org.autoplot.cdf

Class CdfVirtualVars

java.lang.Object

org.autoplot.cdf.CdfVirtualVars

public class CdfVirtualVars
extends java.lang.Object

Implementations of the CDF virtual variables seen in CDAWeb, but implemented in QDataSet. These should reflect a subset of those functions, with the IDL implementations at http://spdf.gsfc.nasa.gov/CDAWlib.html see ftp://cdaweb.gsfc.nasa.gov/pub/CDAWlib/unix/CDAWlib.tar.gz, routine read_myCDF.pro

See Also:

https://cdaweb.gsfc.nasa.gov/pub/software/cdawlib/source/virtual_funcs.pro

Constructor Summary

Constructors

Constructor and Description
CdfVirtualVars()

Method Summary

Modifier and Type	Method and Description
protected static QDataSet	addSeconds(QDataSet burley, double seconds)
protected static QDataSet	alternateView(QDataSet burley)
protected static QDataSet	calcP(java.util.List<QDataSet> args)
protected static QDataSet	computeMagnitude(QDataSet burley)
protected static QDataSet	convertLog10(QDataSet burley)
static QDataSet	convPos(java.util.List<QDataSet> args, java.lang.String coordSys)
static QDataSet	execute(java.util.Map<java.lang.String,java.lang.Object> metadata, java.lang.String function, java.util.List<QDataSet> args, ProgressMonitor mon) Implementations of CDF virtual functions.
static boolean	isSupported(java.lang.String function) return true if the function is supported.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CdfVirtualVars

public CdfVirtualVars()

Method Detail

execute

public static QDataSet execute(java.util.Map<java.lang.String,java.lang.Object> metadata,
                               java.lang.String function,
                               java.util.List<QDataSet> args,
                               ProgressMonitor mon)
                        throws java.lang.IllegalArgumentException

Implementations of CDF virtual functions. These are a subset of those in the CDAWeb library, plus a couple extra that they will presumably add to the library at some point.

Parameters:

metadata - the metadata for the new result dataset, CDF semantics such as FILLVAL=-1e31

function - the function name, which is case insensitive. See code isSupported for list of function names.

args - list of QDataSets that are the arguments to the function

mon - monitor for the function

Returns:

the computed variable.

Throws:

java.lang.IllegalArgumentException

See Also:

isSupported(java.lang.String), https://spdf.gsfc.nasa.gov/istp_guide/vattributes.html

calcP

protected static QDataSet calcP(java.util.List<QDataSet> args)

Parameters:

args - list of datasets: [ V_GSE_p, np ]

Returns:

result which is 1.6726e-6 *np[i]*V_GSE_p[0,i]^2.0

See Also:

around "FUNCTION calc_p"

convPos

public static QDataSet convPos(java.util.List<QDataSet> args,
                               java.lang.String coordSys)

alternateView

protected static QDataSet alternateView(QDataSet burley)

computeMagnitude

protected static QDataSet computeMagnitude(QDataSet burley)

convertLog10

protected static QDataSet convertLog10(QDataSet burley)

addSeconds

protected static QDataSet addSeconds(QDataSet burley,
                                     double seconds)

isSupported

public static boolean isSupported(java.lang.String function)

return true if the function is supported.

Parameters:

function - the function name, such as "compute_magnitude"

Returns:

true if the function is supported.