ucar.nc2.dt.point.UnidataStationObsDataset2 Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of netcdf Show documentation
Show all versions of netcdf Show documentation
The NetCDF-Java Library is a Java interface to NetCDF files,
as well as to many other types of scientific data formats.
// $Id: UnidataStationObsDataset2.java 51 2006-07-12 17:13:13Z caron $
/*
* Copyright 1998-2009 University Corporation for Atmospheric Research/Unidata
*
* Portions of this software were developed by the Unidata Program at the
* University Corporation for Atmospheric Research.
*
* Access and use of this software shall impose the following obligations
* and understandings on the user. The user is granted the right, without
* any fee or cost, to use, copy, modify, alter, enhance and distribute
* this software, and any derivative works thereof, and its supporting
* documentation for any purpose whatsoever, provided that this entire
* notice appears in all copies of the software, derivative works and
* supporting documentation. Further, UCAR requests that the user credit
* UCAR/Unidata in any publications that result from the use of this
* software or in any product that includes this software. The names UCAR
* and/or Unidata, however, may not be used in any advertising or publicity
* to endorse or promote any products or commercial entity unless specific
* written permission is obtained from UCAR/Unidata. The user also
* understands that UCAR/Unidata is not obligated to provide the user with
* any support, consulting, training or assistance of any kind with regard
* to the use, operation and performance of this software nor to provide
* the user with any updates, revisions, new versions or "bug fixes."
*
* THIS SOFTWARE IS PROVIDED BY UCAR/UNIDATA "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL UCAR/UNIDATA BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE ACCESS, USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package ucar.nc2.dt.point;
import ucar.ma2.*;
import ucar.nc2.*;
import ucar.nc2.dataset.NetcdfDataset;
import ucar.nc2.util.CancelTask;
import ucar.nc2.dt.*;
import java.io.*;
import java.util.*;
/**
* This handles datasets in the original (now outdated) "Unidata Point Format".
* @deprecated use UnidataStationObsDataset instead of this.
*
* @author John Caron
* @version $Id: UnidataStationObsDataset2.java 51 2006-07-12 17:13:13Z caron $
*/
public class UnidataStationObsDataset2 extends StationObsDatasetImpl implements TypedDatasetFactoryIF {
static public boolean isValidFile(NetcdfFile ds) {
return ds.findAttValueIgnoreCase(null, "Conventions", "").equalsIgnoreCase("Unidata Station Format v1.0");
}
/////////////////////////////////////////////////
// TypedDatasetFactoryIF
public boolean isMine(NetcdfDataset ds) { return isValidFile(ds); }
public TypedDataset open( NetcdfDataset ncd, ucar.nc2.util.CancelTask task, StringBuilder errlog) throws IOException {
return new UnidataStationObsDataset2( ncd);
}
public UnidataStationObsDataset2() {}
private Structure recordVar;
private RecordDatasetHelper recordHelper;
private boolean debugRead = false;
public UnidataStationObsDataset2(NetcdfDataset ds) throws IOException {
super(ds);
title = "Station Data from NWS";
desc = "Station Data from NWS distributed through the Unidata IDD realtime datastream. " +
"Decoded into netCDF files by metar2nc (new). Usually 1 hour of data";
recordHelper = new RecordDatasetHelper(ds, "time_observation","time_nominal", dataVariables, parseInfo);
recordHelper.setStationInfo( "station_index", "location");
removeDataVariable("time_observation");
removeDataVariable("time_nominal");
removeDataVariable("previousReport");
removeDataVariable("station_index");
recordVar = recordHelper.recordVar;
timeUnit = recordHelper.timeUnit;
// get the station info
ArrayChar stationIdArray = (ArrayChar) ds.findVariable("id").read();
ArrayChar stationDescArray = (ArrayChar) ds.findVariable("location").read();
Array latArray = ds.findVariable("latitude").read();
Array lonArray = ds.findVariable("longitude").read();
Array elevArray = ds.findVariable("elevation").read();
Array lastRecordArray = ds.findVariable("lastReport").read();
Array numReportsArray = ds.findVariable("numberReports").read();
Index ima = lastRecordArray.getIndex();
int n = ds.findVariable("number_stations").readScalarInt();
recordHelper.stnHash = new HashMap( 2*n);
for (int i = 0; i= 0) {
try {
if (debugRead) System.out.println(name + " try to read at record "+recno);
StructureData sdata = recordVar.readStructure(recno);
int prevRecord = sdata.getScalarInt("previousReport");
float obsTime = sdata.convertScalarFloat("time_observation");
float nomTime = sdata.convertScalarFloat("time_nominal");
obs.add( 0, recordHelper.new RecordStationObs( this, obsTime, nomTime, recno));
recno = prevRecord;
}
catch (ucar.ma2.InvalidRangeException e) {
e.printStackTrace();
throw new IOException( e.getMessage());
}
}
return obs;
}
}
protected StationObsDatatype makeObs(int recno) throws IOException {
try {
StructureData sdata = recordVar.readStructure(recno);
int stationIndex = sdata.getScalarInt("station_index");
ucar.unidata.geoloc.Station station = (ucar.unidata.geoloc.Station) stations.get(stationIndex);
if (station == null)
parseInfo.append("cant find station at index = "+stationIndex+"\n");
float obsTime = sdata.convertScalarFloat("time_observation");
float nomTime = sdata.convertScalarFloat("time_nominal");
return recordHelper.new RecordStationObs( station, obsTime, nomTime, recno);
} catch (ucar.ma2.InvalidRangeException e) {
e.printStackTrace();
throw new IOException( e.getMessage());
}
}
public DataIterator getDataIterator(int bufferSize) throws IOException {
return new StationDatatypeIterator(recordHelper.recordVar, bufferSize);
}
private class StationDatatypeIterator extends DatatypeIterator {
protected Object makeDatatypeWithData(int recnum, StructureData sdata) {
return recordHelper.new RecordStationObs( recnum, sdata);
}
StationDatatypeIterator(Structure struct, int bufferSize) {
super( struct, bufferSize);
}
}
}