Package noaa.coastwatch.render.feature

Class ColocatedPointFeatureSource

java.lang.Object

noaa.coastwatch.render.feature.AbstractFeatureSource

noaa.coastwatch.render.feature.PointFeatureSource

noaa.coastwatch.render.feature.ColocatedPointFeatureSource

All Implemented Interfaces:

Iterable<Feature>, FeatureSource

public class ColocatedPointFeatureSource
extends PointFeatureSource

The ColocatedPointFeatureSource class combines the point features from a source with colocated values from a set of grids. For example if each point feature in the source has attributes named:

• observation_time
• windspeed

and the grids were named "sst" and "cloud", then the point data supplied by this class would have attributes named:

• observation_time
• windspeed
• GRID_sst
• GRID_cloud

where the sst and cloud data values are taken from the grids at the geolocation of the point data. The "GRID_" extension to the grid names prevents name collisions, if the attributes and grids happen to have some of the same names.

Since:

3.3.2

Author:

Peter Hollemans

Field Summary

Fields

Modifier and Type	Field	Description
static final Map<Class<?>,Class<?>>	primitiveToWrapperMap	The mapping form primitive to wrapper class.

Fields inherited from class noaa.coastwatch.render.feature.AbstractFeatureSource

area, featureList

Constructor Summary

Constructors

Constructor	Description
ColocatedPointFeatureSource(PointFeatureSource source, EarthTransform trans, List<Grid> gridList)	Creates a new colocated source using the specified source and grids.

Method Summary

Modifier and Type	Method	Description
static void	main(String[] argv)	Tests this class.
protected void	select()	Selects a set of features from the data source based on the current area.

Methods inherited from class noaa.coastwatch.render.feature.PointFeatureSource

render, render

Methods inherited from class noaa.coastwatch.render.feature.AbstractFeatureSource

getArea, getAttributeCount, getAttributeNameMap, getAttributes, getFilter, iterator, select, setAttributes, setFilter

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Details

primitiveToWrapperMap

public static final Map<Class<?>,Class<?>> primitiveToWrapperMap

The mapping form primitive to wrapper class.

Constructor Details

ColocatedPointFeatureSource

public ColocatedPointFeatureSource(PointFeatureSource source,
 EarthTransform trans,
 List<Grid> gridList)

Creates a new colocated source using the specified source and grids.

Parameters:

source - the point source to supply point feature data.

trans - the earth transform for the grid data.

gridList - the list of grids to append data values to the point feature attributes.

Method Details

select

protected void select()
               throws IOException

Description copied from class: AbstractFeatureSource

Selects a set of features from the data source based on the current area.

Specified by:

select in class AbstractFeatureSource

Throws:

IOException - if an error occurred accessing the data source.

main

public static void main(String[] argv)
                 throws Exception

Tests this class.

Parameters:

argv - the array of command line parameters.

Throws:

Exception