviously, there are memory issues if there are a lot of rows.
Return
the array of values
Parameters
column
the column number to retrieve, must be between [0,getNumberColumns())
max
the total number of rows to extract starting at row 1
remove
if true, then missing (NaN values) are removed