e optional
<code>GUI</code> parameter to FALSE, and either providing the desired
processing argument in the call to the function, or providing a
previously saved <code>opts_file</code> specifying the path to a JSON
Options file previously saved through the GUI. This allows to exploit
<a href="https://docs.ropensci.org/MODIStsp">MODIStsp</a> functionalities within generic <code>R</code>
processing scripts.</p>
<div class="section level2">
<h2 id="specifying-the-processing-parameters-in-the-function-call">
<i