<table cellspacing="0" cellpadding="0" border="0"><tr><td valign="top"><p>hi,</p>
<p>what is the spatial resolution and coordinate system of the data. </p>
<p>also more about float point (decimals).<br><br></p>
<p><a href="https://uk.overview.mail.yahoo.com/mobile/?.src=Android">Sent from Yahoo Mail on Android</a></p>
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<span style="font-weight:bold">From:</span>
</b>
Steve Ball <steve.ball@mpingoconservation.org>; <br>
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<span style="font-weight:bold">To:</span>
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Tanzania GIS Users Group Discussion <tzgisug@mail.habari.co.tz>; <br>
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<span style="font-weight:bold">Subject:</span>
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[TZGISUG] Raster analysis in QGIS <br>
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<span style="font-weight:bold">Sent:</span>
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Thu, Feb 20, 2014 4:55:12 PM <br>
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<font face="Calibri">Howdy folks,<br>
<br>
Not sure this group is the best forum to ask this question, but I
thought I'd give it a go. I have a raster of biomass values
(derived from RADAR data, the values are in floating point format
if that matters). I need to stratify that into 5t/ha bands, i.e.
where the value ranges from 0 to 5, then 5 to 10 etc. Displaying
the raster visually in these terms is easy enough, but actually
converting the data into this form appears much harder. Then I
would like to be able to check the distribution of vector point
data across those strata (ought to be straightforward), and also
to compute the total area of each such stratum (not yet sure how I
do this). It would be nice, not least for future replicability, to
accomplish this all in QGIS without resorting to </font><font
face="Calibri"><font face="Calibri">ArcView</font>.<br>
<br>
Any pointers on relevant instructions on the interwebs most
appreciated, since am struggling to guess the appropriate search
terms. Can the Sextante plugin help?<br>
<br>
cheers, Steve<br>
<br>
ps. Am currently using QGIS 1.8 but could switch to 2.0.1 if that
would do the trick.<br>
________________________________________________<br>
Steve Ball<br>
Chief Technical Adviser<br>
Mpingo Conservation & Development Initiative<br>
<a rel="nofollow" class="moz-txt-link-abbreviated" target="_blank" href="http://www.mpingoconservation.org">www.mpingoconservation.org</a> <br>
<br>
<br>
</font>
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