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<p>Hi Carlos;</p>
<p>It seems you have the calculation of azimuth figured out. I
would generate a new filed in the attribute table and use the
field calculator to calculate your bearings. If you are
comfortable with python, you can create a script as well. <br>
</p>
<p> If you are using a projected coordinate system, take note that
North would be actually be grid north and your calculate azimuth
would be in relation to it. If you want to reference actual true
north, you would have to calculate the convergence between true
and grid north for your project area. If you want the coordinates
referencing magnetic north (perhaps for field work), then you
would also have to calculate the magnetic declination for your
project.</p>
<p> Kirk Schmidt<br>
</p>
<div class="moz-cite-prefix">On 4/8/2021 6:30 PM, Sebastian Gutwein
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAED_52oVRhSg==7XED8rq6mLC_cW49AEOiE-_9tGOPzT6VYYJw@mail.gmail.com">
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<div dir="ltr">Carlos-
<div>Interesting problem- </div>
<div>You might get better responses on stack exchange. </div>
<div>I have the same confusion as Ujaval. Each side of your
polygon will have a different bearing. </div>
<div>If all you care about is the average angle then you can use
this expression main_angle( $geometry) </div>
<div>This will return azimuth of the polygon in degrees from
north. </div>
<div>I don't know how to convert this to bearing in QGIS. </div>
<div><br>
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<div dir="ltr" class="gmail_attr">On Thu, Apr 8, 2021 at 3:28 PM
carlos h <<a href="mailto:carloslda256@gmail.com"
moz-do-not-send="true">carloslda256@gmail.com</a>> wrote:<br>
</div>
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<div dir="ltr">
<div dir="ltr"><br>
</div>
<div dir="ltr"> Hello, for example have this in the
attribute table:</div>
<div dir="ltr"> <br>
<a href="https://ibb.co/wWn4PfM" target="_blank"
moz-do-not-send="true">https://ibb.co/wWn4PfM</a></div>
<div dir="ltr"><br>
</div>
<div dir="ltr">What I need is to have the bearing in the
polygon's attribute table.<br>
<br>
Thanks</div>
<div dir="ltr"><br>
</div>
<div>CA </div>
<div><br>
</div>
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<div><br>
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<div dir="ltr" class="gmail_attr">El jue, 8 abr 2021
a las 10:49, Ujaval Gandhi (<<a
href="mailto:ujaval@spatialthoughts.com"
target="_blank" moz-do-not-send="true">ujaval@spatialthoughts.com</a>>)
escribió:<br>
</div>
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rgb(204,204,204);padding-left:1ex">
<div dir="ltr">Can you elaborate with an example?
It's not clear what the bearing would be for a
polygon.<br clear="all">
<div>
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<div dir="ltr" class="gmail_attr">On Thu, Apr 8,
2021 at 8:50 PM carlos h <<a
href="mailto:carloslda256@gmail.com"
target="_blank" moz-do-not-send="true">carloslda256@gmail.com</a>>
wrote:<br>
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style="margin:0px 0px 0px
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<div dir="ltr"><br>
Hello, nice to write here.<br>
<br>
How can I generate the bearing in the
attribute table of a polygon? the bearing
not in azimuth, but for example N30E etc<br>
<br>
Thanks<br>
<br>
CA<br>
<br>
<br>
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<pre class="moz-signature" cols="72">--
Kirk Schmidt, MScF, BScF, RPF
General Manager
Nortek Resource Solutions Inc.
RR # 1
Thorburn, NS
B0K 1W0
Tel (902) 922.3607
Email: <a class="moz-txt-link-abbreviated" href="mailto:kirk@nortekresources.com">kirk@nortekresources.com</a>
Web: <a class="moz-txt-link-abbreviated" href="http://www.nortekresources.com">www.nortekresources.com</a></pre>
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