/**
* Convert a LatLonPoint to projection coordinates
*
* @param latLon convert from these lat, lon coordinates
* @param result the object to write to
* @return the given result
*/
public ProjectionPoint latLonToProj(LatLonPoint latLon, ProjectionPointImpl result) {
double toX, toY;
double fromLat = latLon.getLatitude();
double fromLon = latLon.getLongitude();
double fromLat_r = Math.toRadians(fromLat);
// infinite projection
if ((Math.abs(90.0 - Math.abs(fromLat))) < TOLERANCE) {
toX = Double.POSITIVE_INFINITY;
toY = Double.POSITIVE_INFINITY;
} else {
toX = A * Math.toRadians(LatLonPointImpl.range180(fromLon - this.lon0));
toY = A * SpecialMathFunction.atanh(Math.sin(fromLat_r)); // p 41 Snyder
}
result.setLocation(toX + falseEasting, toY + falseNorthing);
return result;
}
/**
* Convert a LatLonPoint to projection coordinates
*
* @param latLon convert from these lat, lon coordinates
* @param result the object to write to
* @return the given result
*/
public ProjectionPoint latLonToProj(LatLonPoint latLon, ProjectionPointImpl result) {
double toX, toY;
double fromLat = latLon.getLatitude();
double fromLon = latLon.getLongitude();
fromLat = Math.toRadians(fromLat);
double lonDiff = Math.toRadians(LatLonPointImpl.lonNormal(fromLon - lon0Degrees));
double cosc = sinLat0 * Math.sin(fromLat) + cosLat0 * Math.cos(fromLat) * Math.cos(lonDiff);
if (cosc >= 0) {
toX = R * Math.cos(fromLat) * Math.sin(lonDiff);
toY = R * (cosLat0 * Math.sin(fromLat) - sinLat0 * Math.cos(fromLat) * Math.cos(lonDiff));
} else {
toX = Double.POSITIVE_INFINITY;
toY = Double.POSITIVE_INFINITY;
}
result.setLocation(toX, toY);
return result;
}
/** Converts a 3D variable to a {@link Metadata} representation */
private static void convert3DVariable(GridDatatype g, Date date, Map<String, Metadata> metaMap)
throws IOException {
Variable v = g.getVariable();
System.out.println("Reading: " + v.getFullName());
Array values = v.read();
int h = v.getShape(1);
int w = v.getShape(2);
for (int i = 0; i < h; ++i) {
for (int j = 0; j < w; ++j) {
LatLonPoint pt = g.getCoordinateSystem().getLatLon(j, i);
String hash =
GeoHash.encode((float) pt.getLatitude(), (float) pt.getLongitude(), 10).toLowerCase();
Metadata meta = metaMap.get(hash);
if (meta == null) {
/* We need to create Metadata for this location */
meta = new Metadata();
UUID metaUUID = UUID.nameUUIDFromBytes(hash.getBytes());
meta.setName(metaUUID.toString());
SpatialProperties location =
new SpatialProperties((float) pt.getLatitude(), (float) pt.getLongitude());
meta.setSpatialProperties(location);
TemporalProperties time = new TemporalProperties(date.getTime());
meta.setTemporalProperties(time);
metaMap.put(hash, meta);
}
String featureName = v.getFullName().toLowerCase();
float featureValue = values.getFloat(i * w + j);
Feature feature = new Feature(featureName, featureValue);
meta.putAttribute(feature);
}
}
}
private static void makeSelectBB(StringBuffer sbuff, LatLonRect bb) {
// LAT min max;LON min max
// For ADDE URL's, lon is positive east, on the server, lon is positive west.
// AddeURLConnection handles the conversion.
