com.esri.arcgis.geoprocessing.tools.spatialanalysttools
Class HillShade

java.lang.Object
  com.esri.arcgis.geoprocessing.AbstractGPTool
      com.esri.arcgis.geoprocessing.tools.spatialanalysttools.HillShade

All Implemented Interfaces:

GPTool

public class HillShade
extends AbstractGPTool

Creates a shaded relief from a surface raster by considering the illumination source angle and shadows. The Hillshade tool is contained in the Spatial Analyst Tools tool box.

Usage tips:

• The Hillshade tool creates a shaded relief raster from a raster. The illumination source is considered to be at infinity.
• The hillshade raster has an integer value range of 0 to 255.
• Two types of shaded relief rasters can be output. If the Model shadows option is disabled (unchecked), the output raster only considers local illumination angle. If it is enabled (checked), the output raster considers the effects of both local illumination angle and shadow.
• The analysis of shadows is done by considering the effects of the local horizon at each cell. Raster cells in shadow are assigned a value of zero.
• To create a raster of the shadow areas only, use the , , or tool to separate the value zero from the other hillshade values. Hillshade must have had the Model shadows option enabled.
• If the input raster is in a spherical coordinate system, such as decimal degrees, the resulting hillshade may look peculiar. This is due to the difference in measure between the horizontal ground units and the elevation z units. Since the length of a degree of longitude changes with latitude, you will need to specify an appropriate z-factor for that latitude. If your x,y units are decimal degrees and your z units are meters, some appropriate z-factors for particular latitudes are: Latitude Z-factor 0 0.00000898 10 0.00000912 20 0.00000956 30 0.00001036 40 0.00001171 50 0.00001395 60 0.00001792 70 0.00002619 80 0.00005156
• You can create dramatic three-dimensional views of the hillshaded surface by draping the output raster using ArcGIS ArcScene.

Field Summary

Fields inherited from class com.esri.arcgis.geoprocessing.AbstractGPTool

vals

Constructor Summary

HillShade()
Creates the Hillshade tool with defaults.

HillShade(Object inRaster, Object outRaster)
Creates the Hillshade tool with the required parameters.

Method Summary

double	getAltitude() Returns the Altitude parameter of this tool .
double	getAzimuth() Returns the Azimuth parameter of this tool .
Object	getInRaster() Returns the Input raster parameter of this tool .
String	getModelShadows() Returns the Model shadows parameter of this tool .
Object	getOutRaster() Returns the Output raster parameter of this tool .
String	getToolboxAlias() Returns the alias of the tool box containing this tool.
String	getToolboxName() Returns the name of the tool box containing this tool.
String	getToolName() Returns the name of this tool.
double	getZFactor() Returns the Z factor parameter of this tool .
void	setAltitude(double altitude) Sets the Altitude parameter of this tool .
void	setAzimuth(double azimuth) Sets the Azimuth parameter of this tool .
void	setInRaster(Object inRaster) Sets the Input raster parameter of this tool .
void	setModelShadows(String modelShadows) Sets the Model shadows parameter of this tool .
void	setOutRaster(Object outRaster) Sets the Output raster parameter of this tool .
void	setZFactor(double zFactor) Sets the Z factor parameter of this tool .

Methods inherited from class com.esri.arcgis.geoprocessing.AbstractGPTool

getParameterValues, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

HillShade

public HillShade()

Creates the Hillshade tool with defaults.

Initializes the array of tool parameters with the default values specified when the tool was created.

HillShade

public HillShade(Object inRaster,
                 Object outRaster)

Creates the Hillshade tool with the required parameters.

Initializes the array of tool parameters with the values as specified for the required parameters and with the default values for the other parameters.

Parameters:

inRaster - the input surface raster.

outRaster - the output hillshade raster. the hillshade raster has an integer value range of 0 to 255.

Method Detail

getInRaster

public Object getInRaster()

Returns the Input raster parameter of this tool . This parameter is the input surface raster. This is a required parameter.

Returns:

the Input raster

setInRaster

public void setInRaster(Object inRaster)

Sets the Input raster parameter of this tool . This parameter is the input surface raster. This is a required parameter.

Parameters:

inRaster - the input surface raster.

getOutRaster

public Object getOutRaster()

Returns the Output raster parameter of this tool . This parameter is the output hillshade raster. the hillshade raster has an integer value range of 0 to 255. This is a required parameter.

