Triton Isis User Manual
Page 140
June 2004 Isis® Sonar User's Manual, Volume1
126
monitors side-by-side, providing a horizontal display area approximately 5000
pixels wide. But for the purposes of this discussion, 1000 will be used.
In order to display, say, 20,000 sonar samples in a window 1000 pixels wide,
some kind of downsampling must be done. In this example, only 20 samples
would be available to Isis for representing the entire spectrum of 20,000 sonar
samples (that is, 20,000 1000). From these 20 samples Isis must process digital
values to create a single display pixel. As Figure 8-5 and Table 8-3 show, six
methods of downsampling are available in Isis version 4.90 and later.
Figure 8-5: Downsample dialog box
Chapter 8: Using the View Menu