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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Adding a link to the same question asked earlier in gis.stackexchange:
<a href="https://gis.stackexchange.com/questions/433659/mapserver-7-arithmetic-expressions-do-not-work-on-style-attributes/433664#433664">
https://gis.stackexchange.com/questions/433659/mapserver-7-arithmetic-expressions-do-not-work-on-style-attributes/433664#433664</a>.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">-Jukka Rahkonen-<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>Lähettäjä:</b> MapServer-users <mapserver-users-bounces@lists.osgeo.org>
<b>Puolesta </b>Andi p3 Domi<br>
<b>Lähetetty:</b> torstai 16. kesäkuuta 2022 12.05<br>
<b>Vastaanottaja:</b> mapserver-users@lists.osgeo.org<br>
<b>Aihe:</b> [mapserver-users] Fwd: MapServer 7 arithmetic expressions do not work on STYLE attributes?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p><span style="font-size:12.0pt">I am trying to port my code from MapServer 5 (Oracle) to MapServer 7 (PostgreSQL), but I am encountering an issue when trying to apply arithmetic expressions in the style class. So previously in MapServer 5 I would have something
like:<o:p></o:p></span></p>
<pre><code>DATA "geom from (select pk, geom, size from sizes_of_thing) USING srid 3788 version 11g"<o:p></o:p></code></pre>
<pre><code>CLASS<o:p></o:p></code></pre>
<pre><code> MAXSCALEDENOM 5001<o:p></o:p></code></pre>
<pre><code> STYLE<o:p></o:p></code></pre>
<pre><code> COLOR [size*2]<o:p></o:p></code></pre>
<p><span style="font-size:12.0pt">Which worked perfectly fine: But if I convert it to MapServer 7 and PostgreSQL like:<o:p></o:p></span></p>
<pre><code>DATA "geom from (select pk, geom, size from sizes_of_thing sot) USING unique pk USING srid=3788"<o:p></o:p></code></pre>
<pre><code>CLASS<o:p></o:p></code></pre>
<pre><code> STYLE<o:p></o:p></code></pre>
<pre><code> COLOR [size*2]<o:p></o:p></code></pre>
<p><span style="font-size:12.0pt">Throws an error such as:<o:p></o:p></span></p>
<pre><code>msPostGISLayerWhichShapes(): Error (ERROR: column "size*2" does not exist<o:p></o:p></code></pre>
<p><span style="font-size:12.0pt">By any chance are these expressions not supported anymore in MapServer 7/PostGIS or am I doing something wrong?<o:p></o:p></span></p>
<p><span style="font-size:12.0pt">What I have tried so far is to write something like<o:p></o:p></span></p>
<pre><code>SIZE [size]*2<o:p></o:p></code></pre>
<pre><code>SIZE ([size]*2)<o:p></o:p></code></pre>
<p><span style="font-size:12.0pt">create an expression like:<o:p></o:p></span></p>
<pre><code>EXPRESSION ("size2" "[size]*2")<o:p></o:p></code></pre>
<p><span style="font-size:12.0pt">And use it in something like:<o:p></o:p></span></p>
<pre><code>SIZE [size2]<o:p></o:p></code></pre>
<p><span style="font-size:12.0pt">create a validation variable such as:<o:p></o:p></span></p>
<pre><code>VALIDATION<o:p></o:p></code></pre>
<pre><code>"size2" '[size]*2'<o:p></o:p></code></pre>
<p><span style="font-size:12.0pt">and then<o:p></o:p></span></p>
<pre><code>SIZE [size2]<o:p></o:p></code></pre>
<p><span style="font-size:12.0pt">But it seems like none of them work.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
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