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<div class="moz-cite-prefix">On 03/10/2019 23:56, Rich Shepard
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:alpine.LNX.2.20.1910031352370.23502@salmo.appl-ecosys.com">Reading
the manual pages for v.stream.network, v.stream.order, and
<br>
v.stream.profiler in the extensions doc I see details for the
input options
<br>
but all descriptions refer to raster files.
<br>
<br>
</blockquote>
<p>The v.stream.* modules all take vector maps as input.</p>
<p><br>
</p>
<blockquote type="cite"
cite="mid:alpine.LNX.2.20.1910031352370.23502@salmo.appl-ecosys.com">Are
there more detailed docs that show examples using the vector
modules
<br>
along with the raster modules?
<br>
<br>
I've a complex, extensive, river network as a vector file. I've
not
<br>
extracted streams, basins, or watersheds from the DEM and I'd like
to
<br>
run the v.stream.* modules on my vector stream network. Possible?
<br>
<br>
</blockquote>
<p><br>
</p>
<p>Maybe yes, but if this refers to the project that you've posted
about recently, then you have a high resolution LIDAR-based DEM of
the basin. These v.stream.* modules are intended to work with
vector outputs from the r.stream.* modules.</p>
<p>If you are going to ignore that and use a vector stream network
from some other source, then be aware:</p>
<p>1- This alternate stream network must be topologically correct</p>
<p>2- Stream vector segments should all be in downstream direction
(the outlet reach *must* be directed downstream).</p>
<p>3- You might not be able to make use of the DEM for other
analyses, since it won't match the stream network.</p>
<p><br>
</p>
<p><br>
</p>
<blockquote type="cite"
cite="mid:alpine.LNX.2.20.1910031352370.23502@salmo.appl-ecosys.com">TIA,
<br>
<br>
Rich
<br>
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</blockquote>
<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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