ucar.unidata.data.point

Class PointObFactory

java.lang.Object

ucar.unidata.data.point.PointObFactory

public class PointObFactory
extends java.lang.Object

Factory for dealing with point observations

Author:

IDV Development Team

Field Summary

Fields

Modifier and Type	Field and Description
static float	OA_GRID_DEFAULT OA Grid Default value

Constructor Summary

Constructors

Constructor and Description
PointObFactory() Constructor

Method Summary

Modifier and Type	Method and Description
static visad.FieldImpl	barnes(visad.FieldImpl pointObs, visad.RealType type, float xSpacing, float ySpacing, int numPasses) Perform an object analysis on a set of point obs
static visad.FieldImpl	barnes(visad.FieldImpl pointObs, visad.RealType type, float xSpacing, float ySpacing, int numPasses, float gain, float scaleLength, au.gov.bom.aifs.osa.analysis.Barnes.AnalysisParameters params, visad.FieldImpl firstGuessField) Perform an object analysis on a set of point obs
static visad.FlatField	barnesOneTime(visad.FieldImpl pointObs, visad.RealType type, float xSpacing, float ySpacing, int numPasses) Do the analysis on the single time.
static visad.FlatField	barnesOneTime(visad.FieldImpl pointObs, visad.RealType type, float xSpacing, float ySpacing, int numPasses, float gain, float scaleLength, au.gov.bom.aifs.osa.analysis.Barnes.AnalysisParameters params) Do the analysis on the single time.
static visad.FlatField	barnesOneTime(visad.FieldImpl pointObs, visad.RealType type, float xSpacing, float ySpacing, int numPasses, float gain, float scaleLength, au.gov.bom.aifs.osa.analysis.Barnes.AnalysisParameters params, visad.FlatField firstGuess) Do the analysis on the single time.
static java.util.List	binTimes(java.util.List times, double binRoundTo, double binWidth) Bin the times
static visad.FieldImpl	extractParameter(visad.FieldImpl obs, visad.RealType parameter) Extract the parameter from some point obs
static visad.FieldImpl	extractParameter(visad.FieldImpl obs, java.lang.String paramName) Extract the parameter from some point obs
static double[]	getBoundingBox(visad.FieldImpl pointObs) Get the bounding box of the given obs
static double[]	getBoundingBoxOneTime(visad.FieldImpl pointObs) Get the bounding box of the given obs
static java.util.List<PointOb>	getPointObs(visad.FieldImpl field) Get the list of PointOb objects from the given field
static double	heatIndex(double T, double RH) Create heatIndex from temperature and relative humidity.
static visad.FieldImpl	makePointCloud(visad.FieldImpl pointObs, java.lang.String param) Make a point cloud structure from point obs
static PointOb	makePointOb(visad.georef.EarthLocation el) Make a PointOb from an EarthLocation.
static PointOb	makePointOb(visad.georef.EarthLocation el, visad.DateTime dt) Make a PointOb from an EarthLocation.
static PointOb	makePointOb(visad.georef.EarthLocation el, visad.DateTime dt, visad.Tuple tuple) Make a point ob
static visad.FieldImpl	makePointObField(PointOb point) Returns a point observation as a FieldImpl of type.
static visad.FieldImpl	makePointObs(visad.georef.EarthLocation el) Make a FieldImpl of PointOb-s from an EarthLocation.
static visad.FieldImpl	makePointObs(visad.georef.EarthLocation el, visad.DateTime dt) Make a FieldImpl of PointOb-s from an EarthLocation.
