// convert to shared dimensions
private void setSharedDimensions(
Variable v, List<Element> values, List<Dimension> unknownDims, String location) {
if (values.size() == 0) return;
// remove the "scalar" dumbension
Iterator<Element> iter = values.iterator();
while (iter.hasNext()) {
Element value = iter.next();
String dimName = value.getText().trim();
if (dimName.equalsIgnoreCase("scalar")) iter.remove();
}
// gotta have same number of dimensions
List<Dimension> oldDims = v.getDimensions();
if (oldDims.size() != values.size()) {
log.error("Different number of dimensions for {} {}", v, location);
return;
}
List<Dimension> newDims = new ArrayList<>();
Group group = v.getParentGroup();
for (int i = 0; i < values.size(); i++) {
Element value = values.get(i);
String dimName = value.getText().trim();
dimName = NetcdfFile.makeValidCdmObjectName(dimName);
Dimension dim = group.findDimension(dimName);
Dimension oldDim = oldDims.get(i);
if (dim == null) dim = checkUnknownDims(dimName, unknownDims, oldDim, location);
if (dim == null) {
log.error(
"Unknown Dimension= {} for variable = {} {} ", dimName, v.getFullName(), location);
return;
}
if (dim.getLength() != oldDim.getLength()) {
log.error(
"Shared dimension ("
+ dim.getShortName()
+ ") has different length than data dimension ("
+ oldDim.getShortName()
+ ") shared="
+ dim.getLength()
+ " org="
+ oldDim.getLength()
+ " for "
+ v
+ " "
+ location);
return;
}
newDims.add(dim);
}
v.setDimensions(newDims);
if (showWork) System.out.printf(" set shared dimensions for %s %n", v.getNameAndDimensions());
}
private FeatureType amendGrid(
Element gridElem, NetcdfFile ncfile, Group parent, String location) {
List<Dimension> unknownDims = new ArrayList<>();
// always has x and y dimension
String xdimSizeS = gridElem.getChild("XDim").getText().trim();
String ydimSizeS = gridElem.getChild("YDim").getText().trim();
int xdimSize = Integer.parseInt(xdimSizeS);
int ydimSize = Integer.parseInt(ydimSizeS);
parent.addDimensionIfNotExists(new Dimension("XDim", xdimSize));
parent.addDimensionIfNotExists(new Dimension("YDim", ydimSize));
/* see HdfEosModisConvention
UpperLeftPointMtrs=(-20015109.354000,1111950.519667)
LowerRightMtrs=(-18903158.834333,-0.000000)
Projection=GCTP_SNSOID
ProjParams=(6371007.181000,0,0,0,0,0,0,0,0,0,0,0,0)
SphereCode=-1
*/
Element proj = gridElem.getChild("Projection");
if (proj != null) {
Variable crs = new Variable(ncfile, parent, null, HDFEOS_CRS);
crs.setDataType(DataType.SHORT);
crs.setDimensions(""); // scalar
crs.setCachedData(Array.makeArray(DataType.SHORT, 1, 0, 0)); // fake data
parent.addVariable(crs);
addAttributeIfExists(gridElem, HDFEOS_CRS_Projection, crs, false);
addAttributeIfExists(gridElem, HDFEOS_CRS_UpperLeft, crs, true);
addAttributeIfExists(gridElem, HDFEOS_CRS_LowerRight, crs, true);
addAttributeIfExists(gridElem, HDFEOS_CRS_ProjParams, crs, true);
addAttributeIfExists(gridElem, HDFEOS_CRS_SphereCode, crs, false);
}
// global Dimensions
Element d = gridElem.getChild("Dimension");
List<Element> dims = d.getChildren();
for (Element elem : dims) {
String name = elem.getChild("DimensionName").getText().trim();
name = NetcdfFile.makeValidCdmObjectName(name);
if (name.equalsIgnoreCase("scalar")) continue;
String sizeS = elem.getChild("Size").getText().trim();
int length = Integer.parseInt(sizeS);
Dimension old = parent.findDimension(name);
if ((old == null) || (old.getLength() != length)) {
if (length > 0) {
Dimension dim = new Dimension(name, length);
if (parent.addDimensionIfNotExists(dim) && showWork)
System.out.printf(" Add dimension %s %n", dim);
} else {
log.warn("Dimension {} has size {} {} ", sizeS, name, location);
Dimension udim = new Dimension(name, 1);
udim.setGroup(parent);
unknownDims.add(udim);
if (showWork) System.out.printf(" Add dimension %s %n", udim);
}
}
}
// Geolocation Variables
Group geoFieldsG = parent.findGroup(GEOLOC_FIELDS);
if (geoFieldsG == null) geoFieldsG = parent.findGroup(GEOLOC_FIELDS2);
if (geoFieldsG != null) {
Element floc = gridElem.getChild("GeoField");
List<Element> varsLoc = floc.getChildren();
for (Element elem : varsLoc) {
String varname = elem.getChild("GeoFieldName").getText().trim();
Variable v = geoFieldsG.findVariable(varname);
// if (v == null)
// v = geoFieldsG.findVariable( H4header.createValidObjectName(varname));
assert v != null : varname;
Element dimList = elem.getChild("DimList");
List<Element> values = dimList.getChildren("value");
setSharedDimensions(v, values, unknownDims, location);
}
}
// Data Variables
Group dataG = parent.findGroup(DATA_FIELDS);
if (dataG == null)
dataG =
parent.findGroup(
DATA_FIELDS2); // eg C:\data\formats\hdf4\eos\mopitt\MOP03M-200501-L3V81.0.1.hdf
if (dataG != null) {
Element f = gridElem.getChild("DataField");
List<Element> vars = f.getChildren();
for (Element elem : vars) {
String varname = elem.getChild("DataFieldName").getText().trim();
varname = NetcdfFile.makeValidCdmObjectName(varname);
Variable v = dataG.findVariable(varname);
// if (v == null)
// v = dataG.findVariable( H4header.createValidObjectName(varname));
assert v != null : varname;
Element dimList = elem.getChild("DimList");
List<Element> values = dimList.getChildren("value");
setSharedDimensions(v, values, unknownDims, location);
}
// get projection
String projS = null;
Element projElem = gridElem.getChild("Projection");
if (projElem != null) projS = projElem.getText().trim();
boolean isLatLon = "GCTP_GEO".equals(projS);
// look for XDim, YDim coordinate variables
if (isLatLon) {
for (Variable v : dataG.getVariables()) {
if (v.isCoordinateVariable()) {
if (v.getShortName().equals("YDim")) {
v.addAttribute(new Attribute(_Coordinate.AxisType, AxisType.Lat.toString()));
v.addAttribute(new Attribute(CDM.UNITS, CDM.LAT_UNITS));
}
if (v.getShortName().equals("XDim"))
v.addAttribute(new Attribute(_Coordinate.AxisType, AxisType.Lon.toString()));
}
}
}
}
return FeatureType.GRID;
}