Soy 100% nuevo en QGIS y estoy teniendo problemas para hacer algo que parece fácil; borrar algunas líneas de polígonos para poder fusionarlos.
Selecciono las regiones con Selección de características por polígono pero todas las opciones de edición están desactivadas.
Los datos proceden de un archivo KML, que puede encontrarse en Polygonen NL Códigos postales 4PP
Este es el código de uno de los polígonos:
<Placemark>
<snippet></snippet>
<description>
<![CDATA[<div class="googft-info-window">
<b>PC4CODE:</b> 3584
</div>]]>
</description>
<styleUrl>#Style0-polygon-3-map</styleUrl>
<ExtendedData>
<Data name='PC4CODE'>
<value>3584</value>
</Data>
</ExtendedData>
<Polygon>
<outerBoundaryIs>
<LinearRing>
<coordinates>
5.195259,52.077105,0.0 5.19297,52.07784,0.0 5.184979,52.076905,0.0 5.182108,52.076264,0.0 5.179659,52.078167,0.0 5.175612,52.0783,0.0 5.173373,52.079515,0.0 5.168691,52.077182,0.0 5.167285,52.076597,0.0 5.163053,52.07819,0.0 5.161547,52.07969,0.0 5.159449,52.080566,0.0 5.156781,52.080794,0.0 5.153706,52.080326,0.0 5.147651,52.07711,0.0 5.144558,52.076654,0.0 5.141332,52.076851,0.0 5.141845,52.078563,0.0 5.144388,52.081649,0.0 5.147358,52.084668,0.0 5.148194,52.086306,0.0 5.147915,52.088275,0.0 5.146056,52.090319,0.0 5.144159,52.096222,0.0 5.156885,52.09852,0.0 5.161309,52.094512,0.0 5.166102,52.093676,0.0 5.168183,52.094002,0.0 5.170324,52.094185,0.0 5.174459,52.093687,0.0 5.179074,52.093366,0.0 5.179679,52.09462,0.0 5.182451,52.09443,0.0 5.18439,52.093213,0.0 5.185912,52.093285,0.0 5.189662,52.08635,0.0 5.192716,52.085956,0.0 5.195259,52.077105,0.0
</coordinates>
</LinearRing>
</outerBoundaryIs>
</Polygon>
</Placemark>
¿Tiene algo que haga imposible la fusión de polígonos?