static visad.FieldImpl	makePointObs(ucar.nc2.ft.FeatureDatasetPoint input, DataChoice dataChoice, double binRoundTo, double binWidth, ucar.unidata.geoloc.LatLonRect llr, DateSelection dateSelection, boolean sample) Make point obs
static visad.FieldImpl	makePointObs(ucar.nc2.ft.FeatureDatasetPoint input, double binRoundTo, double binWidth, ucar.unidata.geoloc.LatLonRect llr, DateSelection dateSelection, boolean sample) Make point obs
static visad.FieldImpl	makePointObs(PointOb po) Make a FieldImpl from a PointOb.
static visad.FieldImpl	makePointObs(ucar.nc2.dt.PointObsDataset input) Make point obs from a PointObsDataset
static visad.FieldImpl	makePointObs(ucar.nc2.dt.PointObsDataset input, double binRoundTo, double binWidth) Make point obs
static visad.FieldImpl	makePointObs(ucar.nc2.dt.PointObsDataset input, double binRoundTo, double binWidth, ucar.unidata.geoloc.LatLonRect llr) Make point obs
static visad.FieldImpl	makePointObs(ucar.nc2.dt.PointObsDataset input, double binRoundTo, double binWidth, ucar.unidata.geoloc.LatLonRect llr, boolean sample) Make point obs
static visad.FieldImpl	makePointObsFromField(visad.FieldImpl input) Take a field of data and turn it into a field of PointObs.
static visad.FieldImpl	makePointObsFromField(visad.FieldImpl input, double binRoundTo, double binWidth) Take a field of data and turn it into a field of PointObs.
static visad.FieldImpl	makePointObsWRF(ucar.nc2.ft.FeatureDatasetPoint input, double binRoundTo, double binWidth, ucar.unidata.geoloc.LatLonRect llr, DateSelection dateSelection, boolean sample) _more_
static visad.FieldImpl	makeTimeSequenceOfPointObs(visad.FieldImpl pointObs) From a field of point observations, reorder them with time as the outer dimension.
static visad.FieldImpl	makeTimeSequenceOfPointObs(visad.FieldImpl pointObs, int lumpMinutes) From a field of point observations, reorder them with time as the outer dimension.
static visad.FieldImpl	makeTimeSequenceOfPointObs(java.util.List pointObs, int lumpMinutes, int componentIndex) From a field of point observations, reorder them with time as the outer dimension.
static ucar.nc2.dt.point.CFPointObWriter	makeWriter(java.io.DataOutputStream dos, visad.TupleType type, int[] skipIndices, int defaultStringLength, java.lang.String altUnit, int cnt, int[] slengths) Make a CFPointObWriter
static visad.FieldImpl	mergeData(java.util.List datas) Merge a List of FieldImpls of point obs into one.
static double	relativeHumidity(double T, double TD) 100*(EXP((17.625*TD)/(243.04+TD))/EXP((17.625*T)/(243.04+T)))
static visad.FieldImpl	removeTimeDimension(visad.FieldImpl pointObs) Remove the time dimension from a field of point obs, returning just and indexed list of the obs
static visad.FieldImpl	subSet(visad.FieldImpl pointObs, ucar.unidata.geoloc.LatLonRect bounds) Returns a subset of the field of point observations that lie within the boundaries of the LinearLatLonSet.
static visad.FieldImpl	subSet(visad.FieldImpl pointObs, visad.LinearLatLonSet bounds) Returns a subset of the field of point observations that lie within the boundaries of the LinearLatLonSet.
static double	windChill(double speed, double T) WC = 35.74 + 0.6215 * (T - 273.15) - 35.75 * (WS)**0.16 + 0.4275 * ( T - 273.15) * (WS)**0.16
static void	writeToNetcdf(java.io.File file, visad.FieldImpl field) Write the PointObs contained in the given field as a netcdf file

