<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Hi,</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">I seem that you use grass (module of qgis) for this action or openjump 😉.</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">Regards</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">Ted</div><div id="AppleMailSignature"><br>Envoyé de mon iPad</div><div><br>Le 28 mars 2018 à 19:23, "<a href="mailto:casoli@risorsaterra.it">casoli@risorsaterra.it</a>" <<a href="mailto:casoli@risorsaterra.it">casoli@risorsaterra.it</a>> a écrit :<br><br></div><blockquote type="cite"><div>
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<p>Hi everybody</p>
<p>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.</p>
<p>In order to build a TIN (DEM) I created a line SHP and drew a
series of lines linking related points (respecting morphological
alignements).</p>
<p>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.<br>
</p>
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<p>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.</p>
<p>Where I miss? What is the way to build a TIN from points with
constrain lines?<br>
</p>
<p>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.</p>
<p>Thanks in advance. <br>
</p>
</div>
<br>
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<p style="margin-bottom: 0cm" align="LEFT"><i><u><b>Riccardo
Casoli</b></u>, Geologo<font size="2"> (email:<a href="mailto:casoli@risorsaterra.it">casoli@risorsaterra.it</a>;
cell:3289026131)</font></i></p>
<br>
<br>
Studio Associato Risorsaterra<br>
di Barbonaglia, Casoli, Colombo, Cravello<br>
Agricoltura, geologia, foreste<br>
via Coda, 22/e<br>
13900 Biella Chiavazza<br>
Tel e fax: 01523346<br>
e-mail: <a class="moz-txt-link-abbreviated" href="mailto:info@risorsaterra.it">info@risorsaterra.it</a><br>
C.F. e P.Iva: IT02413380029<br>
<p style="margin-bottom: 0cm"><br>
</p>
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<br>
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