If you want the surface to pass exactly through the points (which can yield potential overshoots), set the smoothing to zero. <br><br>Mark<br><br><div class="gmail_quote">On Tue, May 20, 2008 at 1:12 PM, Stéphanie Faroux <<a href="mailto:stephanie.faroux@meteo.fr">stephanie.faroux@meteo.fr</a>> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">I used v.surf.rst but when i look at new (raster) and old (vector) values in a given point, they are not the same and even sometimes very remote from one another. I thought the interpolation would not modify values of points existing at the departure in the vector layer.<br>
Should i try to fit the function parameters ?<br>
Thanks<br>
<br>
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