Methods inherited from class java.lang.Object

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

Field Detail

OA_GRID_DEFAULT

public static final float OA_GRID_DEFAULT

OA Grid Default value

See Also:

Constant Field Values

Constructor Detail

PointObFactory

public PointObFactory()

Constructor

Method Detail

makePointObField

public static visad.FieldImpl makePointObField(PointOb point)
                                        throws visad.VisADException,
                                               java.rmi.RemoteException

Returns a point observation as a FieldImpl of type. The type is:

  (Time -> ((lat, lon, alt) -> (data)))
 

Parameters:

point - point observation

Returns:

PointOb as a field

Throws:

java.rmi.RemoteException - Java RMI error

visad.VisADException - VisAD Error

makePointCloud

public static visad.FieldImpl makePointCloud(visad.FieldImpl pointObs,
                                             java.lang.String param)
                                      throws visad.VisADException,
                                             java.rmi.RemoteException

Make a point cloud structure from point obs

Parameters:

pointObs - the point obs

param - the parameter to extract - null if want all

Returns:

a PointCloud (time->((index)->((Latitude, Longitude, Altitude),param)))

Throws:

java.rmi.RemoteException - Java RMI problem

visad.VisADException - VisAD problem

makeTimeSequenceOfPointObs

public static visad.FieldImpl makeTimeSequenceOfPointObs(visad.FieldImpl pointObs)
                                                  throws visad.VisADException,
                                                         java.rmi.RemoteException

From a field of point observations, reorder them with time as the outer dimension.

Parameters:

pointObs - Field of point observations (index -> pointobs)

Returns:

time sequence of obs (time -> (index -> pointobs))

Throws:

java.rmi.RemoteException - Java RMI error

visad.VisADException - VisAD Error

makeTimeSequenceOfPointObs

public static visad.FieldImpl makeTimeSequenceOfPointObs(visad.FieldImpl pointObs,
                                                         int lumpMinutes)
                                                  throws visad.VisADException,
                                                         java.rmi.RemoteException

From a field of point observations, reorder them with time as the outer dimension.

Parameters:

pointObs - Field of point observations (index -> pointobs)

lumpMinutes - If greater then 0 is used to lump the times of the point obs together

Returns:

time sequence of obs (time -> (index -> pointobs))

Throws:

java.rmi.RemoteException - Java RMI error

visad.VisADException - VisAD Error

makeTimeSequenceOfPointObs

public static visad.FieldImpl makeTimeSequenceOfPointObs(java.util.List pointObs,
                                                         int lumpMinutes,
                                                         int componentIndex)
                                                  throws visad.VisADException,
                                                         java.rmi.RemoteException

From a field of point observations, reorder them with time as the outer dimension. If componentIndex > -1 then we extract that real value from the observation tuple and use that in the range. We also skip the intermediate index field and only use the first PointOb for each time step

Parameters:

pointObs - Field of point observations (index -> pointobs)

lumpMinutes - If greater then 0 is used to lump the times of the point obs together

componentIndex - If >= 0 then make a T->componentvalue field

Returns:

time sequence of obs (time -> (index -> pointobs))

Throws:

java.rmi.RemoteException - Java RMI error

visad.VisADException - VisAD Error

subSet

public static visad.FieldImpl subSet(visad.FieldImpl pointObs,
                                     ucar.unidata.geoloc.LatLonRect bounds)
                              throws visad.VisADException,
                                     java.rmi.RemoteException

Returns a subset of the field of point observations that lie within the boundaries of the LinearLatLonSet.

Parameters:

pointObs - set of obs.

bounds - LinearLatLonSet bounding box

Returns:

subset within the bounds

Throws:

java.rmi.RemoteException - Java RMI error

visad.VisADException - VisAD Error

subSet

public static visad.FieldImpl subSet(visad.FieldImpl pointObs,
                                     visad.LinearLatLonSet bounds)
                              throws visad.VisADException,
                                     java.rmi.RemoteException

Returns a subset of the field of point observations that lie within the boundaries of the LinearLatLonSet.

