Greetings<div><br></div><div>I'm a ORFEO TOolbox user and I realized, through a few messages from Antonio and Hamish, that GRASS has an addon module, called <a href="http://i.pr">i.pr</a>, that performs a few classification methodologies.</div>
<div><br></div><div>The i.pr.training uses a interactive (based on Xterminals) and a non-interactive based on (citing Description)</div><div>The second option for generating the training sample file can be done
non-interactively. This is done by specifying a GRASS sites file. This file
should represent the locations of training samples and ought to have been
previously generated either by digitising (<em><a href="file:///C:/Data/GISDataBase/i.pr/i.pr_training/v.digit">v.digit</a></em>) or else by <em><a href="file:///C:/Data/GISDataBase/i.pr/i.pr_training/v.in.ascii">v.in.ascii</a></em>. Features will be extracted for these
locations in a similar fashion as previously described. The class will be
assigned to the examples based on the information stored in the sites file.</div><div><br></div><div><br></div><div>What is a GRASS sites file? How can I obtain this?</div><div><br>Thanks</div><div><br></div><div>best regards,</div>
<div>Luisa</div><div><br></div>