/**
* Constructor.
*
* @param ncfile the netccdf file
* @param typedDataVariables list of data variables; all record variables will be added to this
* list, except . You can remove extra
* @param obsTimeVName observation time variable name (required)
* @param nomTimeVName nominal time variable name (may be null)
* @throws IllegalArgumentException if ncfile has no unlimited dimension and recDimName is null.
*/
public RecordDatasetHelper(
NetcdfDataset ncfile,
String obsTimeVName,
String nomTimeVName,
List<VariableSimpleIF> typedDataVariables,
String recDimName,
Formatter errBuffer) {
this.ncfile = ncfile;
this.obsTimeVName = obsTimeVName;
this.nomTimeVName = nomTimeVName;
this.errs = errBuffer;
// check if we already have a structure vs if we have to add it.
if (this.ncfile.hasUnlimitedDimension()) {
this.ncfile.sendIospMessage(NetcdfFile.IOSP_MESSAGE_ADD_RECORD_STRUCTURE);
this.recordVar = (StructureDS) this.ncfile.getRootGroup().findVariable("record");
this.obsDim = ncfile.getUnlimitedDimension();
} else {
if (recDimName == null)
throw new IllegalArgumentException(
"File <"
+ this.ncfile.getLocation()
+ "> has no unlimited dimension, specify psuedo record dimension with observationDimension global attribute.");
this.obsDim = this.ncfile.getRootGroup().findDimension(recDimName);
this.recordVar = new StructurePseudoDS(this.ncfile, null, "record", null, obsDim);
}
// create member variables
List<Variable> recordMembers = ncfile.getVariables();
for (Variable v : recordMembers) {
if (v == recordVar) continue;
if (v.isScalar()) continue;
if (v.getDimension(0) == this.obsDim) typedDataVariables.add(v);
}
// need the time units
Variable timeVar = ncfile.findVariable(obsTimeVName);
String timeUnitString =
ncfile.findAttValueIgnoreCase(timeVar, CDM.UNITS, "seconds since 1970-01-01");
try {
timeUnit = new DateUnit(timeUnitString);
} catch (Exception e) {
if (null != errs) errs.format("Error on string = %s == %s%n", timeUnitString, e.getMessage());
try {
timeUnit = new DateUnit("seconds since 1970-01-01");
} catch (Exception e1) {
// cant happen
}
}
}