// Format for lat/lon is either decimal degrees or DD:MM:SS
LatLonPoint ll = bb.getLowerLeftPoint();
LatLonPoint ur = bb.getUpperRightPoint();
sbuff.append("LAT ");
sbuff.append(ll.getLatitude());
sbuff.append(" ");
sbuff.append(ur.getLatitude());
sbuff.append(";LON ");
sbuff.append(ll.getLongitude());
sbuff.append(" ");
sbuff.append(ur.getLongitude());
}
protected Element genLonLatEnvelope(GridCoordSystem gcs) {
// <CoverageOfferingBrief>/lonLatEnvelope
Element lonLatEnvelopeElem = new Element("lonLatEnvelope", wcsNS);
lonLatEnvelopeElem.setAttribute("srsName", "urn:ogc:def:crs:OGC:1.3:CRS84");
LatLonRect llbb = gcs.getLatLonBoundingBox();
LatLonPoint llpt = llbb.getLowerLeftPoint();
LatLonPoint urpt = llbb.getUpperRightPoint();
// <CoverageOfferingBrief>/lonLatEnvelope/gml:pos
String firstPosition = llpt.getLongitude() + " " + llpt.getLatitude();
double lon = llpt.getLongitude() + llbb.getWidth();
String secondPosition = lon + " " + urpt.getLatitude();
// ToDo WCS 1.0Plus - Deal with conversion to meters. (Yikes!!)
CoordinateAxis1D vertAxis = gcs.getVerticalAxis();
if (vertAxis != null) {
// See verAxis.getUnitsString()
double zeroIndexValue = vertAxis.getCoordValue(0);
double sizeIndexValue = vertAxis.getCoordValue(((int) vertAxis.getSize()) - 1);
if (vertAxis.getPositive().equals(ucar.nc2.constants.CF.POSITIVE_UP)) {
firstPosition += " " + zeroIndexValue;
secondPosition += " " + sizeIndexValue;
} else {
firstPosition += " " + sizeIndexValue;
secondPosition += " " + zeroIndexValue;
}
}
lonLatEnvelopeElem.addContent(new Element("pos", gmlNS).addContent(firstPosition));
lonLatEnvelopeElem.addContent(new Element("pos", gmlNS).addContent(secondPosition));
// <CoverageOfferingBrief>/lonLatEnvelope/gml:timePostion [2]
if (gcs.hasTimeAxis()) {
lonLatEnvelopeElem.addContent(
new Element("timePosition", gmlNS)
.addContent(gcs.getCalendarDateRange().getStart().toString()));
lonLatEnvelopeElem.addContent(
new Element("timePosition", gmlNS)
.addContent(gcs.getCalendarDateRange().getEnd().toString()));
}
return lonLatEnvelopeElem;
}
protected Element genLonLatEnvelope(GridCoordSystem gcs) {
// <CoverageOfferingBrief>/lonLatEnvelope
Element lonLatEnvelopeElem = new Element("lonLatEnvelope", wcsNS);
lonLatEnvelopeElem.setAttribute("srsName", "urn:ogc:def:crs:OGC:1.3:CRS84");
LatLonRect llbb = gcs.getLatLonBoundingBox();
LatLonPoint llpt = llbb.getLowerLeftPoint();
LatLonPoint urpt = llbb.getUpperRightPoint();
// <CoverageOfferingBrief>/lonLatEnvelope/gml:pos
String firstPosition = llpt.getLongitude() + " " + llpt.getLatitude();
double lon = llpt.getLongitude() + llbb.getWidth();
String secondPosition = lon + " " + urpt.getLatitude();
// ToDo WCS 1.0Plus - Add vertical (Deal with conversion to meters. Yikes!!)