Parameters:

pointObs - set of obs.

bounds - LinearLatLonSet bounding box

Returns:

subset within the bounds

Throws:

java.rmi.RemoteException - Java RMI error

visad.VisADException - VisAD Error

getPointObs

public static java.util.List<PointOb> getPointObs(visad.FieldImpl field)
                                           throws visad.VisADException,
                                                  java.rmi.RemoteException

Get the list of PointOb objects from the given field

Parameters:

field - the field that contains the PointObs

Returns:

List of PointObs

Throws:

java.rmi.RemoteException - on badness

visad.VisADException - on badness

writeToNetcdf

public static void writeToNetcdf(java.io.File file,
                                 visad.FieldImpl field)
                          throws visad.VisADException,
                                 java.rmi.RemoteException,
                                 java.io.IOException

Write the PointObs contained in the given field as a netcdf file

Parameters:

file - file to write to

field - The field

Throws:

java.io.IOException - on badness

java.rmi.RemoteException - on badness

visad.VisADException - on badness

makeWriter

public static ucar.nc2.dt.point.CFPointObWriter makeWriter(java.io.DataOutputStream dos,
                                                           visad.TupleType type,
                                                           int[] skipIndices,
                                                           int defaultStringLength,
                                                           java.lang.String altUnit,
                                                           int cnt,
                                                           int[] slengths)
                                                    throws java.lang.Exception

Make a CFPointObWriter

Parameters:

dos - the output stream

type - the tupe

skipIndices - which indices to skip

defaultStringLength - the default string length

altUnit - the altitude unit

cnt - the number

slengths - string lengths

Returns:

the writer

Throws:

java.lang.Exception - problem creating something

makePointObsFromField

public static visad.FieldImpl makePointObsFromField(visad.FieldImpl input)
                                             throws visad.VisADException

Take a field of data and turn it into a field of PointObs. Right now, this assumes a surface data from an ADDE server.

Parameters:

input - FieldImpl of raw VisAD data

Returns:

field of PointObs

Throws:

visad.VisADException - couldn't create the VisAD data

makePointObsFromField

public static visad.FieldImpl makePointObsFromField(visad.FieldImpl input,
                                                    double binRoundTo,
                                                    double binWidth)
                                             throws visad.VisADException

Take a field of data and turn it into a field of PointObs. Right now, this assumes a surface data from an ADDE server.

Parameters:

input - FieldImpl of raw VisAD data

binRoundTo - time bin round to

binWidth - time bin size

Returns:

The data

Throws:

visad.VisADException - On badness

makePointObs

public static visad.FieldImpl makePointObs(ucar.nc2.dt.PointObsDataset input)
                                    throws java.lang.Exception

Make point obs from a PointObsDataset

Parameters:

input - pointobs dataset to load

Returns:

FieldImpl of form (index) -> PointOb

Throws:

java.lang.Exception - problem creating the ob or a cancel

binTimes

public static java.util.List binTimes(java.util.List times,
                                      double binRoundTo,
                                      double binWidth)
                               throws visad.VisADException

Bin the times

Parameters:

times - List of times

binRoundTo - round to factor

binWidth - bin size

Returns:

Binned times

Throws:

visad.VisADException - On badness

makePointObs

public static visad.FieldImpl makePointObs(ucar.nc2.dt.PointObsDataset input,
                                           double binRoundTo,
                                           double binWidth)
                                    throws java.lang.Exception

Make point obs

Parameters:

input - the data set

binRoundTo - bin round to

binWidth - time bin size

Returns:

The field

Throws:

java.lang.Exception - On badness

makePointObs

public static visad.FieldImpl makePointObs(ucar.nc2.dt.PointObsDataset input,
                                           double binRoundTo,
                                           double binWidth,
                                           ucar.unidata.geoloc.LatLonRect llr)
                                    throws java.lang.Exception

Make point obs

Parameters:

input - the data set

binRoundTo - bin round to

binWidth - time bin size

llr - bounding box

Returns:

The field

Throws:

java.lang.Exception - On badness

makePointObs

public static visad.FieldImpl makePointObs(ucar.nc2.dt.PointObsDataset input,
                                           double binRoundTo,
                                           double binWidth,
                                           ucar.unidata.geoloc.LatLonRect llr,
                                           boolean sample)
                                    throws java.lang.Exception

Make point obs

Parameters:

input - the data set

binRoundTo - bin round to

binWidth - time bin size

llr - bounding box

sample - If true then just sample the data, i.e., read the first ob

Returns:

