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<p>Hi again,</p>
<p>It seems like LizMap has some support for temporal controller:</p>
<p><a href="https://docs.lizmap.com/next/en/publish/lizmap_plugin/time_manager.html">https://docs.lizmap.com/next/en/publish/lizmap_plugin/time_manager.html</a></p>
<p>But as I said - this works through sending vector data and client side rendering - so not the full capabilities of the QGIS styling engine.</p>
<p>Greetings,</p>
<p>Andreas</p>
<p id="reply-intro">On 2024-06-06 06:41, Andreas Neumann via QGIS-User wrote:</p>
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<div>Hi BJ,</div>
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<div>No - I don't think this is possible. But I am not fully up-to-date about QWC2, as I am not an active user. You might want to ask at the separate QWC2 user mailing list: <a href="https://lists.osgeo.org/mailman/listinfo/qgis-qwc2" target="_blank" rel="noopener noreferrer">https://lists.osgeo.org/mailman/listinfo/qgis-qwc2</a></div>
<div> </div>
<div>Personally, I have doubts about the feasibility of integrating the temporal controller with QGIS server and any web client that relies on raster images. QGIS server is sending raster images of map extents. That approach wouldn't scale very well, due to the additional lag between client and server. To get an acceptable performance, it would mean that one would have to exchange vector features (geometry and attributes) and render client-side - and then you loose the QGIS symbology features ...</div>
<div> </div>
<div>It might be more feasible to use QGIS wasm (web assembly) for this purpose. But it is still a young project. In QGIS wasm, the QGIS rendering engine runs inside the browser. It is also generating raster images, but it would hold the original GIS data in the client and also render in the client, eliminating the network lag between server and client. There you would maintain the QGIS rendering and labeling capabilities.</div>
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<div>If you have a serious interest in that feature, one could further discuss if an implementation of the temporal controller with QGIS wasm would be an option. But it would require an investment in the qgis-js API/bindings and a client side implementation of the temporal controller with some web framework.</div>
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<div>Best regards,</div>
<div>Andreas</div>
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<div class="v1gmail_attr" dir="ltr">On Wed, 5 Jun 2024 at 23:58, BJ Raval via QGIS-User <<a href="mailto:qgis-user@lists.osgeo.org" rel="noreferrer">qgis-user@lists.osgeo.org</a>> wrote:</div>
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<div>Hi Andreas,</div>
<div>I am an occasional desktop QGIS user but this is my first time asking a question for help.</div>
<div>I would like to use the Temporal Controller on a web page served by QWC2 web client. Is it possible to use Temporal Controller by a user on the client side on the web browser?</div>
<div> </div>
<div>A detailed answer of "how-to" would be much appreciated if this is possible.</div>
<div>Sincere thanks!</div>
<div>BJ</div>
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<div><br />--<br />Andreas Neumann</div>
<a href="http://QGIS.ORG" target="_blank" rel="noopener noreferrer">QGIS.ORG</a> board member (treasurer)</div>
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