edu.wisc.ssec.mcidas
Class LAMBnav

java.lang.Object
  edu.wisc.ssec.mcidas.AREAnav
      edu.wisc.ssec.mcidas.LAMBnav

All Implemented Interfaces:

Serializable

public final class LAMBnav

extends AREAnav

Navigation class for Lambert Conformal (LAMB) type nav. This code was modified from the original FORTRAN code (nvxlamb.dlm) on the McIDAS system. It only supports latitude/longitude to line/element transformations (LL) and vice/versa. Transform to 'XYZ' not implemented.

See Also:

McIDAS Programmer's Manual, Serialized Form

Field Summary

(package private) int	ihem
(package private) int	iwest
(package private) double	xblat
(package private) double	xcol
(package private) double	xfac
(package private) double	xlat1
(package private) double	xlat2
(package private) double	xpole
(package private) double	xqlon
(package private) double	xrow
(package private) double	xspace

Fields inherited from class edu.wisc.ssec.mcidas.AREAnav

DEGREES_TO_RADIANS, DMSP, GMSX, GOES, GVAR, indexEle, indexLat, indexLine, indexLon, LALO, LAMB, LL, MERC, MOLL, MSAT, MSG, MSGT, POES, PS, RADIANS_TO_DEGREES, RADR, RECT, serialVersionUID, TANC, XY

Constructor Summary

LAMBnav(int[] iparms)
Set up for the real math work.

Method Summary

double[][]	toLatLon(double[][] linele) converts from satellite coordinates to latitude/longitude
double[][]	toLinEle(double[][] latlon) toLinEle converts lat/long to satellite line/element

Methods inherited from class edu.wisc.ssec.mcidas.AREAnav

areaCoordToImageCoord, areaCoordToImageCoord, areaCoordToImageCoord, areaCoordToImageCoord, doubleToFloat, equals, floatToDouble, getLineOffset, imageCoordToAreaCoord, imageCoordToAreaCoord, imageCoordToAreaCoord, imageCoordToAreaCoord, isFlippedLineCoordinates, makeAreaNav, makeAreaNav, setFlipLineCoordinates, setImageStart, setMag, setMag, setRes, setRes, setStart, toLatLon, toLinEle, toString

Methods inherited from class java.lang.Object

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

Field Detail

iwest

int iwest

ihem

int ihem

xrow

double xrow

xcol

double xcol

xlat1

double xlat1

xlat2

double xlat2

xspace

double xspace

xqlon

double xqlon

xblat

double xblat

xfac

double xfac

xpole

double xpole

Constructor Detail

LAMBnav

public LAMBnav(int[] iparms)
        throws IllegalArgumentException

Set up for the real math work. Must pass in the int array of the LAMB nav 'codicil'.

Parameters:

iparms - the nav block from the image file

Throws:

IllegalArgumentException - if the nav block is not a LAMB type.

Method Detail

toLatLon

public double[][] toLatLon(double[][] linele)

converts from satellite coordinates to latitude/longitude

Specified by:

toLatLon in class AREAnav

Returns:

latlon[][] array of lat/long pairs. Output array is latlon[indexLat][] of latitudes and latlon[indexLon][] of longitudes.

toLinEle

public double[][] toLinEle(double[][] latlon)

toLinEle converts lat/long to satellite line/element

Specified by:

toLinEle in class AREAnav

Returns:

linele[][] array of line/element pairs. Where is an element. These are in 'file' coordinates (not "image" coordinates);