Returns:

the Output raster

setOutRaster

public void setOutRaster(Object outRaster)

Sets the Output raster parameter of this tool . This parameter is the output hillshade raster. the hillshade raster has an integer value range of 0 to 255. This is a required parameter.

Parameters:

outRaster - the output hillshade raster. the hillshade raster has an integer value range of 0 to 255.

getAzimuth

public double getAzimuth()

Returns the Azimuth parameter of this tool . This parameter is azimuth angle of the light source. the azimuth is expressed in positive degrees from 0 to 360, measured clockwise from north. the default is 315 degrees. This is an optional parameter.

Returns:

the Azimuth

setAzimuth

public void setAzimuth(double azimuth)

Sets the Azimuth parameter of this tool . This parameter is azimuth angle of the light source. the azimuth is expressed in positive degrees from 0 to 360, measured clockwise from north. the default is 315 degrees. This is an optional parameter.

Parameters:

azimuth - azimuth angle of the light source. the azimuth is expressed in positive degrees from 0 to 360, measured clockwise from north. the default is 315 degrees.

getAltitude

public double getAltitude()

Returns the Altitude parameter of this tool . This parameter is altitude angle of the light source above the horizon. the altitude is expressed in positive degrees, with 0 degrees at the horizon and 90 degrees directly overhead. the default is 45 degrees. This is an optional parameter.

Returns:

the Altitude

setAltitude

public void setAltitude(double altitude)

Sets the Altitude parameter of this tool . This parameter is altitude angle of the light source above the horizon. the altitude is expressed in positive degrees, with 0 degrees at the horizon and 90 degrees directly overhead. the default is 45 degrees. This is an optional parameter.

Parameters:

altitude - altitude angle of the light source above the horizon. the altitude is expressed in positive degrees, with 0 degrees at the horizon and 90 degrees directly overhead. the default is 45 degrees.

getModelShadows

public String getModelShadows()

Returns the Model shadows parameter of this tool . This parameter is type of shaded relief to be generated. This is an optional parameter.

Returns:

the Model shadows

setModelShadows

public void setModelShadows(String modelShadows)

Sets the Model shadows parameter of this tool . This parameter is type of shaded relief to be generated. This is an optional parameter.

Parameters:

modelShadows - type of shaded relief to be generated.

getZFactor

public double getZFactor()

Returns the Z factor parameter of this tool . This parameter is number of ground x,y units in one surface z unit. the z-factor adjusts the units of measure for the z units when they are different from the x,y units of the input surface. The z-values of the input surface are multiplied by the z-factor when calculating the final output surface. if the x,y units and z units are in the same units of measure, the z-factor is 1. This is the default. if the x,y units and z units are in different units of measure, the z-factor must be set to the appropriate factor, or the results will be incorrect. For example, if your z units are feet and your x,y units are meters, you would use a z-factor of 0.3048 to convert your z units from feet to meters (1 foot = 0.3048 meter). This is an optional parameter.

Returns:

the Z factor

setZFactor

public void setZFactor(double zFactor)

Sets the Z factor parameter of this tool . This parameter is number of ground x,y units in one surface z unit. the z-factor adjusts the units of measure for the z units when they are different from the x,y units of the input surface. The z-values of the input surface are multiplied by the z-factor when calculating the final output surface. if the x,y units and z units are in the same units of measure, the z-factor is 1. This is the default. if the x,y units and z units are in different units of measure, the z-factor must be set to the appropriate factor, or the results will be incorrect. For example, if your z units are feet and your x,y units are meters, you would use a z-factor of 0.3048 to convert your z units from feet to meters (1 foot = 0.3048 meter). This is an optional parameter.

Parameters:

zFactor - number of ground x,y units in one surface z unit. the z-factor adjusts the units of measure for the z units when they are different from the x,y units of the input surface. The z-values of the input surface are multiplied by the z-factor when calculating the final output surface. if the x,y units and z units are in the same units of measure, the z-factor is 1. This is the default. if the x,y units and z units are in different units of measure, the z-factor must be set to the appropriate factor, or the results will be incorrect. For example, if your z units are feet and your x,y units are meters, you would use a z-factor of 0.3048 to convert your z units from feet to meters (1 foot = 0.3048 meter).

getToolName

public String getToolName()

Returns the name of this tool.

Returns:

the tool name

getToolboxName

public String getToolboxName()

Returns the name of the tool box containing this tool.

Returns:

the tool box name

getToolboxAlias

public String getToolboxAlias()

Returns the alias of the tool box containing this tool.

Returns:

the tool box alias