ucar.nc2.dataset.conv.NppConvention Maven / Gradle / Ivy
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package ucar.nc2.dataset.conv;
import ucar.nc2.*;
import ucar.nc2.constants.CDM;
import ucar.nc2.constants.FeatureType;
import ucar.nc2.constants._Coordinate;
import ucar.nc2.constants.AxisType;
import ucar.nc2.util.CancelTask;
import ucar.nc2.dataset.NetcdfDataset;
import java.io.IOException;
/**
* NPP/NPOESS Conventions
* note this is almost same as Avhrr ??
* @author caron
* @since Sep 11, 2009
* @see "http://jointmission.gsfc.nasa.gov/science/documents.html"
*/
/*
* NPP Common Data Format Control Book – External (CDFCB-X)
– Volume I – Overview
– Volume II – RDR Formats
– Volume III – SDR/TDR Formats
– Volume IV – EDR/IP/ARP and Geolocation Formats
– Volume V – Metadata
– Volume VI – Ancillary Data, Auxiliary Data, Messages, and Reports
– Volume VII – Downlink Formats (Application Packets)
– Volume VIII – Look Up Table Formats
*/
public class NppConvention extends ucar.nc2.dataset.CoordSysBuilder {
private static final String SPECTRAL_COORD_NAME = "Surface_Emissivity_Wavelengths";
private static final String PRESSURE_COORD_NAME = "Pressure_Levels";
public static boolean isMine(NetcdfFile ncfile) {
if (!ncfile.getFileTypeId().equals("HDF5")) return false;
// Visible Infrared Imaging Radiometer Suite (VIIRS)
Group loc = ncfile.findGroup("All_Data/VIIRS-MOD-GEO-TC_All");
if (loc == null)
loc = ncfile.findGroup("All_Data/VIIRS-CLD-AGG-GEO_All");
// Cross-track Infrared Sounder (CrIS)
// http://npp.gsfc.nasa.gov/cris.html
if (loc == null) {
loc = ncfile.findGroup("All_Data");
if (loc == null) return false;
Attribute att = ncfile.findGlobalAttribute("Instrument_Name");
if ((att == null) || !att.getStringValue().equals("CrIS")) return false;
if (null == loc.findVariable(PRESSURE_COORD_NAME)) return false;
}
if (null == loc.findVariable("Latitude")) return false;
return null != loc.findVariable("Longitude");
}
public NppConvention() {
this.conventionName = "NPP/NPOESS";
}
public void augmentDataset(NetcdfDataset ds, CancelTask cancelTask) throws IOException {
ds.addAttribute(null, new Attribute("FeatureType", FeatureType.SWATH.toString()));
boolean hasPressureLevels = false;
Variable spectralCoord = null;
Group group = ds.findGroup("All_Data/VIIRS-MOD-GEO-TC_All");
if (group == null)
group = ds.findGroup("All_Data/VIIRS-CLD-AGG-GEO_All");
if (group == null) {
group = ds.findGroup("All_Data");
if (group == null) throw new IllegalStateException();
hasPressureLevels = true;
spectralCoord = group.findVariable(SPECTRAL_COORD_NAME);
}
Variable lat = group.findVariable("Latitude");
lat.addAttribute(new Attribute(CDM.UNITS, CDM.LAT_UNITS));
lat.addAttribute(new Attribute(_Coordinate.AxisType, AxisType.Lat.toString()));
Variable lon = group.findVariable("Longitude");
lon.addAttribute(new Attribute(CDM.UNITS, CDM.LON_UNITS));
lon.addAttribute(new Attribute(_Coordinate.AxisType, AxisType.Lon.toString()));
int[] shape = lat.getShape();
assert shape.length == 2;
Dimension scan = new Dimension("scan", shape[0]);
Dimension xscan = new Dimension("xscan", shape[1]);
group.addDimension(scan);
group.addDimension(xscan);
lat.setDimensions("scan xscan");
lon.setDimensions("scan xscan");
Dimension altd = null;
if (hasPressureLevels) {
Variable alt = group.findVariable(PRESSURE_COORD_NAME);
alt.addAttribute(new Attribute(_Coordinate.AxisType, AxisType.Pressure.toString()));
shape = alt.getShape();
assert shape.length == 1;
altd = new Dimension(PRESSURE_COORD_NAME, shape[0]);
group.addDimension(altd);
