<div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Hello, Margherita! I don't know about limitations of raster or memory sizes in GRASS, but the first thought was to cut raster into parts, vectorize them and then patch into new vector map. Of course, with automatic cutting, not manual :)<br><br></div><div class="gmail_extra"><br><div class="gmail_quote">2015-04-24 10:54 GMT+03:00 Margherita Di Leo <span dir="ltr"><<a href="mailto:diregola@gmail.com" target="_blank">diregola@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi,<div><br></div><div>I'm trying to vectorize a very large file</div><div><br></div><div><div> | Type of Map: raster Number of Categories: 255 |</div><div> | Data Type: CELL |</div><div> | Rows: 88537 |</div><div> | Columns: 54410 |</div><div> | Total Cells: 4817298170 |</div><div> | Projection: Lambert Azimuthal Equal Area |</div><div> | N: 4239550 S: 2026125 Res: 25 |</div><div> | E: 4284650 W: 2924400 Res: 25 |</div><div> | Range of data: min = 11 max = 255 </div><div><br></div><div>using GRASS 7.1.svn (r65027)</div><div><br></div><div><div>:~ > r.to.vect input=raster_tty output=vector_tty type=area </div><div>Extracting areas...</div><div> 100%</div><div>Writing areas...</div><div> 100%</div><div>Building topology for vector map <vector_tty@assessment>...</div><div>Registering primitives...</div><div>Killed0000</div><div><br></div><div>what does this mean?</div><div><br></div><div>:~ > v.build vector_tty</div><div>WARNING: Coor file of vector map <vector_tty@assessment> is larger than it</div><div> should be (2403996039 bytes excess)</div><div>Building topology for vector map <vector_tty@assessment>...</div><div>Registering primitives...</div><div>Killed0000</div></div><div><br></div><div>Question about "larger that it should be": What is this limitation? I guess is related to the specs of my laptop?</div><div><br></div><div>Thanks,</div>-- <br><div><div dir="ltr"><div><font color="#666666">Best regards,</font></div><div><font color="#666666"><br></font></div><div><font color="#666666">Dr. Margherita DI LEO </font></div><div><span style="color:rgb(102,102,102);font-family:arial;font-size:small">Scientific / technical project officer</span><br></div><div><font color="#666666"><br></font></div><div><font color="#666666">European Commission - DG JRC </font></div><div><font color="#666666">Institute for Environment and Sustainability (IES)</font></div><div><font color="#666666">Via Fermi, 2749</font></div><div><font color="#666666">I-21027 Ispra (VA) - Italy - TP 261</font></div><div><font color="#666666"> </font></div><div><font color="#666666">Tel. +39 0332 78 3600 </font></div><div><font color="#666666"><a href="mailto:margherita.di-leo@jrc.ec.europa.eu" target="_blank">margherita.di-leo@jrc.ec.europa.eu</a></font></div><div><font color="#666666"><br></font></div><div><font color="#666666">Disclaimer: The views expressed are purely those of the writer and may not in any circumstance be regarded as stating an official position of the European Commission.</font></div></div></div>
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