Package org.orekit.utils

Class InterpolationTableLoader

java.lang.Object

org.orekit.utils.InterpolationTableLoader

All Implemented Interfaces:

DataLoader

public class InterpolationTableLoader
extends Object
implements DataLoader

Used to read an interpolation table from a data file.

Author:

Thomas Neidhart

Constructor Summary

Constructors

Constructor	Description
InterpolationTableLoader()

Method Summary

Modifier and Type	Method	Description
double[]	getAbscissaGrid()	Returns a copy of the abscissa grid for the interpolation function.
double[]	getOrdinateGrid()	Returns a copy of the ordinate grid for the interpolation function.
double[][]	getValuesSamples()	Returns a copy of the values samples for the interpolation function.
void	loadData(InputStream input, String name)	Loads an bi-variate interpolation table from the given InputStream.
boolean	stillAcceptsData()	Check if the loader still accepts new data.

Methods inherited from class java.lang.Object

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

Constructor Detail

InterpolationTableLoader

public InterpolationTableLoader()

Method Detail

getAbscissaGrid

public double[] getAbscissaGrid()

Returns a copy of the abscissa grid for the interpolation function.

Returns:

the abscissa grid for the interpolation function, or null if the file could not be read

getOrdinateGrid

public double[] getOrdinateGrid()

Returns a copy of the ordinate grid for the interpolation function.

Returns:

the ordinate grid for the interpolation function, or null if the file could not be read

getValuesSamples

public double[][] getValuesSamples()

Returns a copy of the values samples for the interpolation function.

Returns:

the values samples for the interpolation function, or null if the file could not be read

stillAcceptsData

public boolean stillAcceptsData()

Check if the loader still accepts new data.

This method is used to speed up data loading by interrupting crawling the data sets as soon as a loader has found the data it was waiting for. For loaders that can merge data from any number of sources (for example JPL ephemerides or Earth Orientation Parameters that are split among several files), this method should always return true to make sure no data is left over.

Specified by:

stillAcceptsData in interface DataLoader

Returns:

true while the loader still accepts new data

loadData

public void loadData(InputStream input,
                     String name)
              throws IOException,
                     ParseException,
                     OrekitException

Loads an bi-variate interpolation table from the given InputStream. The format of the table is as follows (number of rows/columns can be extended):

  Table: tableName

      | 0.0 |  60.0 |  66.0
  -------------------------
    0 | 0.0 | 0.003 | 0.006
  500 | 0.0 | 0.003 | 0.006
 

Specified by:

loadData in interface DataLoader

Parameters:

input - the input stream to read data from

name - the name of the input file

Throws:

IOException - if data can't be read

ParseException - if data can't be parsed

OrekitException - if some data is missing or unexpected data is encountered