// CoordinateAxis1D vertAxis = gcs.getVerticalAxis();
// if ( vertAxis != null )
// {
// // See verAxis.getUnitsString()
// firstPosition += " " + vertAxis.getCoordValue( 0);
// secondPostion += " " + vertAxis.getCoordValue( ((int)vertAxis.getSize()) - 1);
// }
lonLatEnvelopeElem.addContent(new Element("pos", gmlNS).addContent(firstPosition));
lonLatEnvelopeElem.addContent(new Element("pos", gmlNS).addContent(secondPosition));
// <CoverageOfferingBrief>/lonLatEnvelope/gml:timePostion [2]
if (gcs.hasTimeAxis()) {
DateRange dr = gcs.getDateRange();
if (dr != null) {
lonLatEnvelopeElem.addContent(
new Element("timePosition", gmlNS).addContent(dr.getStart().toDateTimeStringISO()));
lonLatEnvelopeElem.addContent(
new Element("timePosition", gmlNS).addContent(dr.getEnd().toDateTimeStringISO()));
}
}
return lonLatEnvelopeElem;
}
void timeProjection(ProjectionImpl proj) {
java.util.Random r = new java.util.Random((long) this.hashCode());
LatLonPointImpl startL = new LatLonPointImpl();
double[][] from = new double[2][NPTS];
for (int i = 0; i < NPTS; i++) {
from[0][i] = (180.0 * (r.nextDouble() - .5)); // random latlon point
from[1][i] = (360.0 * (r.nextDouble() - .5)); // random latlon point
}
int n = REPEAT * NPTS;
// double[][] result = new double[2][NTRIALS];
// normal
long t1 = System.currentTimeMillis();
for (int k = 0; k < REPEAT; k++) {
for (int i = 0; i < NPTS; i++) {
ProjectionPoint p = proj.latLonToProj(from[0][i], from[1][i]);
LatLonPoint endL = proj.projToLatLon(p);
if (checkit) {
assert close(from[0][i], endL.getLatitude())
: "lat: " + from[0][i] + "!=" + endL.getLatitude();
assert close(from[1][i], endL.getLongitude())
: "lon: " + from[1][i] + "!=" + endL.getLongitude();
}
}
}
long took = System.currentTimeMillis() - t1;
sumNormal += took;
System.out.println(
n
+ " normal "
+ proj.getClassName()
+ " took "
+ took
+ " msecs "); // == "+ .001*took/NTRIALS+" secs/call ");
// array
long t2 = System.currentTimeMillis();
for (int k = 0; k < REPEAT; k++) {
double[][] to = proj.latLonToProj(from);
double[][] result2 = proj.projToLatLon(to);
if (checkit) {
for (int i = 0; i < NPTS; i++) {
assert close(from[0][i], result2[0][i]) : "lat: " + from[0][i] + "!=" + result2[0][i];
assert close(from[1][i], result2[1][i]) : "lon: " + from[1][i] + "!=" + result2[1][i];
}
}
}
took = System.currentTimeMillis() - t2;
sumArray += took;
System.out.println(
n
+ " array "
+ proj.getClassName()
+ " took "
+ took
+ " msecs "); // == "+ .001*took/NTRIALS+" secs/call ");
// System.out.println(NTRIALS + " array "+ proj.getClassName()+" took "+took+ " msecs == "+
// .001*took/NTRIALS/REPEAT+" secs/call ");
}
@Test
public void bugReport() throws IOException {
try (GridDataset dataset =
GridDataset.open(
"http://www.unidata.ucar.edu/software/netcdf/examples/sresa1b_ncar_ccsm3_0_run1_200001.nc")) {
GridDatatype firstGridInfo = dataset.getGrids().get(0);
System.out.println("Grid name =" + firstGridInfo.getName());
GeoGrid firstGrid = (GeoGrid) dataset.getGrids().get(0);
System.out.println("WHOLE GRID");
GridCoordSystem gcs = firstGrid.getCoordinateSystem();
System.out.println("is lat/lon system ? " + gcs.isLatLon());
assert gcs.isLatLon();
LatLonRect rect = gcs.getLatLonBoundingBox();
System.out.println(
"gcs bounding box : latmin="
+ rect.getLatMin()
+ " latmax="
+ rect.getLatMax()
+ " lonmin="
+ rect.getLonMin()
+ " lonmax="
+ rect.getLonMax());
System.out.println("projection : " + gcs.getProjection());
System.out.println(
"width =" + gcs.getXHorizAxis().getSize() + ", height=" + gcs.getYHorizAxis().getSize());
