edu.wisc.ssec.mcidas
Class RECTnav

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

All Implemented Interfaces:

Serializable

public final class RECTnav

extends AREAnav

Navigation class for Radar (RECT) type nav. This code was modified from the original FORTRAN code (nvxrect.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	itype
(package private) int	iwest
(package private) double	xcol
(package private) double	xedif
(package private) double	xele
(package private) double	xlat
(package private) double	xldif
(package private) double	xlin
(package private) double	xlon
(package private) double	xrow
(package private) double	zdlat
(package private) double	zdlon
(package private) double	zslat
(package private) double	zslon

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

RECTnav(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

itype

int itype

iwest

int iwest

xrow

double xrow

xcol

double xcol

zslat

double zslat

zslon

double zslon

zdlat

double zdlat

zdlon

double zdlon

xlin

double xlin

xele

double xele

xldif

double xldif

xedif

double xedif

xlat

double xlat

xlon

double xlon

Constructor Detail

RECTnav

public RECTnav(int[] iparms)
        throws IllegalArgumentException

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

Parameters:

iparms - the nav block from the image file

Throws:

IllegalArgumentException - if the nav block is not a RECT 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 linele[indexLine][] is a line and linele[indexEle][] is an element. These are in 'file' coordinates (not "image" coordinates);