The field

Throws:

java.lang.Exception - On badness

makePointObs

public static visad.FieldImpl makePointObs(ucar.nc2.ft.FeatureDatasetPoint input,
                                           DataChoice dataChoice,
                                           double binRoundTo,
                                           double binWidth,
                                           ucar.unidata.geoloc.LatLonRect llr,
                                           DateSelection dateSelection,
                                           boolean sample)
                                    throws java.lang.Exception

Make point obs

Parameters:

input - the data set

binRoundTo - bin round to

binWidth - time bin size

llr - bounding box

dateSelection - the date selection

sample - If true then just sample the data, i.e., read the first ob

Returns:

The field

Throws:

java.lang.Exception - On badness

makePointObs

public static visad.FieldImpl makePointObs(ucar.nc2.ft.FeatureDatasetPoint input,
                                           double binRoundTo,
                                           double binWidth,
                                           ucar.unidata.geoloc.LatLonRect llr,
                                           DateSelection dateSelection,
                                           boolean sample)
                                    throws java.lang.Exception

Make point obs

Parameters:

input - the data set

binRoundTo - bin round to

binWidth - time bin size

llr - bounding box

dateSelection - the date selection

sample - If true then just sample the data, i.e., read the first ob

Returns:

The field

Throws:

java.lang.Exception - On badness

makePointObsWRF

public static visad.FieldImpl makePointObsWRF(ucar.nc2.ft.FeatureDatasetPoint input,
                                              double binRoundTo,
                                              double binWidth,
                                              ucar.unidata.geoloc.LatLonRect llr,
                                              DateSelection dateSelection,
                                              boolean sample)
                                       throws java.lang.Exception

_more_

Parameters:

input - _more_

binRoundTo - _more_

binWidth - _more_

llr - _more_

dateSelection - _more_

sample - _more_

Returns:

_more_

Throws:

java.lang.Exception - _more_

mergeData

public static visad.FieldImpl mergeData(java.util.List datas)
                                 throws visad.VisADException

Merge a List of FieldImpls of point obs into one.

Parameters:

datas - List of FieldImpls of point obs

Returns:

merged FieldImpl

Throws:

visad.VisADException - problem getting the data

makePointOb

public static PointOb makePointOb(visad.georef.EarthLocation el)
                           throws visad.VisADException,
                                  java.rmi.RemoteException

Make a PointOb from an EarthLocation. The time and data are bogus.

Parameters:

el - EarthLocation to use

Returns:

PointOb

Throws:

java.rmi.RemoteException - Java RMI error

visad.VisADException - problem getting the data

makePointOb

public static PointOb makePointOb(visad.georef.EarthLocation el,
                                  visad.DateTime dt)
                           throws visad.VisADException,
                                  java.rmi.RemoteException

Make a PointOb from an EarthLocation. The time and data are bogus.

Parameters:

el - EarthLocation to use

dt - DateTime to use

Returns:

PointOb

Throws:

java.rmi.RemoteException - Java RMI error

visad.VisADException - problem getting the data

makePointOb

public static PointOb makePointOb(visad.georef.EarthLocation el,
                                  visad.DateTime dt,
                                  visad.Tuple tuple)
                           throws visad.VisADException,
                                  java.rmi.RemoteException

Make a point ob

Parameters:

el - earth location

dt - date time

tuple - data

Returns:

the point ob

Throws:

java.rmi.RemoteException - Java RMI error

visad.VisADException - problem getting the data

makePointObs

public static visad.FieldImpl makePointObs(visad.georef.EarthLocation el)
                                    throws visad.VisADException,
                                           java.rmi.RemoteException

Make a FieldImpl of PointOb-s from an EarthLocation. The time and data are bogus.

Parameters:

el - EarthLocation to use

Returns:

FieldImpl of index->po

Throws:

java.rmi.RemoteException - Java RMI error

visad.VisADException - problem getting the data

makePointObs

public static visad.FieldImpl makePointObs(visad.georef.EarthLocation el,
                                           visad.DateTime dt)
                                    throws visad.VisADException,
                                           java.rmi.RemoteException

Make a FieldImpl of PointOb-s from an EarthLocation. The time and data are bogus.

