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<div class="moz-cite-prefix">Thanks,<br>
<br>
On 02/22/2013 05:17 PM, jentjr wrote:<br>
</div>
<blockquote cite="mid:1361546232824-5036173.post@n6.nabble.com"
type="cite">
<pre wrap="">From a comment on line 74 of main.c it looks like the accumulation map is
required when calculating the Strahler stream order.
</pre>
</blockquote>
<br>
Actually you *can* create a raster stream order map based on
strahler without an accum input.<br>
i.e.:<br>
r.stream.order --o -a streams=str dirs=fdir elev=dtm_full
strahler=str_strahler memory=1500<br>
works fine<br>
???<br>
<br>
<br>
<blockquote cite="mid:1361546232824-5036173.post@n6.nabble.com"
type="cite">
<pre wrap="">
in_acc_opt->key = "accum"; /* required if strahler stream order is
calculated for existing stream network */
in_acc_opt->type = TYPE_STRING;
in_acc_opt->required = NO; /* for now; TO DO: is planned to be optional */
in_acc_opt->answer = NULL;
in_acc_opt->gisprompt = "old,cell,raster";
in_acc_opt->description =
"(Not recommended) Name of accumulation file (r.watershed or
r.stream.extract)";
I believe that you will need to get the accumulation map from r.watershed
first.
Hope this helps,
Justin
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</pre>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
Micha Silver
GIS Consultant, Arava Development Co.
<a class="moz-txt-link-freetext" href="http://www.surfaces.co.il">http://www.surfaces.co.il</a></pre>
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