com.graphhopper.reader.dem

Class AbstractTiffElevationProvider

java.lang.Object

com.graphhopper.reader.dem.AbstractElevationProvider

com.graphhopper.reader.dem.AbstractTiffElevationProvider

All Implemented Interfaces:

ElevationProvider

Direct Known Subclasses:

CGIARProvider, GMTEDProvider

public abstract class AbstractTiffElevationProvider
extends AbstractElevationProvider

Provides basic methods that are usually used in an ElevationProvider that reads tiff files.

Author:

Robin Boldt

Field Summary

Fields inherited from interface com.graphhopper.reader.dem.ElevationProvider

NOOP

Constructor Summary

Constructors

Constructor and Description
AbstractTiffElevationProvider(String baseUrl, String cacheDir, String downloaderName, int width, int height, int latDegree, int lonDegree)

Method Summary

Modifier and Type	Method and Description
double	getEle(double lat, double lon)
void	release() Release resources.
void	setAutoRemoveTemporaryFiles(boolean autoRemoveTemporary) Creating temporary files can take a long time as we need to unpack tiff as well as to fill our DataAccess object, so this option can be used to disable the default clear mechanism via specifying 'false'.

Methods inherited from class com.graphhopper.reader.dem.AbstractElevationProvider

getCacheDir, getDirectory, setBaseURL, setCalcMean, setDAType, setDownloader

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractTiffElevationProvider

public AbstractTiffElevationProvider(String baseUrl,
                                     String cacheDir,
                                     String downloaderName,
                                     int width,
                                     int height,
                                     int latDegree,
                                     int lonDegree)

Method Detail

release

public void release()

Description copied from interface: ElevationProvider

Release resources.

getEle

public double getEle(double lat,
                     double lon)

Returns:

returns the height in meters or Double.NaN if invalid

setAutoRemoveTemporaryFiles

public void setAutoRemoveTemporaryFiles(boolean autoRemoveTemporary)

Creating temporary files can take a long time as we need to unpack tiff as well as to fill our DataAccess object, so this option can be used to disable the default clear mechanism via specifying 'false'.

Specified by:

setAutoRemoveTemporaryFiles in interface ElevationProvider

Overrides:

setAutoRemoveTemporaryFiles in class AbstractElevationProvider