[GRASS-user] calculate the volume of a DEM with r.volume

marion-brunet at sfr.fr marion-brunet at sfr.fr
Sun Jul 15 04:22:49 PDT 2018


<span style="font-family:arial,helvetica,sans-serif; font-size:12px">Hello,<br>
<br>
Indeed it worked when ‌I changed the name!<br>
Thank you very much!<br>
<br>
Marion</span>

<div class="gl_quote" style="margin-top: 20px; padding-top: 5px;">De : "Micha Silver"<br>
A : marion-brunet at sfr.fr,"Markus Neteler" ,"grass-user"<br>
Envoyé: vendredi 13 juillet 2018 13:19<br>
Objet : Re: [GRASS-user] calculate the volume of a DEM with r.volume<br>
 
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Hi<br>
I noticed you have a raster with a "minus" character in the name.<br>
Sometimes that gives trouble. Not sure if it's relevant to the current problem, but it might be worth renaming to something like "dec_juin" (underscore instead of '-') and trying again.<br>
 
<div class="moz-cite-prefix">On 07/13/2018 10:51 AM, <a class="moz-txt-link-abbreviated" href="mailto:marion-brunet at sfr.fr">marion-brunet at sfr.fr</a> wrote:</div>

<blockquote cite="mid:757914629.33847.1531468266343.JavaMail.www at wsfrf1413" type="cite"><meta http-equiv="content-type" content="text/html; charset=utf-8"><span style="font-family:arial,helvetica,sans-serif; font-size:12px">‌</span><span style="font-family:arial,helvetica,sans-serif; font-size:12px">Hello,<br>
<br>
I am working on Windows and I tried using GRASS 7.2.2, GRASS 7.4.0 and GRASS 7.4.1 to see if there is any difference, but it is always the same.<br>
<br>
I have a ratser map called<span style="font-family:courier
          new,courier,monospace"> dec-</span><span style="font-family:courier new,courier,monospace">juin</span><br>
First I did</span><span style="font-family:courier
        new,courier,monospace"> r.clump input=dec-juin at 1217_Interpo0618 output=test</span><br>
<span style="font-size:12px">to get the clumps<br>
Then I did</span><span style="font-family:courier
        new,courier,monospace"> r.volume input=dec-juin at 1217_Interpo0618 clump=test at 1217_Interpo0618</span><br>
<span style="font-family:arial,helvetica,sans-serif; font-size:12px">to have the volume.<br>
The result I have is:</span><br>
<br>
<span style="font-family:courier new,courier,monospace">(<span style="font-size:12px">Fri Jul 13 14:12:45 2018)                                                      <br>
r.volume input=dec-juin at 1217_Interpo0618 clump=test at 1217_Interpo0618            <br>
Volume report on data from <dec-juin at 1217_Interpo0618> using clumps on <test at 1217_Interpo0618> raster map<br>
Category   Average   Data   # Cells        Centroid             Total</span></span><br>
<span style="font-size:12px"><span style="font-family:courier
          new,courier,monospace">Number</span></span><span style="font-size:12px"><span style="font-family:courier
          new,courier,monospace">     in clump  Total  in clump   Easting     Northing     Volume<br>
-----------------------------------------------------------------------------<br>
       1     -8.02       -72       9   191262.28  1222178.97           -22.59<br>
       2     -9.02      -622      69   191265.64  1222177.29          -194.78<br>
       3     -8.04      -394      49   191268.44  1222176.73          -123.30<br>
       4     -7.08      -276      39   191271.23  1222177.85           -86.46<br>
       5     -5.94      -427      72   191274.59  1222176.73          -133.75<br>
       6     -4.30      -275      64   191285.22  1222178.97           -86.09<br>
       7     -5.10     -2714     532   191288.58  1222174.50          -849.47<br>
       8     -0.60        -7      12   191221.43  1222177.29            -2.27<br>
       9     -8.95     -1030     115   191230.39  1222176.17          -322.31<br>
      10    -10.06     -1217     121   191245.49  1222175.61          -380.88<br>
      11    -10.93     -1956     179   191249.97  1222177.29          -612.34<br>
      12    -10.24      -645      63   191259.48  1222175.61          -201.92<br>
      13     -7.05      -621      88   191329.43  1222177.29          -194.28<br>
      14     -7.51       -60       8   191336.14  1222177.29           -18.81<br>
      15     -7.47       -30       4   191337.26  1222177.29            -9.35<br>
      16     -8.04      -322      40   191340.06  1222177.29          -100.63<br>
      17     -8.99      -108      12   191343.98  1222177.29           -33.78<br>
      18      4.98        45       9   191182.26  1222175.05            14.03<br>
      etc<br>
      etc<br>
   24458     -5.50       -22       4   191397.13  1221585.50            -6.88<br>
   24459     -5.51       -33       6   191378.11  1221584.39           -10.34<br>
   24460     -5.52       -11       2   191380.91  1221584.39            -3.45<br>
   24461     -5.27    -30348    5764   191309.84  1221601.17         -9498.51<br>
   24462     -5.49       -38       7   191358.53  1221582.15           -12.02<br>
   24463     -5.49       -22       4   191363.56  1221583.83            -6.87<br>
   24464     -5.48       -11       2   191385.38  1221583.83            -3.43<br>
   24465     -5.49       -11       2   191387.06  1221583.83            -3.44<br>
   24466     -5.50       -11       2   191388.74  1221583.83            -3.44<br>
   24467     -5.50       -22       4   191360.20  1221582.71<br>
           -6.88<br>
   24468     -5.92   -523187   88358   191241.58  1221675.00       -163750.63              <br>
(Fri Jul 13 14:13:03 2018) La commande s'est terminée (18 sec) </span></span><br>
<br>
<span style="font-size:12px">As you can see, I have nothing at the end of the command... But I know it is finished, because when I created the clumps it said that it created 24468 clumps.<br>
Do you need any more information?<br>
<br>
<br>
Thank you very much</span><br>
 
