decodes.tsdb.algo.UsgsEquation Maven / Gradle / Ivy

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A collection of software for aggregatting and processing environmental data such as from NOAA GOES satellites.
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package decodes.tsdb.algo;

import java.util.Date;

import ilex.var.NamedVariableList;
import ilex.var.NamedVariable;
import decodes.tsdb.DbAlgorithmExecutive;
import decodes.tsdb.DbCompException;
import decodes.tsdb.DbIoException;
import decodes.tsdb.VarFlags;

//AW:IMPORTS
// Place an import statements you need here.
//AW:IMPORTS_END

//AW:JAVADOC
/**
Implements the USGS Equation:
output = A * (B + input)^C + D
where A, B, C, and D are constants provided as properties.
Defaults: A=1, B=0, C=1, D=0


 */
//AW:JAVADOC_END
public class UsgsEquation
	extends decodes.tsdb.algo.AW_AlgorithmBase
{
//AW:INPUTS
	public double input;	//AW:TYPECODE=i
	String _inputNames[] = { "input" };
//AW:INPUTS_END

//AW:LOCALVARS
	// Enter any local class variables needed by the algorithm.

//AW:LOCALVARS_END

//AW:OUTPUTS
	public NamedVariable output = new NamedVariable("output", 0);
	String _outputNames[] = { "output" };
//AW:OUTPUTS_END

//AW:PROPERTIES
	public double A = 1;
	public double B = 0;
	public double C = 1;
	public double D = 0;
	String _propertyNames[] = { "A", "B", "C", "D" };
//AW:PROPERTIES_END

	// Allow javac to generate a no-args constructor.

	/**
	 * Algorithm-specific initialization provided by the subclass.
	 */
	protected void initAWAlgorithm( )
		throws DbCompException
	{
//AW:INIT
		_awAlgoType = AWAlgoType.TIME_SLICE;
//AW:INIT_END

//AW:USERINIT
		// Code here will be run once, after the algorithm object is created.
//AW:USERINIT_END
	}
	
	/**
	 * This method is called once before iterating all time slices.
	 */
	protected void beforeTimeSlices()
		throws DbCompException
	{
//AW:BEFORE_TIMESLICES
		// This code will be executed once before each group of time slices.
		// For TimeSlice algorithms this is done once before all slices.
		// For Aggregating algorithms, this is done before each aggregate
		// period.
//AW:BEFORE_TIMESLICES_END
	}

	/**
	 * Do the algorithm for a single time slice.
	 * AW will fill in user-supplied code here.
	 * Base class will set inputs prior to calling this method.
	 * User code should call one of the setOutput methods for a time-slice
	 * output variable.
	 *
	 * @throws DbCompException (or subclass thereof) if execution of this
	 *        algorithm is to be aborted.
	 */
	protected void doAWTimeSlice()
		throws DbCompException
	{
//AW:TIMESLICE
		setOutput(output, A * Math.pow(B + input, C) + D);
//AW:TIMESLICE_END
	}

	/**
	 * This method is called once after iterating all time slices.
	 */
	protected void afterTimeSlices()
		throws DbCompException
	{
//AW:AFTER_TIMESLICES
		// This code will be executed once after each group of time slices.
		// For TimeSlice algorithms this is done once after all slices.
		// For Aggregating algorithms, this is done after each aggregate
		// period.
//AW:AFTER_TIMESLICES_END
	}

	/**
	 * Required method returns a list of all input time series names.
	 */
	public String[] getInputNames()
	{
		return _inputNames;
	}

	/**
	 * Required method returns a list of all output time series names.
	 */
	public String[] getOutputNames()
	{
		return _outputNames;
	}

	/**
	 * Required method returns a list of properties that have meaning to
	 * this algorithm.
	 */
	public String[] getPropertyNames()
	{
		return _propertyNames;
	}
}