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<font size="+1">PS: Just another wild guess ;) <br>
- Does the input vector bathymetry file contain vector lines?
Because when I have tried my test, what I downloaded to play with
contained polygons, not lines and I had to convert it to lines
first (something like: v.type input=bathymetry
output=bathymetry_lines from_type=boundary to_type=line). That
would also explain your difficulties..</font><br>
Tomas<br>
<br>
<div class="moz-cite-prefix">Dne 26.5.2015 v 10:38 Tomáš Brunclík
napsal(a):<br>
</div>
<blockquote cite="mid:556430F0.8020106@atlas.cz" type="cite">
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<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>
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</div>
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