Package noaa.coastwatch.io

Class NOAA1bReader.LongitudeInterpolator

java.lang.Object

noaa.coastwatch.util.Function

noaa.coastwatch.io.NOAA1bReader.LongitudeInterpolator

All Implemented Interfaces:

Encodable

Enclosing class:

NOAA1bReader

public static class NOAA1bReader.LongitudeInterpolator
extends Function

The LongitudeInterpolator class performs longitude interpolation using polar coordinates. This helps to avoid problems with longitude interpolation near the poles where simple Lagrangian interpolation along the scan line causes interpolation anomalies.

Constructor Summary

Constructors

Constructor	Description
LongitudeInterpolator(int[] sampleIndex, float[] latData, float[] lonData)	Creates a new interpolator.

Method Summary

Modifier and Type	Method	Description
double	evaluate(double[] variables)	Evalutes a function value with the specified inputs.

Methods inherited from class noaa.coastwatch.util.Function

getEncoding, useEncoding

Methods inherited from class java.lang.Object

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

Constructor Details

LongitudeInterpolator

public LongitudeInterpolator(int[] sampleIndex,
 float[] latData,
 float[] lonData)

Creates a new interpolator.

Parameters:

sampleIndex - the array of sample indices.

latData - the array of latitude data.

lonData - the array of longitude data.

Method Details

evaluate

public double evaluate(double[] variables)

Description copied from class: Function

Evalutes a function value with the specified inputs.

Specified by:

evaluate in class Function

Parameters:

variables - the array of input variable values.

Returns:

the evaluated function value. If an error occurred during evaluation, the return value is Double.NaN.