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<font size="+1">Hello,<br>
I tried to process bathymetry lines with negative elevation and it
just worked in GRASS 7.0.1svn r65198 @Linux. Maybe try if it works
with coarser resolution or region subset to test if the data
volume is the problem, or if your version of GRASS really has
problem with negative elevation values. Also try to look if the
input raster contains expected values, if you did not check that
already.<br>
If the problem persists, post your findings with log of the
commands you used, your GRASS version and platform. <br>
If it seems a problem of the GRASS module, and you are using a
recent version of GRASS, it would be better to fill a bug,
instructions at <a class="moz-txt-link-freetext" href="http://grass.osgeo.org/development/bug-tracking/">http://grass.osgeo.org/development/bug-tracking/</a> <br>
Regards,<br>
Tomas Brunclik<br>
</font><br>
<div class="moz-cite-prefix">Dne 18.5.2015 v 16:47 Irantzu Alvarez
napsal(a):<br>
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cite="mid:CAAa2YsX2WeaOKgYFqOr_NXoWWqeVGOvHxATyfQqAGTs25X-HMQ@mail.gmail.com"
type="cite">
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<p>I am trying to create a DEM from a bathymetric contour
lines. Contours are in vector format and the elevation
value is negative (integers). To create the surface I have
converted the contours in raster (<a
moz-do-not-send="true" href="http://v.to">v.to</a> rast)
and then I have used r.surf.contour, but It doesn't work
(there is no error but the resulting output raster<span
id="result_box" class="" lang="en"><span class=""></span>
<span class="">is exactly the same </span>as the
previous one, without any interpolation)</span>. <br>
</p>
<p>This are my region settings:</p>
<p>
</p>
<p class="MsoNormal" style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">g.region -p -a
raster=contours@iiaa nsres=1 ewres=1<span style="">
</span></span></p>
<p class="MsoNormal" style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">projection: 1 (UTM)</span></p>
<p class="MsoNormal" style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">zone:<span style=""> </span>30</span></p>
<p class="MsoNormal" style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">datum:<span style=""> </span>etrs89</span></p>
<p class="MsoNormal" style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">ellipsoid:<span style=""> </span>grs80</span></p>
<p class="MsoNormal" style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">north:<span style=""> </span>4818927</span></p>
<p class="MsoNormal" style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">south:<span style=""> </span>4791484</span></p>
<p class="MsoNormal" style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">west:<span style=""> </span>486512</span></p>
<p class="MsoNormal" style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">east:<span style=""> </span>601275</span></p>
<p class="MsoNormal" style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">nsres:<span style=""> </span>1</span></p>
<p class="MsoNormal" style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">ewres:<span style=""> </span>1</span></p>
<p class="MsoNormal" style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">rows:<span style=""> </span>27443</span></p>
<p class="MsoNormal" style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">cols:<span style=""> </span>114763</span></p>
<p class="MsoNormal" style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">cells:<span style=""> </span>3149441009</span></p>
<p class="MsoNormal" style="margin-bottom:0.0001pt"><br>
<span
style="font-family:"Cambria","serif""
lang="EN-US"></span></p>
<p class="MsoNormal" style="margin-bottom:0.0001pt"><br>
<span class="">I need a DEM of very high resolution of a
wide area. I am using a computer with large capacities
for it.</span></p>
<p class="MsoNormal" style="margin-bottom:0.0001pt"><span
class=""><br>
</span></p>
Could someone help me please? </div>
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</div>
<br>
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