alt.setDimensions(PRESSURE_COORD_NAME);
}
Dimension spectrald = null;
if (null != spectralCoord) {
spectralCoord.addAttribute(new Attribute(_Coordinate.AxisType, AxisType.Spectral.toString()));
shape = spectralCoord.getShape();
assert shape.length == 1;
spectrald = new Dimension(SPECTRAL_COORD_NAME, shape[0]);
group.addDimension(spectrald);
spectralCoord.setDimensions(SPECTRAL_COORD_NAME);
}
for (Variable v : group.getVariables()) {
int[] vs = v.getShape();
if ((vs.length == 2) && (vs[0] == scan.getLength()) && vs[1] == xscan.getLength()) {
v.setDimensions("scan xscan");
v.addAttribute(new Attribute(_Coordinate.Axes, "Latitude Longitude"));
} else if ((vs.length == 3) && altd != null &&
(vs[0] == altd.getLength()) && (vs[1] == scan.getLength()) && vs[2] == xscan.getLength()) {
v.setDimensions(PRESSURE_COORD_NAME+" scan xscan");
v.addAttribute(new Attribute(_Coordinate.Axes, PRESSURE_COORD_NAME+" Latitude Longitude"));
} else if ((vs.length == 3) && spectrald != null &&
(vs[0] == spectrald.getLength()) && (vs[1] == scan.getLength()) && vs[2] == xscan.getLength()) {
v.setDimensions(SPECTRAL_COORD_NAME+" scan xscan");
v.addAttribute(new Attribute(_Coordinate.Axes, SPECTRAL_COORD_NAME+" Latitude Longitude"));
}
}
/*
F:\data\cdmUnitTest\ft\image\npp\GMTCO_npp_d20030125_t084705_e084830_b00015_c20071212222807_den_OPS_SEG.h5
:AggregateBeginningTime = "084705.090560Z";
:AggregateEndingDate = "20030125";
:AggregateEndingTime = "084830.543424Z";
probably
YYYYMMDDHHMMSSssssss
20030125084705090560
2003-01-25T08:47:05
mysterious is
long ScanMidTime(=48);
:_FillValue = -993L; // long
:_ChunkSize = 48; // int
data:
{1422175657912747, 1422175659699117, 1422175661485487, 1422175663271857, 1422175665058227, ...
what is 48 ?
data is byte QF2_VIIRSMODGEOTC(scan=768, xscan=3200);
*/
/* Group PRODUCT_METADATA {
Group PRODUCT_DETAILS {
PRODUCT_DETAILS:UNIQUE_ID = "3AVHR_22NOV2007_0902";
PRODUCT_DETAILS:PRODUCT_TYPE = "STANDARD(FULL DISK) ";
PRODUCT_DETAILS:PROCESSING_SOFTWARE = "InPGS_XXXXXXXXXXXXXX";
PRODUCT_DETAILS:SPACECRAFT_ID = "INSAT-3A ";
PRODUCT_DETAILS:SENSOR_ID = "VHR";
PRODUCT_DETAILS:ACQUISITION_TYPE = "FULL FRAME ";
PRODUCT_DETAILS:ACQUISITION_DATE = "22NOV2007";
PRODUCT_DETAILS:ACQUISITION_TIME_IN_GMT = "0902";
PRODUCT_DETAILS:PRODUCT_NAME = " FULL DISK";
PRODUCT_DETAILS:PROCESSING_LEVEL = "L1B";
PRODUCT_DETAILS:BAND_COMBINATION = "Visible(VIS),Thermal Infrared(TIR),Water Vapour(WV)";
PRODUCT_DETAILS:PRODUCT_CODE = "ST00001HD";
}
Group info = ds.findGroup("PRODUCT_METADATA/PRODUCT_DETAILS");
String dateS = info.findAttribute("ACQUISITION_DATE").getStringValue();
String timeS = info.findAttribute("ACQUISITION_TIME_IN_GMT").getStringValue();
SimpleDateFormat format = new SimpleDateFormat("ddMMMyyyyHHmm");
format.setTimeZone(java.util.TimeZone.getTimeZone("GMT"));
try {
Date d = format.parse(dateS+timeS);
VariableDS time = new VariableDS(ds, vhrr, null, "time", DataType.LONG, "",
"seconds since 1970-01-01 00:00", "time generated from PRODUCT_METADATA/PRODUCT_DETAILS");
time.addAttribute( new Attribute(_Coordinate.AxisType, AxisType.Time.toString())); // // LOOK : cant handle scalar coordinates yet ??
time.addAttribute( new Attribute("IsoDate", new DateFormatter().toDateTimeStringISO(d)));
ds.addVariable(vhrr, time);
ArrayLong.D0 timeData = new ArrayLong.D0();
timeData.set(d.getTime() / 1000);
time.setCachedData(timeData, true);
} catch (ParseException e) {
e.printStackTrace();
throw new IOException(e.getMessage());
} */
ds.finish();
}
}
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