

<li> 'Yes' - This option assumes that there is enough RAM to stack the data sets.</li>
<li> 'No' - A data-set is loaded at a time to compute the transformation matrix.</li>

</ul>

<li>pca_opts.precision - Options are 'Double' and 'Single'.</li>

<li>pca_opts.tolerance - Enter stopping tolerance. Default is 1e-4.</li>

<li> pca_opts.max_iter - Enter maximum number of iterations to use.</li>

</ul>

</ul>

<li> backReconType - Options are 1, 2 and 3. 

<ul>
<li> 1 - Regular </li>
<li> 