<div dir="ltr"><div>Thanks makus for your reply, i have added more details as required and also the error experienced.</div><div dir="ltr">operating system :windows 10<div>GRASS GIS: 7.4</div><div><br></div><div>this is the output command and error</div><div><br></div><div><p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-GB">Iteration 1 -- step 4: calculating
divergence/difference of sediment transport for each process and the actual
amount of erosion or deposition in vertical meters/cell/year</span></p>
<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-GB">*************************</span></p>
<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-GB"> </span></p>
<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-GB">Running soft-knee smoothing filter...</span></p>
<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-GB">Enacting additional "low"
smoothing: one pass of a 3x3 modal smoothing window.</span></p>
<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-GB">ERROR: Unable to load rules file
<c:\users\samy\appdata\local\temp\grass7-samy-7592\tmpgyoapy></span></p>
<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-GB">Traceback (most recent call last):</span></p>
<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-GB">
File "C:\Users\Samy\AppData\Roaming\GRASS7\addons/scripts/</span><span style="font-size:11pt"><a href="http://r.landscape.evol.py">r.landscape.evol.py</a>", line 681, in
<module></span></p>
<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-GB">
main(x, (x + 1), prefx, statsout,
region1['nsres'], </span><span style="font-size:11pt">masterlist);</span></p>
<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-GB">
File "C:\Users\Samy\AppData\Roaming\GRASS7\addons/scripts/</span><span style="font-size:11pt"><a href="http://r.landscape.evol.py">r.landscape.evol.py</a>", line 509, in
main</span></p>
<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-GB">
grass.run_command('r.colors', quiet = "True", map =</span><span style="font-size:11pt">netchange, rules = <a href="http://nccolors.name">nccolors.name</a>)</span></p>
<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-GB">
File "C:\Program Files\GRASS GIS </span><span style="font-size:11pt">7.4.0\etc\python\grass\script\core.py",
line 421, in</span></p>
<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-GB">run_command </span><span style="font-size:11pt"> </span><span style="font-size:11pt">return handle_errors(returncode, returncode, args, </span><span style="font-size:11pt">kwargs)</span></p>
<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-GB">
File "C:\Program Files\GRASS GIS </span><span style="font-size:11pt">7.4.0\etc\python\grass\script\core.py",
line 332, in</span></p>
<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-GB">handle_errors </span><span style="font-size:11pt"> </span><span style="font-size:11pt">returncode=returncode)</span></p>
<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-GB">grass.exceptions.CalledModuleError: Module
run None </span></p>
<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-GB">['r.colors', '--q', 'rules=c:\\users\\samy\\appdata\\local\\</span></p>
<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-GB">temp\\grass7-samy-7592\\tmpgyoapy',
'map=levol_ED_rate']</span></p>
<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-GB">ended with error</span></p>
<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-GB">Process ended with non-zero return code 1.
See errors in the</span></p>
<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-GB">(error) output.<br></span></p><p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-GB"><br></span></p><p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-GB">Thanks</span></p></div></div></div><div dir="ltr"></div><br><div class="gmail_quote"><div dir="ltr">On Tue, Sep 11, 2018 at 10:32 PM Markus Neteler <<a href="mailto:neteler@osgeo.org" target="_blank">neteler@osgeo.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Sun, Sep 9, 2018 at 11:55 PM Nicholas Uwadia<br>
<<a href="mailto:uwadianicholas@gmail.com" target="_blank">uwadianicholas@gmail.com</a>> wrote:<br>
><br>
> hi<br>
> am trying to model gully erosion changes using the r.landscape.evol i get an erros as the output to excel is blank. i kindly as if there is any tutorial using this tool that can guide me.<br>
<br>
Please post more details - which operating system, which GRASS GIS<br>
version and which error message appears.<br>
<br>
Markus<br>
</blockquote></div>