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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">I had some trouble with r.stream.basins which labeled all basins created with points option as -1.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">After some investigation I found out that the problem was that my vector points map only had categories on layer 2.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">After transferring the categories to layer 1 everything worked fine. During my test with NC dataset I also saw that if there only some points on a layer have a category, no basin is produced for the points without category;
even if the message of the module says differently.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The latter can be reproduced with NC data like this:<o:p></o:p></span></p>
<p class="MsoNormal">g.region -p raster=elev_lid792_1m<o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">r.watershed elevation=elev_lid792_1m accumulation=flow_accum drainage=draindir<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">echo "638867.632469|220039.545432|7<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">638563.344273|220045.597694|12<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">638945.422741|220706.456664|999<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">638978.525142|220455.417819|" | v.in.ascii input=- output=points columns="cat integer" cat=3 --o<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">r.stream.basins --o --v -c direction=draindir points=points memory=3000 basins=basins<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">From that experience I would like to suggest either<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">a)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Adding a layer option to the module<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">b)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Give at least a warning if features in the vector map are lacking a category
<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">c)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Clarify the behavior in the manual<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">or maybe a combination of a-c…<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I could assist with c)…<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">What do you think?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Cheers<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Stefan<o:p></o:p></span></p>
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