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<H3><A NAME="SECTION001021100000000000000"> </A>
<A NAME="x-using-image-channels"> </A>
<BR>
Using Image Channels
</H3>
Images can be loaded into any of the different image channels (memories)
of a display window, except the overlay channel.
For data cubes the different planes can be loaded into different channels and
then combined in their display (RGB mode) or viewed individually by blinking
between the different channels.
<BR>
The image channels are referenced by numbers 0, 1, ... . A typical
command sequence would be:
<P>
<BLOCKQUOTE>
<TT>LOAD/IMAGE galaxy 0 </TT>! load an image in channel 0<TT>
<BR>
LOAD/LUT heat </TT>! load a colour look-up table <TT>
<BR>
DISPLAY/LUT </TT>! display a LUT bar at the bottom of the window</BLOCKQUOTE>
<BR>
The most important commands associated with the image channels
are: <BR>
<BR>
<TT>LOAD/IMAGE</TT> - <I>load an image into image channel</I> <BR>
<TT>GET/IMAGE</TT> - <I>read an image from the image channel</I> <BR>
<TT>GET/CURSOR P5=w</TT> - <I>read pixel values of displayed image using a
zoom window</I> <BR>
<TT>VIEW/IMAGE</TT> - <I>explore an image already loaded</I> <BR>
<TT>DISPLAY/CHANNEL</TT> - <I>display image in selected channel </I>
<BR>
<TT>CLEAR/CHANNEL</TT> - <I>erase data in an image channel</I> <BR>
<TT>SCROLL/CHANNEL</TT> - <I>scroll image loaded in channel </I>
<BR>
<TT>SHOW/CHANNEL</TT> - <I>show status of image channel </I>
<BR>
<TT>BLINK/CHANNEL</TT> - <I>blink between different channels</I>
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<ADDRESS>
<I>Petra Nass</I>
<BR><I>1999-06-09</I>
</ADDRESS>
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