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<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Yes, thanks! Thats it. Thanks also for reviewing the PR so quickly!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Cheers<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Stefan<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Anna Petrášová <kratochanna@gmail.com>
<br>
<b>Sent:</b> fredag 30. august 2019 20:47<br>
<b>To:</b> Stefan Blumentrath <Stefan.Blumentrath@nina.no><br>
<b>Cc:</b> GRASS developers list <grass-dev@lists.osgeo.org><br>
<b>Subject:</b> Re: [GRASS-dev] Random selection of a given number of points/pixels per class<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">r.sample.category in addons seems like what you want?<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">On Fri, Aug 30, 2019 at 3:59 AM Stefan Blumentrath <</span><a href="mailto:Stefan.Blumentrath@nina.no"><span lang="EN-US">Stefan.Blumentrath@nina.no</span></a><span lang="EN-US">> wrote:<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">Dear devs,<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">Recently, I was trying to generate a fixed number of random points per class in a vector or raster map.<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">So I looked at both v.random and r.random. However, neither seemed to give me the desired result:<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">v.random with restrict option seems to generate points per area even if areas belong to the same class and share the same cat value.<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">r.random does not have a restrict option.<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">So I ended up writing a small script that basically loops over the classes and extracts n points/pixels per class from a input raster map. My question now is
did I overlook some less obvious feature of v.random or r.random?<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">If not I might create a small wrapper addon…<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">Cheers<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">Stefan<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">_______________________________________________<br>
grass-dev mailing list<br>
</span><a href="mailto:grass-dev@lists.osgeo.org" target="_blank"><span lang="EN-US">grass-dev@lists.osgeo.org</span></a><span lang="EN-US"><br>
</span><a href="https://lists.osgeo.org/mailman/listinfo/grass-dev" target="_blank"><span lang="EN-US">https://lists.osgeo.org/mailman/listinfo/grass-dev</span></a><span lang="EN-US"><o:p></o:p></span></p>
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