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<div class="moz-cite-prefix">On 27/05/2013 22:36, Marcello Benigno
wrote:<br>
</div>
<blockquote
cite="mid:CAKPVhY+TrY4UqLXjkWVu2Zc+or259x8iA1hoPZ5eP4AVpmM9jA@mail.gmail.com"
type="cite">Hi Micha,
<div><br>
</div>
<div>About:</div>
<div><br>
</div>
<div><i>Not sure I understand the logic of taking the highest
value<br>
</i>
<div><br>
</div>
<div>This was defined by an agronomist, I also do not understand
why =/</div>
<div><br>
</div>
<div>However, your answer is exactly what I need, did not know
r.series, thank you!</div>
<div><br>
</div>
<div>If you can help me also in this tip, I would be very
grateful, I'm reclassifying the slope as follows:</div>
<div><br>
</div>
<div>
<div>r.mapcalc class_1 = 'if(slope <= 2.0, 1, null())'</div>
<div>r.mapcalc class_2 = 'if(2.0 < slope <= 5, 2,
null())'</div>
<div>r.mapcalc class_3 = 'if(5 < slope <= 10, 3,
null())'</div>
<div>r.mapcalc class_4 = 'if(10 < slope <= 15, 4,
null())'</div>
<div>r.mapcalc class_5 = 'if(15 < slope <= 45, 5,
null())'</div>
<div>r.mapcalc class_6 = 'if(45 < slope <= 70, 6,
null())'</div>
<div>r.mapcalc class_7 = 'if(slope > 70, 7, null())'</div>
<div><br>
</div>
<div>r.mapcalc slope.reclass = class_1 + class_2 + class_3 +
class_4 + class_5 + class_6 + class_7</div>
</div>
<div><br>
</div>
<div>How do I create a single expression for this problem?</div>
</div>
</blockquote>
<br>
How about using r.reclass ?<br>
Create a text file "slope_reclass.txt" which contains rows:<br>
0 thru 2 = 1<br>
2 thru 5 = 2<br>
5 thru 10 = 3<br>
...<br>
70 thru 100 = 7<br>
<br>
then run<br>
r.reclass in=slope out=slope_rc rule=slope_reclass.txt<br>
<br>
Be aware that the reclass map is not a "real" raster. If you need to
use it for other things, then a second r.mapcalc expression will be
necessary to create on on-disk raster map. Such as:<br>
r.mapcalc slope_reclass=slope_rc<br>
<br>
Regards,<br>
Micha<br>
<br>
<blockquote
cite="mid:CAKPVhY+TrY4UqLXjkWVu2Zc+or259x8iA1hoPZ5eP4AVpmM9jA@mail.gmail.com"
type="cite">
<div>
<div><br>
</div>
<div>Regards</div>
<div>-- <br>
<b>Marcello Benigno B. de Barros Filho</b><br>
<font size="1">Prof. do Curso Superior de Tecnologia em
Geoprocessamento - IFPB<br>
Mestre em Ciências Geodésicas e Tecnologias da Geoinformação
- UFPE</font>
<div>
<font size="1">Doutorando em Tecnologia Ambiental e Recursos
Hídricos - UFPE</font><font size="1"><br>
</font><font size="1"><a moz-do-not-send="true"
href="http://profmarcello.blogspot.com" target="_blank">http://profmarcello.blogspot.com</a></font>
<div>
<a moz-do-not-send="true"
href="http://about.me/marcello.benigno" target="_blank"><font
size="1">http://about.me/marcello.benigno</font></a></div>
</div>
</div>
</div>
<br>
This mail was received via Mail-SeCure System.<br>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
Micha Silver
GIS Consulting
052-3665918
<a class="moz-txt-link-freetext" href="http://www.surfaces.co.il">http://www.surfaces.co.il</a>
</pre>
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