<div class="gl_quote" style="margin-top: 20px; padding-top: 5px;">De : "Markus Neteler"<br>
A : <a class="moz-txt-link-abbreviated" href="mailto:marion-brunet at sfr.fr">marion-brunet at sfr.fr</a>,"grass-user"<br>
Envoyé: jeudi 12 juillet 2018 16:43<br>
Objet : Re: [GRASS-user] calculate the volume of a DEM with r.volume<br>
 
<div class="gl_quoted">
<div dir="ltr">Hello Marion,<br>
<br>
On Wed, Jul 11, 2018 at 10:32 AM,  <<a href="mailto:marion-brunet at sfr.fr" moz-do-not-send="true">marion-brunet at sfr.fr</a>> wrote:<br>
> Hello,<br>
><br>
> I tried using r.volume as you suggested.  According to the documentation it<br>
> is suitable for what I am trying to do.<br>
><br>
> However, when I use it, I don't have the "Total volume" line at the end of<br>
> the report, like it is shown in the documentation. I just have the total<br>
> volume of each clump, but not of all the clumps... Has it ever happened to<br>
> you when using this command?<br>
<br>
That's weird! Which version/operating system do you use?<br>
<br>
> in the command line<br>
><br>
> I simply wroter.volume input=difference clump=clump in the command line<br>
<br>
<br>
Here on command line:<br>
<br>
<span style="font-family:monospace,monospace">GRASS 7.4.1svn (nc_spm_08_grass7):~ > g.region raster=elevation<br>
GRASS 7.4.1svn (nc_spm_08_grass7):~ > r.volume input=elevation clump=geology_30m<br>
 100%<br>
<br>
Volume report on data from <elevation> using clumps on <geology_30m> raster map<br>
<br>
Category   Average   Data   # Cells        Centroid             Total<br>
Number     in clump  Total  in clump   Easting     Northing     Volume<br>
-----------------------------------------------------------------------------<br>
     217    118.93  86288828  725562   635325.00   221535.00    8628882798.63<br>
     262    108.97  21650560  198684   638935.00   222495.00    2165056037.02<br>
     270     92.23  63578874  689373   642405.00   221485.00    6357887443.53<br>
     405    132.96  33732662  253710   631835.00   224095.00    3373266208.59<br>
     583    139.35   3011288   21609   630205.00   224665.00     301128821.55<br>
     720    124.30    599618    4824   634075.00   227995.00      59961816.06<br>
     766    132.43    936791    7074   631425.00   227845.00      93679120.08<br>
     862    118.31   7302317   61722   630505.00   218885.00     730231746.74<br>
     910     94.20   4235816   44964   639215.00   216365.00     423581613.11<br>
     921    135.22   1693985   12528   630755.00   215445.00     169398523.05<br>
     945    127.24      1145       9   630015.00   215015.00        114512.03<br>
     946     89.91    365748    4068   639085.00   215255.00      36574833.85<br>
     948    129.02    112632     873   630185.00   215115.00      11263181.57<br>
-----------------------------------------------------------------------------<br>
                                                Total Volume = 22351026655.81</span>

<div> </div>

<div>... which looks ok.</div>

<div> </div>

<div>Can you say a bit more about your system?</div>

<div> </div>

<div>Markus</div>
</div>
</div>

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<pre class="moz-signature" cols="72">-- 
Micha Silver
Ben Gurion Univ.
Sde Boker, Remote Sensing Lab
cell: +972-523-665918</pre>
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