System.out.println(
"X is regular ? " + ((CoordinateAxis1D) gcs.getXHorizAxis()).isRegular());
System.out.println("X is contiguous ? " + gcs.getXHorizAxis().isContiguous());
System.out.println(
"X start : " + ((CoordinateAxis1D) gcs.getXHorizAxis()).getStart());
System.out.println(
"X increment : " + ((CoordinateAxis1D) gcs.getXHorizAxis()).getIncrement());
System.out.println(
"Y is regular ? " + ((CoordinateAxis1D) gcs.getYHorizAxis()).isRegular());
System.out.println("Y is contiguous ? " + gcs.getYHorizAxis().isContiguous());
System.out.println(
"Y start : " + ((CoordinateAxis1D) gcs.getYHorizAxis()).getStart());
System.out.println(
"Y increment : " + ((CoordinateAxis1D) gcs.getYHorizAxis()).getIncrement());
LatLonPoint p = gcs.getLatLon(0, 0);
System.out.println("index (0,0) --> lat/lon : " + p.getLatitude() + " ; " + p.getLongitude());
p = gcs.getLatLon(1, 1);
System.out.println("index (1,1) --> lat/lon : " + p.getLatitude() + " ; " + p.getLongitude());
System.out.println("looking up lat=" + p.getLatitude() + " lon=" + p.getLongitude());
int[] xy = gcs.findXYindexFromLatLon(p.getLatitude(), p.getLongitude(), null);
System.out.println("index= (" + xy[0] + ", " + xy[1] + ")");
Assert.assertEquals(xy[0], 1);
Assert.assertEquals(xy[1], 1);
// --------------------------------------------------------------------------
double latMin = -20.D, latMax = -10.D, lonMin = 35.D, lonMax = 45.D;
System.out.println(
"\nSUBGRID (latmin="
+ latMin
+ " latmax="
+ latMax
+ " lonmin="
+ lonMin
+ " lonmax="
+ lonMax
+ ")");
LatLonRect latLonRect =
new LatLonRect(new LatLonPointImpl(latMin, lonMin), new LatLonPointImpl(latMax, lonMax));
GeoGrid gridSubset = firstGrid.subset(null, null, latLonRect, 0, 1, 1);
GridCoordSystem gcs2 = gridSubset.getCoordinateSystem();
rect = gcs2.getLatLonBoundingBox();
System.out.println("is lat/lon system ? " + gcs2.isLatLon());
System.out.println(
"gcs bounding box : latmin="
+ rect.getLatMin()
+ " latmax="
+ rect.getLatMax()
+ " lonmin="
+ rect.getLonMin()
+ " lonmax="
+ rect.getLonMax());
System.out.println("projection : " + gcs.getProjection());
System.out.println(
"width ="
+ gcs2.getXHorizAxis().getSize()
+ ", height="
+ gcs2.getYHorizAxis().getSize());
System.out.println(
"X is regular ? " + ((CoordinateAxis1D) gcs2.getXHorizAxis()).isRegular());
System.out.println("X is contiguous ? " + gcs2.getXHorizAxis().isContiguous());
System.out.println(
"X start : " + ((CoordinateAxis1D) gcs2.getXHorizAxis()).getStart());
System.out.println(
"X increment : " + ((CoordinateAxis1D) gcs2.getXHorizAxis()).getIncrement());
System.out.println(
"Y is regular ? " + ((CoordinateAxis1D) gcs2.getYHorizAxis()).isRegular());
System.out.println("Y is contiguous ? " + gcs2.getYHorizAxis().isContiguous());
System.out.println(
"Y start : " + ((CoordinateAxis1D) gcs2.getYHorizAxis()).getStart());
System.out.println(
"Y increment : " + ((CoordinateAxis1D) gcs2.getYHorizAxis()).getIncrement());
p = gcs2.getLatLon(0, 0);
System.out.println("index (0,0) --> lat/lon : " + p.getLatitude() + " ; " + p.getLongitude());
p = gcs2.getLatLon(1, 1);
System.out.println("index (1,1) --> lat/lon : " + p.getLatitude() + " ; " + p.getLongitude());
System.out.println("looking up lat=" + p.getLatitude() + " lon=" + p.getLongitude());
xy = gcs2.findXYindexFromLatLon(p.getLatitude(), p.getLongitude(), null);
System.out.println("index= (" + xy[0] + ", " + xy[1] + ")");
Assert.assertEquals(xy[0], 1);
Assert.assertEquals(xy[1], 1);
} catch (IOException | InvalidRangeException e) {
e.printStackTrace();
}
}
