<div dir="ltr">Ok, sì, devi farlo in più passaggi è vero. In QGIS tutte le operazioni di Processing generano un nuovo dato, non modificano mai il dato originale, e normalmente creano campi aggiuntivi invece di modificare gli esistenti.<div>Domanda: in Mapinfo, se nella stessa posizione ricadono più elementi del layer B, immagino avrai la possibilità di decidere che cosa farne: primo valore, valore max, media, ecc., giusto?</div><div><br></div><div>giovanni<br><div><br></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">Il giorno 13 febbraio 2017 11:43, Luca Puglisi <span dir="ltr"><<a href="mailto:luca_puglisi@tiscali.it" target="_blank">luca_puglisi@tiscali.it</a>></span> ha scritto:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
  
    
  
  <div bgcolor="#FFFFFF" text="#000000">
    Grazie Giovanni. Con 'Unisci attributi per posizione' creo un nuovo
    file, in cui avro' il vecchio campo che avrei voluto
    popolare/aggiornare di A piu' quello di B di cui avrei voluto
    prendere tutti o parte i valori.<br>
    Quando dicevo farlo in piu' passaggi, intendevo proprio l'utilizzo
    di questa funzione piu' un rimaneggiamento della tabella associata
    al file che si viene a creare. O sbaglio?<br>
    <br>
    Invec e io avrei voluto fare direttamente (come facevo con Mapinfo),
    ad esempio, prendimi i punti di A in cui il comune non e'
    specificato e aggiorna il campo 'comune' con il campo 'comune' del
    layer B<br>
    <br>
    Grazie, ciao<br>
    luca<div><div class="h5"><br>
    <br>
    <div class="m_2424281053603433458moz-cite-prefix">Il 13/02/2017 11:26, G. Allegri ha
      scritto:<br>
    </div>
    <blockquote type="cite">
      <div dir="ltr">Ciao Luca,
        <div>per quanto riguarda la seconda operazione, sei sicuro che
          non ti basti l' "Unisci attributi per posizione" che trovi
          dentro Processing -> QGIS -> Strumenti generali vettore?</div>
        <div>Prendere gli attributi in base ad una relazione spaziale
          significa necessariamente considerare l'eventualità che
          esistano relazioni 1-N, per cui viene fornita anche la
          possibilità di scegliere il metodo per ottenere i valori
          dall'overlay.</div>
        <div><br>
        </div>
        <div>Giovanni</div>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">Il giorno 13 febbraio 2017 11:19,
          Alessandro Sarretta <span dir="ltr"><<a href="mailto:alessandro.sarretta@gmail.com" target="_blank">alessandro.sarretta@gmail.com</a><wbr>></span>
          ha scritto:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <div bgcolor="#FFFFFF" text="#000000">
              <p>Se sai farlo in più passaggi potresti crearti un
                modellino che ti semplicifa il workflow: <a class="m_2424281053603433458m_6616685538528250211moz-txt-link-freetext" href="http://docs.qgis.org/2.14/en/docs/user_manual/processing/modeler.html" target="_blank">http://docs.qgis.org/2.14/en/d<wbr>ocs/user_manual/processing/mod<wbr>eler.html</a></p>
              <p>... e poi condividerlo :-)<br>
              </p>
              <p>Ale<br>
              </p>
              <div>
                <div class="m_2424281053603433458h5"> <br>
                  <div class="m_2424281053603433458m_6616685538528250211moz-cite-prefix">On
                    13/02/2017 11:12, Luca Puglisi wrote:<br>
                  </div>
                  <blockquote type="cite">Ho capito... :-) E' un
                    peccato, con il vecchio Mapinfo queste cose erano
                    davvero immediate. <br>
                    grazie lo stesso <br>
                    luca <br>
                    <br>
                    Il 08/02/2017 10:27, Luca Puglisi ha scritto: <br>
                    <blockquote type="cite">Dopo un paio di anni che uso
                      QGis non riesco a fare in UN SOLO passaggio due
                      cose che con il vecchio sw proprietario affrontavo
                      regolarmente: <br>
                      <br>
                      1) spezzare i poligoni di un layer A con quelli di
                      un layer B, conservando anche la parte di A che
                      non e' sovrapposta a B <br>
                      <br>
                      2) popolare o aggiornare, interamente o solo per
                      alcuni record, un campo del layer A prendendo
                      informazioni da elementi del layer B che sono in
                      relazione spaziale con A. <br>
                      <br>
                      In piu' passaggi lo so fare ma mi piacerebbe
                      sapere se esiste un metodo piu' diretto. Grazie <br>
                      <br>
                      un saluto a tutti <br>
                      Luca Puglisi <br>
                      <br>
                      --- <br>
                      Questa e-mail è stata controllata per individuare
                      virus con Avast antivirus. <br>
                      <a class="m_2424281053603433458m_6616685538528250211moz-txt-link-freetext" href="https://www.avast.com/antivirus" target="_blank">https://www.avast.com/antiviru<wbr>s</a>
                      <br>
                      <br>
                      ______________________________<wbr>_________________
