expand
fun expandToRectangular(array2D: Array<DoubleArray>, fillValue: Double = 0.0): Array<DoubleArray>(source)
Copies the supplied 2-D array by expanding to the maximum number of columns for the supplied (ragged) array so that the returned array is rectangular, where all row arrays have the same number of elements (columns).
The expanded elements will be filled with the supplied fill value
Return
the copy
Parameters
array2D
the array to copy
fill
the value to fill if needed, default is 0.0