java.lang.Object
org.apache.poi.ss.formula.functions.Trend
All Implemented Interfaces:
Function

public final class Trend extends Object implements Function
Implementation for the Excel function TREND

Syntax:
TREND(known_y's, known_x's, new_x's, constant)

known_y's, known_x's, new_x'stypically area references, possibly cell references or scalar values
constantTRUE or FALSE: determines whether the regression line should include an intercept term

If known_x's is not given, it is assumed to be the default array {1, 2, 3, ...} of the same size as known_y's.
If new_x's is not given, it is assumed to be the same as known_x's
If constant is omitted, it is assumed to be TRUE

  • Constructor Details

    • Trend

      public Trend()
  • Method Details

    • evaluate

      public ValueEval evaluate(ValueEval[] args, int srcRowIndex, int srcColumnIndex)
      Specified by:
      evaluate in interface Function
      Parameters:
      args - the evaluated function arguments. Empty values are represented with BlankEval or MissingArgEval, never null.
      srcRowIndex - row index of the cell containing the formula under evaluation
      srcColumnIndex - column index of the cell containing the formula under evaluation
      Returns:
      The evaluated result, possibly an ErrorEval, never null. Note - Excel uses the error code #NUM! instead of IEEE NaN, so when numeric functions evaluate to Double.NaN be sure to translate the result to ErrorEval.NUM_ERROR.