Package ucar.nc2.grib

Class QuasiRegular

java.lang.Object

ucar.nc2.grib.QuasiRegular

public class QuasiRegular
extends Object

Converts a QuasiRegular grid into a regular rectanglar (lat/lon) grid.

Since:

9/10/11

See Also:

"http://lost-contact.mit.edu/afs/eos.ncsu.edu/service/pams/meteorology/nawips/unidata/ldmbridge/dcgrib2/qlin.c"

Constructor Summary

Constructors

Constructor	Description
QuasiRegular()

Method Summary

Modifier and Type	Method	Description
static float[]	convertQuasiGrid(float[] quasi, int[] linePts, int nx, int ny, GribData.InterpolationMethod interpolationMethod)
static void	cubicSpline(float[] inpt, int iIdx, double[] y2d, double x, float[] outpt, int oIdx)
static int	getMax(int[] vals)
static void	linear(float[] inpt, int iIdx, double x, float[] outpt, int oIdx, int npoints)
static void	secondDerivative(float[] inpt, int idx, int n, double x1d, double xnd, double[] y2d)

Methods inherited from class java.lang.Object

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

Constructor Detail

QuasiRegular

public QuasiRegular()

Method Detail

convertQuasiGrid

public static float[] convertQuasiGrid(float[] quasi,
                                       int[] linePts,
                                       int nx,
                                       int ny,
                                       GribData.InterpolationMethod interpolationMethod)

Parameters:

quasi - input data

linePts - npts in each line

nx - num parellels or undefined

ny - num parellels or undefined

Returns:

regular grid

getMax

public static int getMax(int[] vals)

secondDerivative

public static void secondDerivative(float[] inpt,
                                    int idx,
                                    int n,
                                    double x1d,
                                    double xnd,
                                    double[] y2d)

cubicSpline

public static void cubicSpline(float[] inpt,
                               int iIdx,
                               double[] y2d,
                               double x,
                               float[] outpt,
                               int oIdx)

linear

public static void linear(float[] inpt,
                          int iIdx,
                          double x,
                          float[] outpt,
                          int oIdx,
                          int npoints)