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    <p>Depends on your QGIS version, from 3.16 onwards you can use the
      overlay-functions to proof if the point and polygonlayer are in a
      spatial relation like intersects or touches and so on. The
      expression for your first rule will be like this one:</p>
    <p><i>"VAL_PROTECTION_EP3" = '1' AND  "TYPE"  = 1 AND 
        overlay_intersects( layer:='pol', filter := ("TYPE" in ('P','E')
        AND "CAT_CANTON" = 2) OR ("TYPE" in ('P','E') AND "CAT_CANTON" =
        3))</i></p>
    <p>In the overlay_intersects-part you have to change the layername
      to your polygon layer.</p>
    <p>If you have an older QGIS Version you can achieve the more or
      less same result with the refFunctions Plugin.</p>
    <p>Hope this helps</p>
    <p>Best regards</p>
    <p>Stefan</p>
    <pre class="moz-signature" cols="72">-- 
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    <div class="moz-cite-prefix">Am 30.08.2021 um 16:36 schrieb
      Jeanneret Cédric:<br>
    </div>
    <blockquote type="cite"
      cite="mid:7ae4578cd8894ad9b95944357059cada@ville-fr.ch">
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      <div class="WordSection1">
        <p class="MsoNormal"
style="mso-margin-bottom-alt:auto;background:#F9F8F6;vertical-align:baseline"><span
            style="font-size:11.5pt;font-family:"Segoe
            UI",sans-serif;color:#242729;mso-fareast-language:FR-CH">I
            would like to use a set of rules to draw features from a
            point_layer that are within a polygon_layer.<o:p></o:p></span></p>
        <p class="MsoNormal"
style="mso-margin-bottom-alt:auto;background:#F9F8F6;vertical-align:baseline"><span
            style="font-size:11.5pt;font-family:"Segoe
            UI",sans-serif;color:#242729;mso-fareast-language:FR-CH">Points
            that answer true to<o:p></o:p></span></p>
        <p class="MsoNormal" style="vertical-align:baseline"><span
style="font-size:10.0pt;font-family:"var(--ff-mono)",serif;border:none
            windowtext 1.0pt;padding:0cm;mso-fareast-language:FR-CH">("VAL_PROTECTION_EP3"
            = '1' AND  "TYPE"  = 1)
            <o:p></o:p></span></p>
        <p class="MsoNormal"
style="mso-margin-bottom-alt:auto;background:#F9F8F6;vertical-align:baseline"><span
            style="font-size:11.5pt;font-family:"Segoe
            UI",sans-serif;color:#242729;mso-fareast-language:FR-CH"
            lang="DE-CH">and that are within polygons that answer true
            to<o:p></o:p></span></p>
        <p class="MsoNormal" style="vertical-align:baseline"><span
style="font-size:10.0pt;font-family:"var(--ff-mono)",serif;border:none
            windowtext 1.0pt;padding:0cm;mso-fareast-language:FR-CH">("TYPE"
            in ('P','E') AND "CAT_CANTON" = 2) OR ("TYPE" in ('P','E')
            AND "CAT_CANTON" = 3)<o:p></o:p></span></p>
        <p class="MsoNormal"
style="mso-margin-bottom-alt:auto;background:#F9F8F6;vertical-align:baseline"><span
            style="font-size:11.5pt;font-family:"Segoe
            UI",sans-serif;color:#242729;mso-fareast-language:FR-CH">should
            be displayed as red dots<o:p></o:p></span></p>
        <p class="MsoNormal"
style="mso-margin-bottom-alt:auto;background:#F9F8F6;vertical-align:baseline"><span
            style="font-size:11.5pt;font-family:"Segoe
            UI",sans-serif;color:#242729;mso-fareast-language:FR-CH">Points
            that answer true to<o:p></o:p></span></p>
        <p class="MsoNormal" style="vertical-align:baseline"><span
style="font-size:10.0pt;font-family:"var(--ff-mono)",serif;border:none
            windowtext 1.0pt;padding:0cm;mso-fareast-language:FR-CH">("VAL_PROTECTION_EP3"
            = '2' AND  "TYPE"  = 1)
