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<p>Hi Saber:</p>
<p>You can do this directly in symbology. See link below, Use Rule
Based Symbology and "Elev" % 100= 0 to separate all the contours
that are multiples of 100. Set your line symbols and you should
be good to go.<br>
</p>
<p><a class="moz-txt-link-freetext" href="https://gis.stackexchange.com/questions/259875/styling-contours-at-specific-numbers">https://gis.stackexchange.com/questions/259875/styling-contours-at-specific-numbers</a></p>
<p><br>
</p>
<p>Kirk Schmidt<br>
</p>
<div class="moz-cite-prefix">On 3/3/2021 2:15 PM, Saber Razmjooei
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAH=WbRBh8WG0zjfXd+8E5fCPg9gk_=3JJnKr7YpTnkaSvmeuAg@mail.gmail.com">
<div dir="ltr">
<div dir="ltr">Hi Azzurra,
<div><br>
</div>
<div>You can use Raster styling to display it as contours with
minor and major contours:</div>
<div><a
href="https://www.qgis.org/en/site/forusers/visualchangelog314/index.html#feature-raster-layer-contour-renderer"
moz-do-not-send="true">https://www.qgis.org/en/site/forusers/visualchangelog314/index.html#feature-raster-layer-contour-renderer</a><br>
</div>
<div><br>
</div>
<div>Kind regards</div>
<div>Saber</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Wed, 3 Mar 2021 at 18:01,
Azzurra Lentini <<a
href="mailto:azzurralentini@gmail.com"
moz-do-not-send="true">azzurralentini@gmail.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote">
<div dir="ltr">
<div>
<p class="MsoNormal"><span lang="EN-GB">Hi to all,</span></p>
<p class="MsoNormal"><span lang="EN-GB">I have
extracted contours from a dtm raster 20 m resolution
file and the result is a
vector file of contours with 20 m of interval
between the contours. </span></p>
<p class="MsoNormal"><span lang="EN-GB">I would
like to have two different symbols for these
contours: for example black colour
and thickness 1 for the contours with interval of
100 m (0, 100, 200, 300 etc.)
and grey colour and thickness 0.5 for the contours
20, 40, 60, 80, 120, 140 ..
etc.).</span></p>
<p class="MsoNormal"><span lang="EN-GB">What can I
do? </span></p>
<p class="MsoNormal"><span lang="EN-GB">Normally I
create another contours file only for the contours
equidistant 100 m and I put
a different symbol for the 2 layers. </span></p>
<p class="MsoNormal"><span lang="EN-GB">Do you know
other ways without the creation of another file?
maybe rule-based symbology?</span></p>
<p class="MsoNormal"><span><br>
</span></p>
<p class="MsoNormal"><span>Thank you, Azzurra </span></p>
</div>
<div><br>
</div>
-- <br>
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">Lecturer GIS University "Roma
Tre"<br>
</div>
<div dir="ltr">Consultant Environmental Risk
Prevention and Hydrogeology<br>
AZZURRA LENTINI </div>
<div dir="ltr">++++++++++++++++++++++++++<br>
Italy Mobile Tel.: **(39) 338 24 40 676<br>
++++++++++++++++++++++++++<br>
SKYPE azzurrahydro<br>
++++++++++++++++++++++++++</div>
<div>
<p class="MsoNormal"><b><u><span><a
href="mailto:azzurralentini@gmail.com"
target="_blank"
moz-do-not-send="true">azzurralentini@gmail.com</a></span></u></b></p>
<p class="MsoNormal"><b><u><span><a
href="mailto:azzurra.lentini@uniroma3.it"
target="_blank"
moz-do-not-send="true">azzurra.lentini@uniroma3.it</a> </span></u></b><b><u><span> </span></u></b><br>
</p>
</div>
<div dir="ltr">++++++++++++++++++++++++++<br>
*Par respect pour l'environnement,*<br>
<br>
*n'imprimez ce mail qu'en cas d'absolue
nécessité*</div>
</div>
<div dir="ltr"> <br>
<br>
<br>
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-- <br>
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<div dir="ltr">
<div>
<div dir="ltr">
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<div dir="ltr">
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<div dir="ltr">
<div>
<div dir="ltr">Saber Razmjooei<br>
</div>
<div><a
href="http://www.lutraconsulting.co.uk"
target="_blank" moz-do-not-send="true">www.lutraconsulting.co.uk</a><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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