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<p class="MsoNormal">I’ve had an interesting couple of days dealing with PDF sizes. We have a very large vector layer of flood model output, being put into an A3 map covering a large area.<o:p></o:p></p>
<p class="MsoNormal">Initially this produced a 5MB ish PDF, but at some stage the PDF size jumped to 30MB. It looks like the new “simplify geometries to reduce output size” option was not working.<o:p></o:p></p>
<p class="MsoNormal">We were able to get around this by forcing the layer to render as a raster in the layer properties.<o:p></o:p></p>
<p class="MsoNormal">A couple of days later we decided the layer should have 100% opacity instead of 80%.<o:p></o:p></p>
<p class="MsoNormal">The opacity displayed correctly in the main map and layout, but in the PDF exports it stayed stubbornly at 80%.<o:p></o:p></p>
<p class="MsoNormal">Turning off the force to render as raster allowed the opacity to display correctly again. The file size stayed low too, so simplify geometries seems to work again.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">At this stage we have solved the practical problem, but I’m still curious about the underlying issue.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Switching back to render as raster broke it again.<o:p></o:p></p>
<p class="MsoNormal">Re-adding the shapefile did not work.<o:p></o:p></p>
<p class="MsoNormal">Forcing another layer to render as raster resulted in both correct behaviour on the new layer, and fixing the problem on the old layer.<o:p></o:p></p>
<p class="MsoNormal">Turning off the forcing on the second layer, results in the first layer playing up again.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Initial issues were using 3.10.1 now on 3.12.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Anyone have a clue what might be going on?<o:p></o:p></p>
<p class="MsoNormal">Seems like there might be a cached version of the rasterization somewhere, but it recurs even if I change the colour.<o:p></o:p></p>
<p class="MsoNormal">I notice raster layers have opacity set in a different place to vector layers, so perhaps the opacity level for the generated raster layer has somehow been saved somewhere.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="color:#1F497D;mso-fareast-language:EN-GB">Michael Dufty</span></b><span style="color:#1F497D;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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