Parent Topic: <A href="http://www.pcigeomatics.com/cgi-bin/pcihlp/MIAVHRR|PARAMETERS">PARAMETERS</a><hr>
<H4>DBOC</H4>
Specifies the image channels to receive output from tape.
<P>
<PRE>
 EASI&gt;DBOC=i,j,...,p
 EASI&gt;DBOC=                  | defaults to newly created file channels
</PRE>
<UL>
<LI> The number of values in DBOC must be equal to the number of
channels specified by MTIC. 
<LI> Up to 5 channels can be specified. 
<LI> Ranges of channels can be specified with negatives values. For
example: {1,-4} is internally expanded to {1,2,3,4}. 
<LI> DBOC must be set if FILE exists. 
<LI> If FILE is created by MIAVHRR, DBOC will be reset with the
channel numbers of the created file. 
<LI> The output channels can be of any type, but signed 16-bit integer
is recommended because AVHRR pixel values are 10-bit in size
(with values ranging from 0 to 1023). If an output channel is
8-bit (with values ranging from 0 to 255), then 10-bit AVHRR
pixel values will be scaled to fit into that output channel. This
scaling is achieved by dividing each 10-bit pixel value by 4. In
this instance the text segment LUT associated with this 8-bit
output channel will be set. The LUT maps 10-bit pixel values to
8-bit pixel values. A warning message indicating that scaling
will occur is issued for each output channel which is 8-bit. Note
that text segment LUTs are labelled by AVHRR channel number, not
output channel number. For example, if AVHRR channel 3 is read
into output channel 8, then LUT number 3 will be created in the
text segment. 
</UL>
<hr>
Parent Topic: <A href="http://www.pcigeomatics.com/cgi-bin/pcihlp/MIAVHRR|PARAMETERS">PARAMETERS</a><br>
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