Package tech.tablesaw.columns.numbers

Interface NumberMapFunctions

All Known Subinterfaces:
NumericColumn<T>
All Known Implementing Classes:
DoubleColumn, FloatColumn, IntColumn, LongColumn, NumberColumn, ShortColumn
public interface NumberMapFunctions

  • Method Details

    • normalize

      default DoubleColumn normalize()
      Returns a transformation of the data in this column such that the result has a mean of 0, and a standard deviation of 1

    • name

      String name()

    • size

      int size()

    • isEmpty

      boolean isEmpty()

    • asDoubleArray

      double[] asDoubleArray()

    • asRatio

      default DoubleColumn asRatio()
      Return the elements of this column as the ratios of their value and the sum of all elements

    • sum

      double sum()

    • asPercent

      default DoubleColumn asPercent()
      Return the elements of this column as the percentages of their value relative to the sum of all elements

    • subtract

      default DoubleColumn subtract(NumericColumn<?> column2)

    • add

      default DoubleColumn add(NumericColumn<?> column2)

    • multiply

      default DoubleColumn multiply(NumericColumn<?> column2)

    • divide

      default DoubleColumn divide(NumericColumn<?> column2)

    • add

      default DoubleColumn add(Number value)

    • subtract

      default DoubleColumn subtract(Number value)

    • divide

      default DoubleColumn divide(Number value)

    • multiply

      default DoubleColumn multiply(Number value)

    • add

      default double add(double val1, double val2)

    • multiply

      default double multiply(double val1, double val2)

    • divide

      default double divide(double val1, double val2)

    • subtract

      default double subtract(double val1, double val2)
      Returns the result of subtracting val2 from val1, after handling missing values

    • power

      default DoubleColumn power(double power)
      Returns a NumberColumn with the exponential power of each value in this column

    • power

      default DoubleColumn power(NumericColumn<?> powerColumn)

    • reciprocal

      default DoubleColumn reciprocal()
      Returns a NumberColumn with the reciprocal (1/n) for each value n in this column

    • square

      default DoubleColumn square()
      Returns a NumberColumn with the square of each value in this column

    • sqrt

      default DoubleColumn sqrt()

    • cubeRoot

      default DoubleColumn cubeRoot()

    • cube

      default DoubleColumn cube()

    • remainder

      default DoubleColumn remainder(DoubleColumn column2)

    • remainder

      default DoubleColumn remainder(double val2)

    • logN

      default DoubleColumn logN()
      Returns the natural log of the values in this column as a NumberColumn.

    • log10

      default DoubleColumn log10()
      Returns the base 10 log of the values in this column as a NumberColumn.

    • log1p

      default DoubleColumn log1p()
      Returns the natural log of the values in this column, after adding 1 to each so that zero values don't return -Infinity

    • round

      default DoubleColumn round()

    • roundInt

      default DoubleColumn roundInt()
      Returns the rounded values as a NumberColumn. Use roundLong() if larger
      Throws:
      ClassCastException - if the returned value will not fit in an int

    • abs

      default DoubleColumn abs()
      Returns a NumberColumn with the absolute value of each value in this column

    • neg

      default DoubleColumn neg()
      For each item in the column, returns the same number with the sign changed. For example: -1.3 returns 1.3, 2.135 returns -2.135 0 returns 0

    • difference

      default DoubleColumn difference()

    • cumSum

      default DoubleColumn cumSum()
      Returns a new column with a cumulative sum calculated

    • cumProd

      default DoubleColumn cumProd()
      Returns a new column with a cumulative product calculated

    • cumMax

      default DoubleColumn cumMax()
      Returns a new column with a cumulative maximum calculated

    • cumMin

      default DoubleColumn cumMin()
      Returns a new column with a cumulative maximum calculated

    • pctChange

      default DoubleColumn pctChange()
      Returns a new column with a percent change calculated

    • bin

      default DoubleColumn bin(int binCount)

    • getDouble

      double getDouble(int i)

    • isMissing

      boolean isMissing(int rowNumber)