<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_ym19_1_1489154004561_4525"><span id="yui_3_16_0_ym19_1_1489154004561_4792">Hi Lorenzo, I tried to interpolate before cutting the contour lines layer but it takes a massive amount of time to generate and blocks my computer, taking all its computational resources. Apparently this (cropping a layer by a rectangle with the geoprocessing tool and then interpolate) works well on a previous version of QGis I wonder why it doesn't in the latest releases??????</span></div><div id="yui_3_16_0_ym19_1_1489154004561_4927"><span id="yui_3_16_0_ym19_1_1489154004561_4792"><br></span></div><div id="yui_3_16_0_ym19_1_1489154004561_4686" dir="ltr"><span id="yui_3_16_0_ym19_1_1489154004561_4790">I tried to do this with the latest release of QGIS 2.18.....I have a laptop with win8.1 Intel core I5 and Gb ram....only!<br></span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1489154004561_4838"><span id="yui_3_16_0_ym19_1_1489154004561_4790">Any other "simple" way that this can be done?</span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1489154004561_4858"><span id="yui_3_16_0_ym19_1_1489154004561_4790">Cheers</span></div><div id="yui_3_16_0_ym19_1_1489154004561_4627"> </div><div class="signature" id="yui_3_16_0_ym19_1_1489154004561_4498">=============================================== <br>PermaCultura-es http://www.permacultura-es.org</div> <div class="qtdSeparateBR"><br><br></div><div class="yahoo_quoted" style="display: block;"> <div style="font-family: HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"><font size="2" face="Arial"> Il Mercoledì 8 Marzo 2017 14:25, Lorenzo Bambi <lorenzo.bambi@gmail.com> ha scritto:<br></font></div> <br><br> <div class="y_msg_container"><div dir="ltr">2017-03-08 0:23 GMT+01:00 antonio scotti <<a shape="rect" ymailto="mailto:kiaikidobcn@yahoo.com" href="mailto:kiaikidobcn@yahoo.com">kiaikidobcn@yahoo.com</a>>:<br clear="none">> Hi all, I am new to this forum and to QGIS<br clear="none">> I am trying to construct a DEM from contour lines by using QGIS 2.14.0.<br clear="none">> I am doing this by using a clip rectangle on top of the contour lines and<br clear="none">> interpolating, by using the interpolation plugin<br clear="none">><br clear="none">> After I enter the data in the interpolation dialog and clic Save I get an<br clear="none">> exception (se attached file).<br clear="none">> Any help appreciated<div class="yqt8780597207" id="yqtfd16673"><br clear="none"><br clear="none">Hi,</div><br clear="none">I have the same problem if i cut vector layers previously with<br clear="none">geoprocessing clip. If you want use the interpolation plugin, try not<br clear="none">to cut the vector layers, but after, cut the dem (raster --><br clear="none">Exstraction --> Clipper).<br clear="none">Lorenzo<div class="yqt8780597207" id="yqtfd13522"><br clear="none"></div></div><br><br></div> </div> </div> </div></div></body></html>