edu.wisc.ssec.mcidas
Class LALOnav

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

All Implemented Interfaces:

Serializable

public final class LALOnav

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	aux_size
(package private) int	cols
(package private) int	count
(package private) boolean	debug
(package private) Gridded2DSet	gs
(package private) int	lat_aux_offset
(package private) float	LAT_MISSING
(package private) float[]	latData
(package private) int	latpoint
(package private) int	latres
(package private) int	lon_aux_offset
(package private) float	LON_MISSING
(package private) float[]	lonData
(package private) int	lonpoint
(package private) int	lonres
(package private) int	lrele
(package private) int	lrlin
(package private) double	maxlat
(package private) double	maxlon
(package private) double	minlat
(package private) double	minlon
(package private) int	numPoints
(package private) boolean	Pos
(package private) int	rows
(package private) int	ulelem
(package private) int	ulline

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

LALOnav(int[] iparms, int[] auxBlock)
Set up for the real math work.

Method Summary

double[][]	toLatLon(double[][] linele) converts from satellite coordinates to latitude/longitude
float[][]	toLatLon(float[][] linele) converts from satellite coordinates to latitude/longitude
double[][]	toLinEle(double[][] latlon) toLinEle converts lat/long to satellite line/element
float[][]	toLinEle(float[][] latlon) transform an array of values in R^DomainDimension to an array of non-integer grid coordinates

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, toString

Methods inherited from class java.lang.Object

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

Field Detail

rows

int rows

cols

int cols

latres

int latres

lonres

int lonres

latpoint

int latpoint

lonpoint

int lonpoint

numPoints

int numPoints

ulline

int ulline

ulelem

int ulelem

aux_size

int aux_size

lat_aux_offset

int lat_aux_offset

lon_aux_offset

int lon_aux_offset

lrlin

int lrlin

lrele

int lrele

minlat

double minlat

maxlat

double maxlat

minlon

double minlon

maxlon

double maxlon

latData

float[] latData

lonData

float[] lonData

LAT_MISSING

float LAT_MISSING

LON_MISSING

float LON_MISSING

debug

boolean debug

count

int count

gs

Gridded2DSet gs

Pos

boolean Pos

Constructor Detail

LALOnav

public LALOnav(int[] iparms,
               int[] auxBlock)
        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 float[][] toLatLon(float[][] linele)

converts from satellite coordinates to latitude/longitude

Overrides:

toLatLon in class AREAnav

Returns:

latlon[][] array of lat/long pairs. Output array is latlon[indexLat][] of latitudes and latlon[indexLon][] of longitudes. this code cobbled from McIDAS laloutil.c

toLatLon

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

Description copied from class: AREAnav

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 float[][] toLinEle(float[][] latlon)

transform an array of values in R^DomainDimension to an array of non-integer grid coordinates

Overrides:

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);

toLinEle

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

Description copied from class: AREAnav

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);