t they do, including fast transformations, random ensembles, and convolution, see the <a href="http://www.cs.ubc.ca/labs/scl/spot/operators.html">"Index of Operators"</a>.</p><p class="footer"><br>
      Published with MATLAB&reg; 7.14<br></p></div><!--
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%% A quick guide to Spot 
% Using explicit matrices is not practical for some very large problems.
% Instead, we can use Spot operators. A Spot operator represents a matrix,
% and can be treated in a similar way, but it doesn't rely 