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<p><font size="+1">You might be interpreting the gradient of NDVI
values from vegetation to non-vegetation as "fuzziness". </font></p>
<p><font size="+1"></font><br>
</p>
<div class="moz-cite-prefix">On 5/7/21 9:27 PM, Neels Brink wrote:<br>
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cite="mid:4607369970b04ae69050bde2248e969a@incomargroup.com">
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<p class="MsoNormal">Yes, the raster calculator, and the extent
(resolution, nr of pixels, everything) of the output file
matches that of the two input bands. What is interesting is
that I noted that the boundaries of some man-made objects do
no show this fuzziness:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><img style="width:4.7916in;height:3.2833in"
id="Picture_x0020_7"
src="cid:part1.E7E01BEB.47F38A6B@gmail.com" class=""
width="460" height="315"><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="line-height:106%"><span
style="mso-fareast-language:EN-ZA"><o:p> </o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span
style="mso-fareast-language:EN-ZA" lang="EN-US">From:</span></b><span
style="mso-fareast-language:EN-ZA" lang="EN-US"> Nicolas
Cadieux <a class="moz-txt-link-rfc2396E" href="mailto:njacadieux.gitlab@gmail.com"><njacadieux.gitlab@gmail.com></a>
<br>
<b>Sent:</b> Friday, May 7, 2021 6:27 PM<br>
<b>To:</b> Neels Brink
<a class="moz-txt-link-rfc2396E" href="mailto:Neels.Brink@incomargroup.com"><Neels.Brink@incomargroup.com></a><br>
<b>Cc:</b> <a class="moz-txt-link-abbreviated" href="mailto:qgis-user@lists.osgeo.org">qgis-user@lists.osgeo.org</a><br>
<b>Subject:</b> Re: [Qgis-user] NDVI resolution<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hi,<span style="mso-fareast-language:EN-ZA"><o:p></o:p></span></p>
<div>
<p class="MsoNormal">Did you use the raster calculator? If
so, did you select the proper extent and rows and columns in
the output files?<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><a
href="https://docs.qgis.org/3.16/en/docs/user_manual/working_with_raster/raster_analysis.html#raster-calculator"
moz-do-not-send="true">https://docs.qgis.org/3.16/en/docs/user_manual/working_with_raster/raster_analysis.html#raster-calculator</a><o:p></o:p></p>
<div>
<p class="MsoNormal">Nicolas Cadieux<o:p></o:p></p>
<div>
<p class="MsoNormal"><a
href="https://gitlab.com/njacadieux"
moz-do-not-send="true">https://gitlab.com/njacadieux</a><o:p></o:p></p>
</div>
</div>
<div>
<p class="MsoNormal"><br>
<br>
<o:p></o:p></p>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal" style="margin-bottom:12.0pt">Le 7 mai
2021 à 11:56, Neels Brink <<a
href="mailto:Neels.Brink@incomargroup.com"
moz-do-not-send="true">Neels.Brink@incomargroup.com</a>>
a écrit :<o:p></o:p></p>
</blockquote>
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<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<p class="MsoNormal"> <span
style="mso-fareast-language:EN-ZA"><o:p></o:p></span></p>
<p class="MsoNormal">I created an NDVI in QGis from
Worldview -3 bands. However, the NDVI looks ‘fuzzy’, or
at lower resolution than the original bands. I tried to
find a flag or setting which causes this but do not see
something like it. What could be the reason for this
appearance of the NDVI?<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<div>
<p class="MsoNormal"><span
style="mso-fareast-language:EN-ZA"><image001.jpg><o:p></o:p></span></p>
</div>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<div>
<p class="MsoNormal"><span
style="mso-fareast-language:EN-ZA"><image002.jpg><o:p></o:p></span></p>
</div>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal" style="line-height:105%"><span
style="mso-fareast-language:EN-ZA"> </span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span
style="mso-fareast-language:EN-ZA">_______________________________________________<br>
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<pre class="moz-quote-pre" wrap="">_______________________________________________
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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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