ucar.nc2.ft.TrajectoryFeature Maven / Gradle / Ivy

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/*
 * Copyright 1998-2014 University Corporation for Atmospheric Research/Unidata
 *
 *   Portions of this software were developed by the Unidata Program at the
 *   University Corporation for Atmospheric Research.
 *
 *   Access and use of this software shall impose the following obligations
 *   and understandings on the user. The user is granted the right, without
 *   any fee or cost, to use, copy, modify, alter, enhance and distribute
 *   this software, and any derivative works thereof, and its supporting
 *   documentation for any purpose whatsoever, provided that this entire
 *   notice appears in all copies of the software, derivative works and
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 */
package ucar.nc2.ft;

import ucar.ma2.StructureData;
import ucar.nc2.units.DateRange;

import java.io.IOException;

/**
 * A set of observations along a 1 dimensional path, connected in space and time.
 * The observations are ordered in time (in other words, the time dimension must
 * increase monotonically along the trajectory).
 *
 * @author edavis
 * @author caron
 */
public interface TrajectoryFeature extends PointFeatureCollection {

  /**
    * The number of points along the trajectory. May not be known until after iterating through the collection.
    * @return number of points along the trajectory, or -1 if not known.
    */
   public int size();

  /**
   * DateRange for the points along the trajectory. May not be known until after iterating through the collection.
   * @return stating date for the trajectory, or null if not known
   */
  public DateRange getDateRange();

  /**
   * BoundingBox for the trajectory. May not be known until after iterating through the collection.
   * @return BoundingBox for the trajectory, or null if not known.
   */
  public ucar.unidata.geoloc.LatLonRect getBoundingBox();

  /**
   * The actual data of just this feature.
   * @return the actual data of this feature.
   * @throws java.io.IOException on i/o error
   */
  public StructureData getFeatureData() throws IOException;

}