ucar.nc2.thredds
Class DqcStationObsDataset
java.lang.Object
ucar.nc2.dt.TypedDatasetImpl
ucar.nc2.dt.point.PointObsDatasetImpl
ucar.nc2.dt.point.StationObsDatasetImpl
ucar.nc2.thredds.DqcStationObsDataset
- All Implemented Interfaces:
- PointCollection, PointObsDataset, StationCollection, StationObsDataset, TypedDataset
public class DqcStationObsDataset
- extends StationObsDatasetImpl
This implements a StationObsDataset with a DQC.
- Author:
- John Caron
Methods inherited from class ucar.nc2.dt.point.StationObsDatasetImpl |
getData, getData, getData, getData, getData, getData, getData, getData, getData, getDataClass, getDataIterator, getDataIterator, getDetailInfo, getScientificDataType, getStation, getStationDataCount, getStations, getStations, getStations, getStations, sortByTime |
Methods inherited from class ucar.nc2.dt.TypedDatasetImpl |
close, findGlobalAttributeIgnoreCase, getBoundingBox, getDataVariable, getDataVariables, getEndDate, getGlobalAttributes, getLocationURI, getNetcdfFile, getStartDate, removeDataVariable, setDescription, setLocationURI, setTitle |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
factory
public static DqcStationObsDataset factory(InvDataset ds,
String dqc_location,
StringBuilder errlog)
throws IOException
- Throws:
IOException
factory
public static DqcStationObsDataset factory(String desc,
String dqc_location,
StringBuilder errlog)
throws IOException
- Throws:
IOException
setTimeUnits
protected void setTimeUnits()
- Specified by:
setTimeUnits
in class PointObsDatasetImpl
setStartDate
protected void setStartDate()
- Specified by:
setStartDate
in class TypedDatasetImpl
setEndDate
protected void setEndDate()
- Specified by:
setEndDate
in class TypedDatasetImpl
setBoundingBox
protected void setBoundingBox()
- Specified by:
setBoundingBox
in class TypedDatasetImpl
getTitle
public String getTitle()
- Specified by:
getTitle
in interface TypedDataset
- Overrides:
getTitle
in class TypedDatasetImpl
- Returns:
- Title of the dataset.
getLocation
public String getLocation()
- Overrides:
getLocation
in class TypedDatasetImpl
getDescription
public String getDescription()
- Specified by:
getDescription
in interface TypedDataset
- Overrides:
getDescription
in class TypedDatasetImpl
- Returns:
- Text information about this dataset.
getData
public List getData(Station s,
CancelTask cancel)
throws IOException
- Description copied from interface:
StationCollection
- Get all data for this Station, allow user to cancel.
- Parameters:
s
- for this Stationcancel
- allow user to cancel. Implementors should return ASAP.
- Returns:
- List of getDataClass()
- Throws:
IOException
- on io error
getData
public List getData(CancelTask cancel)
throws IOException
- Description copied from interface:
PointCollection
- Get all data, allow user to cancel. Return null if too expensive to implement.
Call getDataCount() to get estimate of size.
This will return a list of getDataClass(), but the actual data may or may not already be read in
to memory. In any case, you call dataType.getData() to get the data.
- Parameters:
cancel
- allow user to cancel. Implementors should return ASAP.
- Returns:
- List of type getDataClass()
- Throws:
IOException
- on io error- See Also:
as a (possibly) more efficient alternative
getDataCount
public int getDataCount()
- Description copied from interface:
PointCollection
- Get estimate of number of data records (may not be exact).
Return -1 if not able to estimate.
- Returns:
- number of data records or -1
getDataIterator
public DataIterator getDataIterator(int bufferSize)
throws IOException
- Description copied from interface:
PointCollection
- Get an efficient iterator over all the data in the Collection. You must fully process the
data, or copy it out of the StructureData, as you iterate over it. DO NOT KEEP ANY REFERENCES to the
dataType object or the StructureData object.
This is the efficient way to get all the data, it can be 100 times faster than getData().
This will return an iterator over type getDataClass(), and the actual data has already been read
into memory, that is, dataType.getData() will not incur any I/O.
This is accomplished by buffering bufferSize amount of data at once.
We dont need a cancelTask, just stop the iteration if the user want to cancel.
Example for point observations:
Iterator iter = pointObsDataset.getDataIterator();
while (iter.hasNext()) {
PointObsDatatype pobs = (PointObsDatatype) iter.next();
StructureData sdata = pobs.getData();
// process fully
}
- Parameters:
bufferSize
- if > 0, the internal buffer size, else use the default. Typically 100k - 1M for best results.
- Returns:
- iterator over type getDataClass(), no guarenteed order.
- Throws:
IOException
- on io error
main
public static void main(String[] args)
throws IOException
- Throws:
IOException
Copyright © 1999-2011 UCAR/Unidata. All Rights Reserved.