edu.wisc.ssec.mcidas
Class GVARnav
java.lang.Object
edu.wisc.ssec.mcidas.AREAnav
edu.wisc.ssec.mcidas.GVARnav
- All Implemented Interfaces:
- java.io.Serializable
public class GVARnav
- extends AREAnav
The GVARnav class creates the ability to navigate GVAR
image data. It is a math copy of the McIDAS nvxgvar.dlm
code.
When used with AreaFile class, set up like this:
AreaFile af;
try {
af = new AreaFile("/home/user/mcidas/data/AREA0001");
} catch (AreaFileException e) {
System.out.println(e);
return;
}
int[] dir;
try { dir=af.getDir();
} catch (AreaFileException e){
System.out.println(e);
return;
}
int[] nav;
try { nav=af.getNav();
} catch (AreaFileException e){
System.out.println(e);
return;
}
try {
GVARnav ng = new GVARnav(nav); // XXXXnav is the specific implementation
} catch (IllegalArgumentException excp) {
System.out.println(excp);
return;
}
ng.setImageStart(dir[5], dir[6]);
ng.setRes(dir[11], dir[12]);
ng.setStart(1,1);
......................
- See Also:
- Serialized Form
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, POES, PS, RADIANS_TO_DEGREES, RADR, RECT, TANC, XY |
Constructor Summary |
GVARnav(int[] iparms)
Set up for the real math work. |
GVARnav(int ifunc,
int[] iparms)
Deprecated. Since ifunc must be 1, replaced with #GVARnav(int[] iparms).
If ifunc != 1, ifunc is set to 1. |
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, equals, getLineOffset, imageCoordToAreaCoord, isFlippedLineCoordinates, makeAreaNav, makeAreaNav, setFlipLineCoordinates, setImageStart, setMag, setMag, setRes, setRes, setStart |
Methods inherited from class java.lang.Object |
clone, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
navTransformOK
public boolean navTransformOK
GVARnav
public GVARnav(int[] iparms)
throws java.lang.IllegalArgumentException
- Set up for the real math work. Must pass in the int array
of the GVAR nav 'codicil'.
- Parameters:
iparms
- the nav block from the image file
- Throws:
java.lang.IllegalArgumentException
- if the nav block is not a GVAR type.
GVARnav
public GVARnav(int ifunc,
int[] iparms)
throws java.lang.IllegalArgumentException
- Deprecated. Since ifunc must be 1, replaced with #GVARnav(int[] iparms).
If ifunc != 1, ifunc is set to 1.
- Set up for the real math work. Must pass in the int array
of the GVAR nav 'codicil'.
- Parameters:
ifunc
- the function to do (always 1 for now)iparms
- the nav block from the image file
- Throws:
java.lang.IllegalArgumentException
- if the nav block is not a GVAR type.
toLatLon
public double[][] toLatLon(double[][] linele)
- converts from satellite coordinates to latitude/longitude
- Specified by:
toLatLon
in class AREAnav
- Parameters:
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.)
- Returns:
- latlon[][] array of lat/lon 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
- Parameters:
latlon[][]
- array of lat/long pairs. Where latlon[indexLat][]
are latitudes and latlon[indexLon][] are longitudes.
- 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);