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<font size="+1">Hello Irantzu,<br>
As I said, for anyone to be able to help, please post</font> the
exact commands used (all from the beginning, not just the last one
which fails) and GRASS version and operating system, just like
Markus did in his post. If you are using GUI tools, there is the
copy button in the command dialogs, that will allow you to paste the
command parameters to e-mail. Also, address the reply back to the
conference - more people may have ideas.<br>
It occurs to me, that if there is no error, and the interpolation
throws unchanged input raster on you, that perhaps the input raster
contains zero values instead of no-data (null) values or something -
then there would be nothing to interpolate... But without seeing the
data or the commands used it is just wild guessing..<br>
Regards,<br>
Tomas<br>
<br>
<div class="moz-cite-prefix">Dne 25.5.2015 v 13:43 Irantzu Alvarez
napsal(a):<br>
</div>
<blockquote
cite="mid:CAAa2YsWjeg9qDV9XXmfUC6Kfs6jDWcc6mj-VNqCwSz8cBpLybA@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>
<div>
<div>
<div>
<div>Hello Tomas,<br>
</div>
As you said, I think that the problem could be in the
volume of data. My contours are of 300 MB and if I set a
region with resolution of 1 m (the one I would like to
perform) the output raster has over 3 billion cells.
Although I have a high capacity computer, grass doen't
compute the surface. With a resolution of 10 m my
region setting are:<br>
g.region
-p
<br>
projection: 1 (UTM)<br>
zone: 30<br>
datum: etrs89<br>
ellipsoid: grs80<br>
north: 4818930<br>
south: 4791480<br>
west: 486510<br>
east: 601280<br>
nsres: 10<br>
ewres: 10<br>
rows: 2745<br>
cols: 11477<br>
cells: 31504365<br>
<br>
</div>
I am trying to generalize contours, in order to reduce the
contour file, but I don't know which algorithm is better
in that case.<br>
</div>
After that I will try to use diferrent resolutions to see if
that is the problem.<br>
<br>
</div>
All the best,<br>
</div>
irantzu<br>
<br>
<br>
<br>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">2015-05-25 10:12 GMT+02:00 Tomáš
Brunclík <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:brunclik@atlas.cz" target="_blank">brunclik@atlas.cz</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> <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 moz-do-not-send="true"
href="http://grass.osgeo.org/development/bug-tracking/"
target="_blank">http://grass.osgeo.org/development/bug-tracking/</a>
<br>
Regards,<br>
Tomas Brunclik<br>
</font><br>
<div>Dne 18.5.2015 v 16:47 Irantzu Alvarez napsal(a):<br>
</div>
<blockquote type="cite">
<div>
<div class="h5">
<div dir="ltr">
<div> <span><br>
</span> </div>
<div>
<div>
<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"
target="_blank">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 lang="en"><span></span> <span>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>
</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> </span>30</span></p>
<p class="MsoNormal"
style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">datum:<span> </span>etrs89</span></p>
<p class="MsoNormal"
style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">ellipsoid:<span> </span>grs80</span></p>
<p class="MsoNormal"
style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">north:<span> </span>4818927</span></p>
<p class="MsoNormal"
style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">south:<span> </span>4791484</span></p>
<p class="MsoNormal"
style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">west:<span> </span>486512</span></p>
<p class="MsoNormal"
style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">east:<span> </span>601275</span></p>
<p class="MsoNormal"
style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">nsres:<span> </span>1</span></p>
<p class="MsoNormal"
style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">ewres:<span> </span>1</span></p>
<p class="MsoNormal"
style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">rows:<span> </span>27443</span></p>
<p class="MsoNormal"
style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">cols:<span> </span>114763</span></p>
<p class="MsoNormal"
style="margin-bottom:0.0001pt"><span
style="font-family:"Cambria","serif""
lang="EN-US">cells:<span> </span><a
moz-do-not-send="true"
href="tel:3149441009"
value="+13149441009" target="_blank">3149441009</a></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>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><br>
</span></p>
Could someone help me please? </div>
</div>
</div>
<br>
<fieldset></fieldset>
<br>
</div>
</div>
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