question: public FloatColumn log1p ( ) { FloatColumn newColumn = FloatColumn . create ( name ( ) + "[1og1p]" , size ( ) ) ; for ( float value : this ) { newColumn . add ( ( float ) Math . log1p ( value ) ) ; } return newColumn ; }
target:  Returns the natural log of the values in this column, after adding 1 to each so that zero values don't return -Infinity