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<p>Hi Jonathan,</p>
<p>Thanks for sharing this information. I don't know anything better.</p>
<p>While looking at some services that I know personally, I also found out that others services are listed twice, because a machine might have a DNS alias. That is also something to consider - perhaps sort out machines that have identical GetCapabilities responses and just the DNS name varies.</p>
<p>I agree, the numbers probably wouldn't change significantly.</p>
<p>Thanks and greetings,</p>
<p>Andreas</p>
<p id="reply-intro">On 2020-06-09 13:14, Jonathan Moules wrote:</p>
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<div class="pre" style="margin: 0; padding: 0; font-family: monospace"><span style="white-space: nowrap;">Hi Andreas,</span><br /><span style="white-space: nowrap;">Sure, happy to share.</span><br />There's a little on the About page: <a href="https://www.geoseer.net/about.php" target="_blank" rel="noopener noreferrer">https://www.geoseer.net/about.php</a> and then scattered around blog posts (the ones with the "GeoSeer" tag are probably best for that: <a href="https://www.geoseer.net/blog/?t=GeoSeer" target="_blank" rel="noopener noreferrer">https://www.geoseer.net/blog/?t=GeoSeer</a> ), but put simply - We scrape a lot of different sources and metadata catalogs and get the services from them. Then we request not only the GetCapabilities that was declared, but also make educated guesses as to what else might be on the box and request those too.<br /><br />It's not perfect, but to the best of my knowledge it's by far the largest such index in the world, and more importantly, it's *current*. Everything in there responded with a valid GetCapabilities document with at least one meaningful named dataset when it was last scraped within the last few weeks.<br /><br /><span style="white-space: nowrap;">Pertaining to your given services, GeoSeer has:</span><br /><a href="http://geoweb.so.ch/wms/sogis_natgef.wms?" target="_blank" rel="noopener noreferrer">http://geoweb.so.ch/wms/sogis_natgef.wms?</a> and a few others on that sub-domain, as well as some on the subdomain: <a href="http://www.sogis1.so.ch/cgi-bin/sogis/sogis_natgef.wms?" target="_blank" rel="noopener noreferrer">http://www.sogis1.so.ch/cgi-bin/sogis/sogis_natgef.wms?</a> - both are now defunct I see which is why they're not in the database.<br /><br /><span style="white-space: nowrap;">Thanks for the URL, I've added it for scraping.</span><br /><br />
<blockquote type="cite" style="padding: 0 0.4em; border-left: #1010ff 2px solid; margin: 0">So I wonder how many other QGIS server installations may not be in your database?</blockquote>
Alas that's a "unknown unknown"; there's no way to know (I can't think of a way to find out anyway; suggestions welcome). However the vast majority of the time when I come across a new service manually (i.e. from following various mailing lists like this), it turns out it's already in the index, so I think it's reasonably comprehensive at this point.<br /><br />While missing servers may change the absolute number of QGIS Installations, they're very unlikely to change the proportions. For a sample-size this large I'd expect the proportions to remain largely the same, certainly for deployments.<br /><br /><span style="white-space: nowrap;">Hope that's of interest and answers the question,</span><br /><span style="white-space: nowrap;">Cheers,</span><br />Jonathan<br /><br /><br /><span style="white-space: nowrap;">On 2020-06-09 10:45, Andreas Neumann wrote:</span>
<blockquote type="cite" style="padding: 0 0.4em; border-left: #1010ff 2px solid; margin: 0"><br /><span style="white-space: nowrap;">Hi Jonathan,</span><br /><br />Can you share with us how you harvest your information on available public OGC services? You probably have that information published somewhere - so if you could point me towards this URL, it would help.<br /><br />I noticed that all of the services of our province (my employer) can't be found, as an example.<br /><br /><span style="white-space: nowrap;">Here is the start point:</span><br /><br /><span style="white-space: nowrap;"><a href="https://so.ch/verwaltung/bau-und-justizdepartement/amt-fuer-geoinformation/geoportal/geodienste/wms-web-map-service/" target="_blank" rel="noopener noreferrer">https://so.ch/verwaltung/bau-und-justizdepartement/amt-fuer-geoinformation/geoportal/geodienste/wms-web-map-service/</a></span><br /><br /><span style="white-space: nowrap;">and the GetCapabilities link:</span><br /><br /><span style="white-space: nowrap;"><a href="https://geo.so.ch/api/wms?SERVICE=WMS&REQUEST=GetCapabilities&VERSION=1.3.0" target="_blank" rel="noopener noreferrer">https://geo.so.ch/api/wms?SERVICE=WMS&REQUEST=GetCapabilities&VERSION=1.3.0</a></span><br /><br />So I wonder how many other QGIS server installations may not be in your database? Of course I know you don't claim full coverage, but it would still be good to know how you harvest your data.<br /><br /><span style="white-space: nowrap;">Thanks for clarifying and greetings,</span><br /><br />Andreas<br /><br /></blockquote>
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