org.geotools.styling
Interface ChannelSelection

All Superinterfaces:

GTComponent

All Known Implementing Classes:

ChannelSelectionImpl

public interface ChannelSelection

extends GTComponent

The ChannelSelection element specifies the false-color channel selection for a multi-spectral raster source (such as a multi-band satellite-imagery source). It is defined as:

 <xs:element name="ChannelSelection">
 <xs:complexType>
     <xs:choice>
       <xs:sequence>
         <xs:element ref="sld:RedChannel"/>
         <xs:element ref="sld:GreenChannel"/>
         <xs:element ref="sld:BlueChannel"/>
       </xs:sequence>
       <xs:element ref="sld:GrayChannel"/>
     </xs:choice>
   </xs:complexType>
 </xs:element>
 <xs:element name="RedChannel" type="sld:SelectedChannelType"/>
 <xs:element name="GreenChannel" type="sld:SelectedChannelType"/>
 <xs:element name="BlueChannel" type="sld:SelectedChannelType"/>
 <xs:element name="GrayChannel" type="sld:SelectedChannelType"/>
 

Either a channel may be selected to display in each of red, green, and blue, or a single channel may be selected to display in grayscale. (The spelling ?gray? is used since it seems to be more common on the Web than ?grey? by a ratio of about 3:1.) Contrast enhancement may be applied to each channel in isolation. Channels are identified by a system and data-dependent character identifier. Commonly, channels will be labelled as ?1?, ?2?, etc.

Author:

iant

Method Summary

SelectedChannelType	getGrayChannel() Get the gray channel to be used
SelectedChannelType[]	getRGBChannels() get the RGB channels to be used
SelectedChannelType[]	getSelectedChannels() get the channels to be used
void	setGrayChannel(SelectedChannelType gray) Set the gray channel to be used
void	setRGBChannels(SelectedChannelType[] channels) set the RGB channels to be used
void	setRGBChannels(SelectedChannelType red, SelectedChannelType green, SelectedChannelType blue) set the RGB channels to be used
void	setSelectedChannels(SelectedChannelType[] channels) set the channels to be used

Methods inherited from interface org.geotools.event.GTComponent

changed, getNote, getParent, removed, setNote

Method Detail

setRGBChannels

public void setRGBChannels(SelectedChannelType red,
                           SelectedChannelType green,
                           SelectedChannelType blue)

set the RGB channels to be used

Parameters:

red - the red channel

green - the green channel

blue - the blue channel

setRGBChannels

public void setRGBChannels(SelectedChannelType[] channels)

set the RGB channels to be used

Parameters:

channels - array of channels in RGB order

getRGBChannels

public SelectedChannelType[] getRGBChannels()

get the RGB channels to be used

Returns:

array of channels in RGB order

setGrayChannel

public void setGrayChannel(SelectedChannelType gray)

Set the gray channel to be used

Parameters:

gray - the gray channel

getGrayChannel

public SelectedChannelType getGrayChannel()

Get the gray channel to be used

Returns:

the gray channel

setSelectedChannels

public void setSelectedChannels(SelectedChannelType[] channels)

set the channels to be used

Parameters:

channels - array of channels

getSelectedChannels

public SelectedChannelType[] getSelectedChannels()

get the channels to be used

Returns:

array of channels