org.opentripplanner.graph_builder.module.ned

Class GeotiffGridCoverageFactoryImpl

java.lang.Object

org.opentripplanner.graph_builder.module.ned.GeotiffGridCoverageFactoryImpl

All Implemented Interfaces:

ElevationGridCoverageFactory

public class GeotiffGridCoverageFactoryImpl
extends Object
implements ElevationGridCoverageFactory

Implementation of ElevationGridCoverageFactory for Geotiff data.

Constructor Summary

Constructors

Constructor and Description
GeotiffGridCoverageFactoryImpl(File path)

Method Summary

Modifier and Type	Method and Description
void	checkInputs()
void	fetchData(Graph graph) Nothing to do here.
org.geotools.coverage.grid.GridCoverage2D	getGridCoverage() Wraps the underlying grid coverage instance with an interpolator that can be used in a specific thread.
org.geotools.coverage.grid.GridCoverage2D	getUninterpolatedGridCoverage() Lazy-creates a GridCoverage2D instance by loading the specific elevation file into memory.

Methods inherited from class java.lang.Object

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

Constructor Detail

GeotiffGridCoverageFactoryImpl

public GeotiffGridCoverageFactoryImpl(File path)

Method Detail

getGridCoverage

public org.geotools.coverage.grid.GridCoverage2D getGridCoverage()

Wraps the underlying grid coverage instance with an interpolator that can be used in a specific thread.

Specified by:

getGridCoverage in interface ElevationGridCoverageFactory

getUninterpolatedGridCoverage

public org.geotools.coverage.grid.GridCoverage2D getUninterpolatedGridCoverage()

Lazy-creates a GridCoverage2D instance by loading the specific elevation file into memory. During a refactor in the year 2020, the code at one point was written such that each coverage instance was created and wrapped in the Interpolator2D interpolator for each thread to use. However, benchmarking showed that this caused longer run times which is likely due to too much memory competing for a slot in the processor cache.

checkInputs

public void checkInputs()

Specified by:

checkInputs in interface ElevationGridCoverageFactory

fetchData

public void fetchData(Graph graph)

Nothing to do here. File should already exist on computer.

Specified by:

fetchData in interface ElevationGridCoverageFactory