<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<style type="text/css">body p { margin-bottom: 0cm; margin-top: 0pt; } </style>
</head>
<body bidimailui-charset-is-forced="true" text="#000000"
bgcolor="#FFFFFF">
<p>I have a python script from some years ago that should prepare
"station lines" perpendicular to stream reaches at regular
intervals. If you're interested in trying, I'll gladly send it. I
originally wrote the script to work in python 2, so if it's
helpful, I should do the changes needed for python 3.</p>
<p><br>
</p>
<p>Regards, Micha <br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 08/11/2019 11:02, Johannes Radinger
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CABsGe_yTcFRdOqn3oqBjieNixL_h-5v6YO5at01w2b2o5bAbaA@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">
<div>Hi all,<br>
</div>
<div>I've vector lines representing rivers and a set of points.
Now, I'd like to create short lines (e.g. 150 m) that are
perpendicular to the river lines and cross at the coordinates
of the points vector. This is basically to create transects
similar to the tool v.transect. However v.transect creates the
perpendicular lines at regular intervals and I'd like to
create them only for the locations of the points on the river
line. Is there any straight forward tool to accomplish this? I
could retrieve the azimuth of the river lines at each point
(using v.to.db), but how can I extrude a point into a line
with a given length and azimuth? Any suggestions?</div>
<div><br>
</div>
<div>cheers,</div>
<div>Johannes</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<pre class="moz-quote-pre" wrap="">_______________________________________________
grass-user mailing list
<a class="moz-txt-link-abbreviated" href="mailto:grass-user@lists.osgeo.org">grass-user@lists.osgeo.org</a>
<a class="moz-txt-link-freetext" href="https://lists.osgeo.org/mailman/listinfo/grass-user">https://lists.osgeo.org/mailman/listinfo/grass-user</a></pre>
</blockquote>
<pre class="moz-signature" cols="72">--
Micha Silver
Ben Gurion Univ.
Sde Boker, Remote Sensing Lab
cell: +972-523-665918
<a class="moz-txt-link-freetext" href="https://orcid.org/0000-0002-1128-1325">https://orcid.org/0000-0002-1128-1325</a></pre>
</body>
</html>