Parameters:

el - EarthLocation to use

dt - DateTime to use

Returns:

FieldImpl of index->po

Throws:

java.rmi.RemoteException - Java RMI error

visad.VisADException - problem getting the data

makePointObs

public static visad.FieldImpl makePointObs(PointOb po)
                                    throws visad.VisADException,
                                           java.rmi.RemoteException

Make a FieldImpl from a PointOb.

Parameters:

po - The ob

Returns:

FieldImpl of index->po

Throws:

java.rmi.RemoteException - Java RMI error

visad.VisADException - problem getting the data

removeTimeDimension

public static visad.FieldImpl removeTimeDimension(visad.FieldImpl pointObs)
                                           throws visad.VisADException,
                                                  java.rmi.RemoteException

Remove the time dimension from a field of point obs, returning just and indexed list of the obs

Parameters:

pointObs - time field of obs

Returns:

indexed list of obs

Throws:

java.rmi.RemoteException - Java RMI error

visad.VisADException - problem getting the data

barnes

public static visad.FieldImpl barnes(visad.FieldImpl pointObs,
                                     visad.RealType type,
                                     float xSpacing,
                                     float ySpacing,
                                     int numPasses)
                              throws visad.VisADException,
                                     java.rmi.RemoteException

Perform an object analysis on a set of point obs

Parameters:

pointObs - Observations to analyze

type - RealTypes of parameter

xSpacing - x spacing (degrees)

ySpacing - y spacing (degrees)

numPasses - number of passes

Returns:

Grid of objectively analyzed data

Throws:

java.rmi.RemoteException - Java RMI error

visad.VisADException - problem getting the data

barnes

public static visad.FieldImpl barnes(visad.FieldImpl pointObs,
                                     visad.RealType type,
                                     float xSpacing,
                                     float ySpacing,
                                     int numPasses,
                                     float gain,
                                     float scaleLength,
                                     au.gov.bom.aifs.osa.analysis.Barnes.AnalysisParameters params,
                                     visad.FieldImpl firstGuessField)
                              throws visad.VisADException,
                                     java.rmi.RemoteException

Perform an object analysis on a set of point obs

Parameters:

pointObs - Observations to analyze

type - RealTypes of parameter

xSpacing - x spacing (degrees)

ySpacing - y spacing (degrees)

numPasses - number of passes

gain - grid convergence/pass

scaleLength - search radius

params - analysis parameters - used to pass back computed vals

firstGuessField - The data to use for a first guess. May be null.

Returns:

Grid of objectively analyzed data

Throws:

java.rmi.RemoteException - Java RMI error

visad.VisADException - problem getting the data

barnesOneTime

public static visad.FlatField barnesOneTime(visad.FieldImpl pointObs,
                                            visad.RealType type,
                                            float xSpacing,
                                            float ySpacing,
                                            int numPasses)
                                     throws visad.VisADException,
                                            java.rmi.RemoteException

Do the analysis on the single time. Should be of the structure: (index -> PointOb)

Parameters:

pointObs - Observations to analyze

type - RealTypes of parameter

xSpacing - x spacing (degrees)

ySpacing - y spacing (degrees)

numPasses - number of passes

Returns:

Grid of objectively analyzed data

Throws:

java.rmi.RemoteException - Java RMI error

visad.VisADException - problem getting the data

barnesOneTime

public static visad.FlatField barnesOneTime(visad.FieldImpl pointObs,
                                            visad.RealType type,
                                            float xSpacing,
                                            float ySpacing,
                                            int numPasses,
                                            float gain,
                                            float scaleLength,
                                            au.gov.bom.aifs.osa.analysis.Barnes.AnalysisParameters params)
                                     throws visad.VisADException,
                                            java.rmi.RemoteException

Do the analysis on the single time. Should be of the structure: (index -> PointOb)

