// do not call directly
@Override
public Array reallyRead(Variable client, Section section, CancelTask cancelTask)
throws IOException, InvalidRangeException {
// see if its really a full read
if ((null == section) || section.computeSize() == getSize())
return reallyRead(client, cancelTask);
if (orgVar == null) return getMissingDataArray(section.getShape());
return orgVar.read(section);
}
long computeArraySize(SDArray da) throws Exception {
assert (da.getContainerVar() instanceof DPrimitive);
BaseType base = da.getPrimitiveVector().getTemplate();
DataType dtype = DODSNetcdfFile.convertToNCType(base);
int elemSize = dtype.getSize();
int n = da.numDimensions();
List<Range> ranges = new ArrayList<Range>(n);
long size = 0;
for (int i = 0; i < n; i++) {
ranges.add(new Range(da.getStart(i), da.getStop(i), da.getStride(i)));
Section s = new Section(ranges);
size += s.computeSize() * elemSize;
}
return size;
}
/**
* Read the data for each variable passed in
*
* @param v2
* @param section
* @return output data
* @throws IOException
* @throws ucar.ma2.InvalidRangeException
*/
public Array readData(Variable v2, Section section) throws IOException, InvalidRangeException {
// subset
Object data;
Array outputData;
byte[] vdata = null;
NOWRadheader.Vinfo vinfo;
ByteBuffer bos;
List<Range> ranges = section.getRanges();
vinfo = (NOWRadheader.Vinfo) v2.getSPobject();
try {
vdata = headerParser.getData((int) vinfo.hoff);
} catch (Exception e) {
}
bos = ByteBuffer.wrap(vdata);
data = readOneScanData(bos, vinfo, v2.getShortName());
outputData = Array.factory(v2.getDataType().getPrimitiveClassType(), v2.getShape(), data);
outputData = outputData.flip(1);
// outputData = outputData.flip(2);
return (outputData.sectionNoReduce(ranges).copy());
// return outputData;
}
public Array readData(Variable v2, Section section) throws IOException, InvalidRangeException {
Vgroup vgroup = (Vgroup) v2.getSPobject();
Range scanRange = section.getRange(0);
Range radialRange = section.getRange(1);
Range gateRange = section.getRange(2);
Array data = Array.factory(v2.getDataType().getPrimitiveClassType(), section.getShape());
IndexIterator ii = data.getIndexIterator();
for (int i = scanRange.first(); i <= scanRange.last(); i += scanRange.stride()) {
Cinrad2Record[] mapScan = vgroup.map[i];
readOneScan(mapScan, radialRange, gateRange, vgroup.datatype, ii);
}
return data;
}
public Array readData(Variable v2, Section section) throws IOException, InvalidRangeException {
// Vgroup vgroup = (Vgroup) v2.getSPobject();
// Range scanRange = section.getRange(0);
// Range radialRange = section.getRange(1);
// Range gateRange = section.getRange(2);
Array data = Array.factory(v2.getDataType().getPrimitiveClassType(), section.getShape());
IndexIterator ii = data.getIndexIterator();
List<List<Ray>> groups;
String shortName = v2.getShortName();
if (shortName.startsWith("Reflectivity")) groups = volScan.getReflectivityGroups();
else if (shortName.startsWith("Velocity")) groups = volScan.getVelocityGroups();
else if (shortName.startsWith("TotalPower")) groups = volScan.getTotalPowerGroups();
else if (shortName.startsWith("Width")) groups = volScan.getWidthGroups();
else if (shortName.startsWith("DiffReflectivity"))
groups = volScan.getDifferentialReflectivityGroups();
else throw new IllegalStateException("Illegal variable name = " + shortName);
if (section.getRank() == 2) {
Range radialRange = section.getRange(0);
Range gateRange = section.getRange(1);
List<Ray> lli = groups.get(0);
readOneScan(lli, radialRange, gateRange, ii);
} else {
Range scanRange = section.getRange(0);
Range radialRange = section.getRange(1);
Range gateRange = section.getRange(2);
for (int i = scanRange.first(); i <= scanRange.last(); i += scanRange.stride()) {
readOneScan(groups.get(i), radialRange, gateRange, ii);
}
}
return data;
}
// section of regular Variable
@Override
protected Array _read(Section section) throws IOException, InvalidRangeException {
// really a full read
if ((null == section) || section.computeSize() == getSize()) return _read();
Array result;
if (hasCachedData()) result = super._read(section);
else result = proxyReader.reallyRead(this, section, null);
if (needScaleOffsetMissing) return convertScaleOffsetMissing(result);
else if (needEnumConversion) return convertEnums(result);
else return result;
}
/**
* Read data from a top level Variable and return a memory resident Array.
*
* @param v2 Variable. It may have FLOAT/INTEGER data type.
* @param section wanted section of data of Variable. The section list is a list of ucar.ma2.Range
* which define the requested data subset.
* @return Array of data which will be read from Variable through this call.
*/
public Array readData1(ucar.nc2.Variable v2, Section section)
throws IOException, InvalidRangeException {
// doData(raf, ncfile, varList);
int[] sh = section.getShape();
Array temp = Array.factory(v2.getDataType(), sh);
long pos0 = 0;
// Suppose that the data has LayoutRegular
LayoutRegular index = new LayoutRegular(pos0, v2.getElementSize(), v2.getShape(), section);
if (v2.getShortName().startsWith("time") | v2.getShortName().startsWith("numGates")) {
temp = readIntData(index, v2);
} else {
temp = readFloatData(index, v2);
}
return temp;
}