edu.psu.geovista.app.spreadsheet.functions
Class FunctionAverage

java.lang.Object
  edu.psu.geovista.app.spreadsheet.functions.Function
      edu.psu.geovista.app.spreadsheet.functions.FunctionAverage

public class FunctionAverage

extends Function

Field Summary

Fields inherited from class edu.psu.geovista.app.spreadsheet.functions.Function

owner

Constructor Summary

FunctionAverage()

Method Summary

java.lang.Number	evaluate(Node node) This should be implemented in each function.
java.lang.String	getDescription() Return the description of the function
java.lang.String	getUsage() Return the usage of the function

Methods inherited from class edu.psu.geovista.app.spreadsheet.functions.Function

checkParamsExist, getFirst, getOwner, getRangeArea, getSingleParameter, getSupportFuntion, isRange, processColonNode, requireParams, setOwner

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FunctionAverage

public FunctionAverage()

Method Detail

evaluate

public java.lang.Number evaluate(Node node)
                          throws ParserException,
                                 NoReferenceException

Description copied from class: Function

This should be implemented in each function.

Specified by:

evaluate in class Function

Parameters:

node - the function node starting with the funciton name with a chain of parameters

Throws:

ParserException

NoReferenceException

getUsage

public java.lang.String getUsage()

Description copied from class: Function

Return the usage of the function

Specified by:

getUsage in class Function

getDescription

public java.lang.String getDescription()

Description copied from class: Function

Return the description of the function

Specified by:

getDescription in class Function