            <o:p></o:p></span></p>
        <p class="MsoNormal"
style="mso-margin-bottom-alt:auto;background:#F9F8F6;vertical-align:baseline"><span
            style="font-size:11.5pt;font-family:"Segoe
            UI",sans-serif;color:#242729;mso-fareast-language:FR-CH"
            lang="DE-CH">and that are within polygons that answer true
            to<o:p></o:p></span></p>
        <p class="MsoNormal" style="vertical-align:baseline"><span
style="font-size:10.0pt;font-family:"var(--ff-mono)",serif;border:none
            windowtext 1.0pt;padding:0cm;mso-fareast-language:FR-CH">("TYPE"
            in ('P','E') AND "CAT_CANTON" = 2) OR ("TYPE" in ('P','E')
            AND "CAT_CANTON" = 3)<o:p></o:p></span></p>
        <p class="MsoNormal"
style="mso-margin-bottom-alt:auto;background:#F9F8F6;vertical-align:baseline"><span
            style="font-size:11.5pt;font-family:"Segoe
            UI",sans-serif;color:#242729;mso-fareast-language:FR-CH">should
            be displayed as orange dots<o:p></o:p></span></p>
        <p class="MsoNormal"
style="mso-margin-bottom-alt:auto;background:#F9F8F6;vertical-align:baseline"><span
            style="font-size:11.5pt;font-family:"Segoe
            UI",sans-serif;color:#242729;mso-fareast-language:FR-CH">Points
            that answer true to<o:p></o:p></span></p>
        <p class="MsoNormal" style="vertical-align:baseline"><span
style="font-size:10.0pt;font-family:"var(--ff-mono)",serif;border:none
            windowtext 1.0pt;padding:0cm;mso-fareast-language:FR-CH">("VAL_PROTECTION_EP3"
            = '3' AND  "TYPE"  = 1)<o:p></o:p></span></p>
        <p class="MsoNormal"
style="mso-margin-bottom-alt:auto;background:#F9F8F6;vertical-align:baseline"><span
            style="font-size:11.5pt;font-family:"Segoe
            UI",sans-serif;color:#242729;mso-fareast-language:FR-CH"
            lang="DE-CH">and that are within polygons that answer true
            to<o:p></o:p></span></p>
        <p class="MsoNormal" style="vertical-align:baseline"><span
style="font-size:10.0pt;font-family:"var(--ff-mono)",serif;border:none
            windowtext 1.0pt;padding:0cm;mso-fareast-language:FR-CH">("TYPE"
            in ('P','E') AND "CAT_CANTON" = 1)<o:p></o:p></span></p>
        <p class="MsoNormal"
style="mso-margin-bottom-alt:auto;background:#F9F8F6;vertical-align:baseline"><span
            style="font-size:11.5pt;font-family:"Segoe
            UI",sans-serif;color:#242729;mso-fareast-language:FR-CH">should
            be displayed as yellow dots<o:p></o:p></span></p>
        <p class="MsoNormal"
style="mso-margin-bottom-alt:auto;background:#F9F8F6;vertical-align:baseline"><span
            style="font-size:11.5pt;font-family:"Segoe
            UI",sans-serif;color:#242729;mso-fareast-language:FR-CH">I
            cannot find the right combination of expressions for the
            rule to work.<o:p></o:p></span></p>
        <p class="MsoNormal"
          style="background:#F9F8F6;vertical-align:baseline"><span
            style="font-size:11.5pt;font-family:"Segoe
            UI",sans-serif;color:#242729;mso-fareast-language:FR-CH">Any
            help would be appreciated: what would a working syntax be
            for such a rule to work in QGIS Layer Styling panel ?<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:"Open
            Sans",sans-serif"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:"Open
            Sans",sans-serif"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;font-family:"Open
            Sans",sans-serif;color:black;mso-fareast-language:FR-CH">Cédric
            Jeanneret</span><span style="mso-fareast-language:FR-CH"><o:p></o:p></span></p>
        <p class="MsoNormal"><o:p> </o:p></p>
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