                      <br>
                      QGIS-it-user mailing list <br>
                      <a class="m_2424281053603433458m_6616685538528250211moz-txt-link-abbreviated" href="mailto:QGIS-it-user@lists.osgeo.org" target="_blank">QGIS-it-user@lists.osgeo.org</a>
                      <br>
                      <a class="m_2424281053603433458m_6616685538528250211moz-txt-link-freetext" href="https://lists.osgeo.org/mailman/listinfo/qgis-it-user" target="_blank">https://lists.osgeo.org/mailma<wbr>n/listinfo/qgis-it-user</a>
                      <br>
                    </blockquote>
                    <br>
                    <br>
                    --- <br>
                    Questa e-mail è stata controllata per individuare
                    virus con Avast antivirus. <br>
                    <a class="m_2424281053603433458m_6616685538528250211moz-txt-link-freetext" href="https://www.avast.com/antivirus" target="_blank">https://www.avast.com/antiviru<wbr>s</a>
                    <br>
                    <br>
                    ______________________________<wbr>_________________
                    <br>
                    QGIS-it-user mailing list <br>
                    <a class="m_2424281053603433458m_6616685538528250211moz-txt-link-abbreviated" href="mailto:QGIS-it-user@lists.osgeo.org" target="_blank">QGIS-it-user@lists.osgeo.org</a> <br>
                    <a class="m_2424281053603433458m_6616685538528250211moz-txt-link-freetext" href="https://lists.osgeo.org/mailman/listinfo/qgis-it-user" target="_blank">https://lists.osgeo.org/mailma<wbr>n/listinfo/qgis-it-user</a>
                    <br>
                  </blockquote>
                  <br>
                </div>
              </div>
              <div class="m_2424281053603433458m_6616685538528250211moz-signature">-- <br>
                <font face="courier,verdana,arial,sans-serif" color="grey" size="2"> --
                  <p>Alessandro Sarretta</p>
                  <p> skype/twitter: alesarrett<br>
                    Web: <a href="http://ilsarrett.wordpress.com" target="_blank">ilsarrett.wordpress.com</a> </p>
                  <p>Research information:<br>
                  </p>
                  <ul>
                    <li><a href="http://scholar.google.it/citations?user=IsyXargAAAAJ&hl=it" target="_blank">Google scholar profile</a></li>
                    <li><a href="http://orcid.org/0000-0002-1475-8686" target="_blank">ORCID</a></li>
                    <li><a href="https://www.researchgate.net/profile/Alessandro_Sarretta" target="_blank">Research Gate</a></li>
                    <li><a href="https://impactstory.org/AlessandroSarretta" target="_blank">Impactstory</a></li>
                  </ul>
                </font> </div>
            </div>
            <br>
            ______________________________<wbr>_________________<br>
            QGIS-it-user mailing list<br>
            <a href="mailto:QGIS-it-user@lists.osgeo.org" target="_blank">QGIS-it-user@lists.osgeo.org</a><br>
            <a href="https://lists.osgeo.org/mailman/listinfo/qgis-it-user" rel="noreferrer" target="_blank">https://lists.osgeo.org/mailma<wbr>n/listinfo/qgis-it-user</a><br>
            <br>
          </blockquote>
        </div>
        <br>
      </div>
      <br>
      <fieldset class="m_2424281053603433458mimeAttachmentHeader"></fieldset>
      <br>
      <pre>______________________________<wbr>_________________
QGIS-it-user mailing list
<a class="m_2424281053603433458moz-txt-link-abbreviated" href="mailto:QGIS-it-user@lists.osgeo.org" target="_blank">QGIS-it-user@lists.osgeo.org</a>
<a class="m_2424281053603433458moz-txt-link-freetext" href="https://lists.osgeo.org/mailman/listinfo/qgis-it-user" target="_blank">https://lists.osgeo.org/<wbr>mailman/listinfo/qgis-it-user</a>
</pre>
    </blockquote>
    <br>
  
<br><br>
</div></div><hr style="border:none;color:#909090;background-color:#b0b0b0;height:1px;width:99%">
<table style="border-collapse:collapse;border:none">
        <tbody><tr>
                <td style="border:none;padding:0px 15px 0px 8px">
                        <a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient" target="_blank">
                                <img border="0" src="http://static.avast.com/emails/avast-mail-stamp.png" alt="Avast logo">
                        </a>
                </td>
                <td>
                        <p style="color:#3d4d5a;font-family:"Calibri","Verdana","Arial","Helvetica";font-size:12pt"><span class="">
                                Questa e-mail è stata controllata per individuare virus con Avast antivirus.
                                <br></span><a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient" target="_blank">www.avast.com</a>
                        </p>
                </td>
        </tr>
</tbody></table>
<br>
</div>

<br>______________________________<wbr>_________________<br>
QGIS-it-user mailing list<br>
<a href="mailto:QGIS-it-user@lists.osgeo.org">QGIS-it-user@lists.osgeo.org</a><br>
<a href="https://lists.osgeo.org/mailman/listinfo/qgis-it-user" rel="noreferrer" target="_blank">https://lists.osgeo.org/<wbr>mailman/listinfo/qgis-it-user</a><br>
<br></blockquote></div><br></div>