Hi, I seem that you use grass (module of qgis) for this action or openjump 😉.
Regards Ted Envoyé de mon iPad > Le 28 mars 2018 à 19:23, "[email protected]" <[email protected]> a > écrit : > > Hi everybody > > I have a PointSHP with Z field value that represents the survey on a step > vineyard: points have been token along base and edge of steps to represent > slope breaks. > > In order to build a TIN (DEM) I created a line SHP and drew a series of lines > linking related points (respecting morphological alignements). > > Then I tried to build a triangulagion TIN (DEM) by "Interpolation TIN" tool > using my points with their Z elevation field and my breaklinesline SHP to > constrain triangulation inside each slope or step. > But the TIN obtained is a regular inclined surface that follows the general > slope of the whole survey given by mean of z value of points: no steps no > slopes. > > Where I miss? What is the way to build a TIN from points with constrain lines? > I send an image that represents the points and breaklines on a orthophoto > foreground and beside the same vector elements on the resulting TIN by > interpolation. > > Thanks in advance. > > -- > Riccardo Casoli, Geologo (email:[email protected]; cell:3289026131) > > > Studio Associato Risorsaterra > di Barbonaglia, Casoli, Colombo, Cravello > Agricoltura, geologia, foreste > via Coda, 22/e > 13900 Biella Chiavazza > Tel e fax: 01523346 > e-mail: [email protected] > C.F. e P.Iva: IT02413380029 > > > <Clipboard01.jpg> > _______________________________________________ > Qgis-user mailing list > [email protected] > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
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