Parameters:

pointObs - Observations to analyze

type - RealTypes of parameter

xSpacing - x spacing (degrees)

ySpacing - y spacing (degrees)

numPasses - number of passes

gain - grid convergence/pass

scaleLength - search radius

params - analysis parameters - used to pass back computed vals

Returns:

Grid of objectively analyzed data

Throws:

java.rmi.RemoteException - Java RMI error

visad.VisADException - problem getting the data

barnesOneTime

public static visad.FlatField barnesOneTime(visad.FieldImpl pointObs,
                                            visad.RealType type,
                                            float xSpacing,
                                            float ySpacing,
                                            int numPasses,
                                            float gain,
                                            float scaleLength,
                                            au.gov.bom.aifs.osa.analysis.Barnes.AnalysisParameters params,
                                            visad.FlatField firstGuess)
                                     throws visad.VisADException,
                                            java.rmi.RemoteException

Do the analysis on the single time. Should be of the structure: (index -> PointOb)

Parameters:

pointObs - Observations to analyze

type - RealTypes of parameter

xSpacing - x spacing (degrees)

ySpacing - y spacing (degrees)

numPasses - number of passes

gain - grid convergence/pass

scaleLength - search radius

params - analysis parameters - used to pass back computed vals

firstGuess - analysis parameters - used to pass back computed vals

Returns:

Grid of objectively analyzed data

Throws:

java.rmi.RemoteException - Java RMI error

visad.VisADException - problem getting the data

extractParameter

public static visad.FieldImpl extractParameter(visad.FieldImpl obs,
                                               java.lang.String paramName)
                                        throws visad.VisADException,
                                               java.rmi.RemoteException

Extract the parameter from some point obs

Parameters:

obs - Field of point obs

paramName - name of the parameter to extract

Returns:

new FieldImpl where the data for each Point ob is just the param

Throws:

java.rmi.RemoteException - Java RMI exception

visad.VisADException - problem extracting parameter

extractParameter

public static visad.FieldImpl extractParameter(visad.FieldImpl obs,
                                               visad.RealType parameter)
                                        throws visad.VisADException,
                                               java.rmi.RemoteException

Extract the parameter from some point obs

Parameters:

obs - Field of point obs

parameter - parameter to extract

Returns:

new FieldImpl where the data for each Point ob is just the param

Throws:

java.rmi.RemoteException - Java RMI exception

visad.VisADException - problem extracting parameter

getBoundingBox

public static double[] getBoundingBox(visad.FieldImpl pointObs)
                               throws visad.VisADException,
                                      java.rmi.RemoteException

Get the bounding box of the given obs

Parameters:

pointObs - the obs

Returns:

bbox of the given time field- { minY, minX, maxY, maxX };

Throws:

java.rmi.RemoteException - On badness

visad.VisADException - On badness

getBoundingBoxOneTime

public static double[] getBoundingBoxOneTime(visad.FieldImpl pointObs)
                                      throws visad.VisADException,
                                             java.rmi.RemoteException

Get the bounding box of the given obs

Parameters:

pointObs - the obs

Returns:

bbox of the given time field- { minY, minX, maxY, maxX };

Throws:

java.rmi.RemoteException - On badness

visad.VisADException - On badness

heatIndex

public static double heatIndex(double T,
                               double RH)

Create heatIndex from temperature and relative humidity.

Parameters:

T - temperature (F)

RH - wind direction (%)

windChill

public static double windChill(double speed,
                               double T)

WC = 35.74 + 0.6215 * (T - 273.15) - 35.75 * (WS)**0.16 + 0.4275 * ( T - 273.15) * (WS)**0.16

Parameters:

speed - wind speed (mph)

T - temperature(F)

relativeHumidity

public static double relativeHumidity(double T,
                                      double TD)

100*(EXP((17.625*TD)/(243.04+TD))/EXP((17.625*T)/(243.04+T)))

Parameters:

T - temperature (Celsius)

TD - dewPoint(Celsius)