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    Can't you just export the reflectance raster to an "x,y,z" file?
    Using gdal_translate, choose the output format "-of XYZ". You can do
    this in QGIS, or using GRASS you can also export to a .csv file.<br>
    <br>
    <br>
    <div class="moz-cite-prefix">On 04/18/2018 08:44 AM, Joshua Rust
      wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CA+LLJSjoG7nugmc=FNeXiLFp-syriCyc3VxZ1jJq9zqV-7L3pw@mail.gmail.com">
      <div dir="ltr">Hi,
        <div><br>
        </div>
        <div>I am working with an agricultural research team analyzing
          multispectral imagery taken from a UAV over fields
          containing plots with different nitrogen treatments. I created
          a grid over my geotiff in QGIS, and have run zonal statistics
          on this layer and compared the output from this to actual leaf
          analysis to derive a correlation. That is looking nice.</div>
        <div>What I wish to do now, however, is to obtain <i>each</i>
          individual reflectance value for <i>each</i> pixel in my grid
          plots. So, for example, zonal statistics tells me there are
          22348 pixels in a plot and it tells me the max, min, median
          etc. I would like to see the values for each of the 22348
          pixels and work with that. It will be a monstrous file I know
          but I can live with that.</div>
        <div>Is there a plugin that will quickly export this info for me
          to .csv or txt?</div>
        <div><br>
        </div>
        <div>Cheers</div>
        <div><br>
        </div>
        <div>Josh<br clear="all">
          <div><br>
          </div>
          -- <br>
          <div class="gmail_signature" data-smartmail="gmail_signature">
            <div dir="ltr">
              <div>
                <div dir="ltr">
                  <p><span
style="LINE-HEIGHT:115%;FONT-FAMILY:'Arial','sans-serif';COLOR:#c20041;FONT-SIZE:9pt"><br>
                    </span></p>
                  <p><span
style="LINE-HEIGHT:115%;FONT-FAMILY:'Arial','sans-serif';COLOR:#c20041;FONT-SIZE:9pt">Joshua
                      Rust</span><span
style="LINE-HEIGHT:115%;FONT-FAMILY:'Arial','sans-serif';COLOR:#004080;FONT-SIZE:9pt">
                      | Technical Officer | Soils Research |</span></p>
                  <p><span
style="LINE-HEIGHT:115%;FONT-FAMILY:'Arial','sans-serif';COLOR:#c20041;FONT-SIZE:9pt">NSW
                      Department of Primary Industries</span><span
style="LINE-HEIGHT:115%;FONT-FAMILY:'Arial','sans-serif';COLOR:#004080;FONT-SIZE:9pt">
                    </span></p>
                  <p><span
style="LINE-HEIGHT:115%;FONT-FAMILY:'Arial','sans-serif';COLOR:#004080;FONT-SIZE:9pt">1243
                      Bruxner Hwy Wollongbar NSW 2477 </span></p>
                  <p><span
style="LINE-HEIGHT:115%;FONT-FAMILY:'Arial','sans-serif';COLOR:#c20041;FONT-SIZE:9pt">T</span><span
style="LINE-HEIGHT:115%;FONT-FAMILY:'Arial','sans-serif';COLOR:#004080;FONT-SIZE:9pt">:
                      02 6626 1252 | </span><span
style="LINE-HEIGHT:115%;FONT-FAMILY:'Arial','sans-serif';COLOR:#c20041;FONT-SIZE:9pt">F</span><span
style="LINE-HEIGHT:115%;FONT-FAMILY:'Arial','sans-serif';COLOR:#004080;FONT-SIZE:9pt">:
                      02 6628 3264 | </span><span
style="LINE-HEIGHT:115%;FONT-FAMILY:'Arial','sans-serif';COLOR:#c20041;FONT-SIZE:9pt">E</span><span
style="LINE-HEIGHT:115%;FONT-FAMILY:'Arial','sans-serif';COLOR:#004080;FONT-SIZE:9pt">:
                      <a href="mailto:Joshua.rust@dpi.nsw.gov.au"
                        target="_blank" moz-do-not-send="true">Joshua.rust@dpi.nsw.gov.au</a>
                    </span></p>
                  <p style="margin-bottom:0pt">
                  </p>
                  <p><span
style="LINE-HEIGHT:115%;FONT-FAMILY:'Arial','sans-serif';COLOR:#c20041;FONT-SIZE:9pt">W</span><span
style="LINE-HEIGHT:115%;FONT-FAMILY:'Arial','sans-serif';COLOR:#004080;FONT-SIZE:9pt">:
                      <a href="http://www.dpi.nsw.gov.au/"
                        target="_blank" moz-do-not-send="true">www.dpi.nsw.gov.au</a></span></p>
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    <br>
    <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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