<meta http-equiv="content-type" content="text/html; charset=utf-8"><div>Hi,</div><div id="AppleMailSignature">Try a raster to vector conversion instead. That will give you better results.</div><div id="AppleMailSignature">Cheers<br><br>Envoyé de mon iPad</div><div><br>Le 15 sept. 2016 à 08:30, KOHLMANN Hannes [via <a href="http://osgeo.org" target="_top" rel="nofollow" link="external">OSGeo.org</a>] <<a href="/user/SendEmail.jtp?type=node&node=5286106&i=0" target="_top" rel="nofollow" link="external">[hidden email]</a>> a écrit :<br><br></div><blockquote style='border-left:2px solid #CCCCCC;padding:0 1em' type="cite"><div>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hello Nicolas,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">thank you for your answer! Reinstalling Osgeo removed the error I mentioned. Now I was able to get contour lines (!! When I chose „Auto“ for the advanced preference
v.out.ogr) with r.contour.step, where I chose the minimum 0 and maximum 10 with step size 1. After getting the contour vector layer, I transformed it with the tool Vector
</span><span style="font-size:11.0pt;font-family:Wingdings;color:#1F497D">à</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> Geometry tools
</span><span style="font-size:11.0pt;font-family:Wingdings;color:#1F497D">à</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> from line to polygon which gives me areas, that I gave 5 different colors then.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Snapshots of the density raster file and the result (filled contours) are here:
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Density:
<a href="https://postimg.org/image/86yowo0oj/" target="_top" rel="nofollow" link="external">https://postimg.org/image/86yowo0oj/</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Filled Contours:
<a href="https://postimg.org/image/ugk8s349n/" target="_top" rel="nofollow" link="external">https://postimg.org/image/ugk8s349n/</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I’m not really satisfied with that result because:<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:36.0pt;text-indent:-18.0pt;mso-list:l1 level1 lfo2">
<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><span style="mso-list:Ignore">1)<span style="font:7.0pt "Times New Roman"">
</span></span></span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Why is it, that there are white areas where actually there should be other than blank? Is it because the contour lines are not closed for these areas?
I strongly think so - what would be recommended to avoid that ?<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:36.0pt;text-indent:-18.0pt;mso-list:l1 level1 lfo2">
<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><span style="mso-list:Ignore">2)<span style="font:7.0pt "Times New Roman"">
</span></span></span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">When I select „area“ under the advanced preferences in r.contour.step, I get NOTHING … not a single value or color… do I have to configure the parameters
of r.contour.step/level differently?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">If you are interested in trying to reproduce that, here is the corresponding density .dat raster file. I gave it the style of 5 different colors, equidistantly
distributed.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><a href="https://www.dropbox.com/s/bpkfkvos6ss3wx5/density_2015.dat?dl=0" target="_top" rel="nofollow" link="external">https://www.dropbox.com/s/bpkfkvos6ss3wx5/density_2015.dat?dl=0</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thank you very much for your help, it took me already one step closer tot he truth :D<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hannes<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Von:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Qgis-user [<a href="/user/SendEmail.jtp?type=node&node=5286093&i=0" target="_top" rel="nofollow" link="external">[hidden email]</a>]
<b>Im Auftrag von </b>Nicolas Cadieux<br>
<b>Gesendet:</b> Donnerstag, 8. September 2016 19:57<br>
<b>An:</b> <a href="/user/SendEmail.jtp?type=node&node=5286093&i=1" target="_top" rel="nofollow" link="external">[hidden email]</a><br>
<b>Betreff:</b> Re: [Qgis-user] QGIS - help: filled contour lines from raster layer data<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Hi,<o:p></o:p></p>
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<div id="AppleMailSignature">
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I am not sure why you get that error but the r.contour.level will give you what you need if you select "area" in the
<a href="http://v.out.org" target="_top" rel="nofollow" link="external">v.out.org</a> parameter. That will give you polygons that you can color the fill area. If you have installed the latest version of Qgis, your processing toolbox could be a mix of old and new tools. If this is the case,
I would do complete reinstall deleting all the old plugins.<o:p></o:p></p>
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<div id="AppleMailSignature">
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div id="AppleMailSignature">
<p class="MsoNormal">Nicolas<o:p></o:p></p>
</div>
<div id="AppleMailSignature">
<p class="MsoNormal"><br>
Envoyé de mon iPad<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
Le 8 sept. 2016 à 08:47, KOHLMANN Hannes [via <a href="http://osgeo.org" target="_top" rel="nofollow" link="external">
OSGeo.org</a>] <<a href="/user/SendEmail.jtp?type=node&node=5284798&i=0" target="_top" rel="nofollow" link="external">[hidden email]</a>> a écrit :<o:p></o:p></p>
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<blockquote style='border-left:2px solid #CCCCCC;padding:0 1em' style="border-left:2px solid #CCCCCC;padding:0 1em">
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<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hello dear QGis users!<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">A collegue and me were wondering if it is possible to create contour lines, or more important for us, FILLED contour lines (areas) for
<u>RASTER LAYER</u> data!<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">We are both very positive that this once worked and we have done that. Now we cannot find the way to reproduce that anymore.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On the one hand, we thought that we had done it with the gdal-Contour tool in QGIS (Raster->Extract->Contour), but now we can’t find an option to generate filled contour areas,
like<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">it is possible with the installable extension „Contour Plugin“ (which is only possible to use with a point vector layer, but this is exactly what we think that we have done to a
raster layer file!). <o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:36.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo4">
<span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span>Now the question: was that ever possible to do with the gdal-contour plugin? Or not…<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:36.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo4">
<span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span>On the other hand, we also tried to use the GRASS Gis algorithms r.contour.level or r.contour.step, etc in the processing toolbox, but they keep giving us the error message: „environment can only contain strings See log for more details“.
What ist he problem here? Does it have to do with the new version Grass Gis 7?<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:36.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo4">
<span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span>Bottom line is: We have got a .dat file, which is a raster layer with valued pixels that we are displaying in spectral colors. Now we want to extract the contour lines and to have a color fill between those contour lines. How would you
do this – is there an easy solution, which differs from the numerous tutorials on the web, which seem to be a lot more complicated than what we actually remember to have done?<o:p></o:p></p>
<p class="MsoListParagraph"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Thank you very much in advance, any answer would be very helpful!<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Best regards,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hannes Kohlmann<o:p></o:p></p>
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