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The input has to be the *flow direction* raster that is created by
r.watershed.<br>
<br>
From the manpage (as Helmut suggested):<br>
<dl>
<dt><em>direction</em></dt>
<dd>Flow direction: name of input direction map produced by <em>r.watershed</em>
or
<em>r.stream.extract</em>. If r.stream.extract output map is
used, it only has non-NULL
values in places where streams occur. NULL (nodata) cells are
ignored, zero and
negative values are valid direction data if they vary from -8 to
8 (CCW from
East in steps of 45 degrees). Direction map shall be of type
CELL values. Region
resolution and map resolution must be the same.</dd>
</dl>
It's best to keep these questions on the maillist.<br>
<br>
<div class="moz-cite-prefix">On 2017-12-25 14:44 PM, Shane Carey
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CA+jRDxCFzuQxZesyma=J_ZHaQsuqqOAKOrpuwHjV6SDN-4cCwg@mail.gmail.com">
<div dir="ltr">
<div>Sorry to bothering you again Micha, just one last question!
When I run it, I get back raster dcell maps for gradient for
the entire area and not just the streams. I presume I have to
use the river network I previously created to extract the
values at the streams. <br>
<br>
</div>
Thanks<br>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Mon, Dec 25, 2017 at 10:39 AM, Shane
Carey <span dir="ltr"><<a
href="mailto:careyshan@gmail.com" target="_blank"
moz-do-not-send="true">careyshan@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<div dir="auto">Thanks, you're a star Micha!</div>
<div dir="auto">Thanks</div>
<div>
<div class="h5"><br>
<div class="gmail_quote">
<div>On Luan 25 Noll 2017 at 08:12, Micha Silver
<<a href="mailto:tsvibar@gmail.com"
target="_blank" moz-do-not-send="true">tsvibar@gmail.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="direction:ltr" text="#000000"
bgcolor="#FFFFFF"> <br>
<br>
<div
class="m_-135662454652557432m_-4764126609661775122moz-cite-prefix">On
2017-12-25 00:18 AM, Shane Carey wrote:<br>
</div>
<blockquote type="cite">
<div dir="auto">Hi all,</div>
<div dir="auto"><br>
</div>
<div dir="auto">Justing wondering has anyone
used r.stream.slope module?</div>
<div dir="auto"><br>
</div>
<div dir="auto">If so, what is it actually
calculating?</div>
</blockquote>
<br>
</div>
<div style="direction:ltr" text="#000000"
bgcolor="#FFFFFF"> It calculates for each
individual stream reach the difference in
elevation, the average slope, and as a bonus you
can get the minimum and maximum curvature
(change in slope). <br>
</div>
<div style="direction:ltr" text="#000000"
bgcolor="#FFFFFF"> <br>
<blockquote type="cite">
<div dir="auto"><br>
</div>
<div dir="auto">Thanks to all who has helped
me throughout the year! I've only recently
started using Grass gis and find it
absolutely brilliant!</div>
<div dir="auto">Nollaig Shona daoibh - happy
Christmas in Irish!!</div>
</blockquote>
<br>
</div>
<div style="direction:ltr" text="#000000"
bgcolor="#FFFFFF"> Cheers<br>
<br>
</div>
<div style="direction:ltr" text="#000000"
bgcolor="#FFFFFF">
<blockquote type="cite">
<div>-- <br>
</div>
<div
class="m_-135662454652557432m_-4764126609661775122gmail_signature"
data-smartmail="gmail_signature">
<div>
<div>
<div>
<div>
<div>
<div>Le gach dea ghui,<br>
</div>
<div><span
style="color:rgb(61,133,198)"><b><span
style="background-color:rgb(255,255,255)"><i>Shane Carey</i></span></b></span></div>
<div><span
style="color:rgb(61,133,198)"><b><span
style="background-color:rgb(255,255,255)"><i>GIS and Data Solutions
Consultant</i></span></b></span><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<br>
<fieldset
class="m_-135662454652557432m_-4764126609661775122mimeAttachmentHeader"></fieldset>
<br>
</blockquote>
</div>
<div style="direction:ltr" text="#000000"
bgcolor="#FFFFFF">
<blockquote type="cite">
<pre>______________________________<wbr>_________________
grass-user mailing list
<a class="m_-135662454652557432m_-4764126609661775122moz-txt-link-abbreviated" href="mailto:grass-user@lists.osgeo.org" target="_blank" moz-do-not-send="true">grass-user@lists.osgeo.org</a>
<a class="m_-135662454652557432m_-4764126609661775122moz-txt-link-freetext" href="https://lists.osgeo.org/mailman/listinfo/grass-user" target="_blank" moz-do-not-send="true">https://lists.osgeo.org/<wbr>mailman/listinfo/grass-user</a></pre>
</blockquote>
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<div style="direction:ltr" text="#000000"
bgcolor="#FFFFFF"> <br>
<pre class="m_-135662454652557432m_-4764126609661775122moz-signature" cols="72">--
Micha Silver
Ben Gurion Univ.
Sde Boker, Remote Sensing Lab
+972-523-665918</pre>
</div>
</blockquote>
</div>
</div>
</div>
</div>
<div class="HOEnZb">
<div class="h5">
<div dir="ltr">-- <br>
</div>
<div class="m_-135662454652557432gmail_signature"
data-smartmail="gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>Le gach dea ghui,<br>
</div>
<div><span style="color:rgb(61,133,198)"><b><span
style="background-color:rgb(255,255,255)"><i>Shane Carey</i></span></b></span></div>
<div><span style="color:rgb(61,133,198)"><b><span
style="background-color:rgb(255,255,255)"><i>GIS and Data Solutions
Consultant</i></span></b></span><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
</div>
<br>
<br clear="all">
<br>
-- <br>
<div class="gmail_signature" data-smartmail="gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>Le gach dea ghui,<br>
</div>
<div><span style="color:rgb(61,133,198)"><b><span
style="background-color:rgb(255,255,255)"><i>Shane
Carey</i></span></b></span></div>
<div><span style="color:rgb(61,133,198)"><b><span
style="background-color:rgb(255,255,255)"><i>GIS
and Data Solutions Consultant</i></span></b></span><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Micha Silver
Ben Gurion Univ.
Sde Boker, Remote Sensing Lab
+972-523-665918</pre>
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