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<p>Hi,</p>
<p>Depending on what you are doing and what kind of results you are
looking for, could you simply use "Polygonize" and then clean
those results. If your map are in RGB only, you could do a raster
classification analysis before hand. Line would follow pixels at
first but those could be fixed using various vector tools.</p>
<p>Just a thought!</p>
<p>Nicolas<br>
</p>
<div class="moz-cite-prefix">On 2022-06-16 11:26 a.m., Firstname
Lastname via Qgis-user wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAAyYZQJzTGyeR7zNoR8S-GTndAEUDx_tVLAWruK8Wd5_3dgJVw@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">i am a qgis newby and i am beginning a large
project that involves digitizing several geology maps. i am
trying to determine the best way to manage the digitizing and
avoid extra work.
<div>my question to the group is: If i have several coloured
polygons that are adjacent to each other, is there an
efficient way to digitize one polygon and then use one edge of
that polygon for the adjacent polygon so that i dont have to
redigitize the same edge twice and so that i will have
precisely overrlapping polys with no gaps? should i digitize
one polygon, export and rename it? can i digitize one have of
the next polygon and somehow merge it with the now re-imported
polygon? </div>
<div>is there a more efficient way to do this?</div>
<div><br>
</div>
<div>many thanks<br>
<div>
<div><br>
</div>
-- <br>
<div dir="ltr" class="gmail_signature"
data-smartmail="gmail_signature">
<div dir="ltr">Byron Veilleux, MSc. P.Geo
<div>Conjugate Geologic Services Limited</div>
<div>Calgary, Alberta Canada</div>
<div><a href="mailto:byron@conjugategeo.com"
target="_blank" moz-do-not-send="true"
class="moz-txt-link-freetext">byron@conjugategeo.com</a></div>
<div><br>
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<br>
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</blockquote>
<pre class="moz-signature" cols="72">--
Nicolas Cadieux
<a class="moz-txt-link-freetext" href="https://gitlab.com/njacadieux">https://gitlab.com/njacadieux</a></pre>
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