org.agmip.functions

Class WeatherHelper

java.lang.Object

org.agmip.functions.WeatherHelper

public class WeatherHelper
extends Object

Provide static functions for weather data handling

Author:

Meng zhang

Constructor Summary

Constructors

Constructor and Description
WeatherHelper()

Method Summary

Methods

Modifier and Type	Method and Description
protected static ArrayList	getDailyData(HashMap data) Get weather daily data array from data holder.
static HashMap<String,ArrayList<String>>	getEto(HashMap data) Calculate the reference evapotranspiration (ETo) by means of the FAO-Penman Monteith equation.
static HashMap<String,String>	getTavAndAmp(HashMap data) Calculate the AMP (annual amplitude of mean monthly temperature oC) and TAV (Annual average ambient temperature oC)
protected static HashMap	getWthData(HashMap data) Get weather station data set from data holder.

Methods inherited from class java.lang.Object

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

Constructor Detail

WeatherHelper

public WeatherHelper()

Method Detail

getTavAndAmp

public static HashMap<String,String> getTavAndAmp(HashMap data)

Calculate the AMP (annual amplitude of mean monthly temperature oC) and TAV (Annual average ambient temperature oC)

Parameters:

data - The data map

Returns:

A HashMap contains TAV and TAMP, the key is their ICASA variable name

getDailyData

protected static ArrayList getDailyData(HashMap data)

Get weather daily data array from data holder.

Parameters:

data - The experiment data holder

Returns:

The weather daily data array

getWthData

protected static HashMap getWthData(HashMap data)

Get weather station data set from data holder.

Parameters:

data - The experiment data holder

Returns:

The weather station data set

getEto

public static HashMap<String,ArrayList<String>> getEto(HashMap data)

Calculate the reference evapotranspiration (ETo) by means of the FAO-Penman Monteith equation.

Parameters:

data - The data map

Returns:

An ArrayList of ETo for daily weather record.