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<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Georgia",serif;mso-fareast-language:EN-US">Fascinating topic indeed. You might be interested in the upcoming Schematic Mapping Workshop, see
<a href="https://www.ruhr-uni-bochum.de/schematicmapping/">https://www.ruhr-uni-bochum.de/schematicmapping/</a>
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Georgia",serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Georgia",serif;mso-fareast-language:EN-US">If you check out some of the papers produced in that series (and their references), you will discover links to the two "branches" of this
field: the artistic/manual and the algorithmic/automation , plus interesting links to HCI and usability research connected to it...<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:"Georgia",serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><i><span style="font-family:"Georgia",serif;color:black">-- <o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span style="font-family:"Georgia",serif;color:black">Barend Köbben<o:p></o:p></span></i></p>
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<p class="MsoNormal"><span lang="NL" style="font-size:12.0pt;font-family:"Georgia",serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">Qgis-user <qgis-user-bounces@lists.osgeo.org> on behalf of Andreas Neumann <a.neumann@carto.net><br>
<b>Date: </b>Friday, 8 October 2021 at 09:09<br>
<b>To: </b>David Strip <qgis-user@stripfamily.net><br>
<b>Cc: </b>Qgis List <qgis-user@lists.osgeo.org><br>
<b>Subject: </b>Re: [Qgis-user] mapping bus routes<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">and yes - the problem is really not simple, but indeed very challenging.<o:p></o:p></span></p>
<p><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Most transit maps today are not done in a GIS, but by designers in a graphics applications, like Adobe-Illustrator. The process is usually not automated, but manual.<o:p></o:p></span></p>
<p><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">However, I believe a semi-automated approach would be great to have. For some, the outcome might be satisfactory, for others not - and these could start with (Q)GIS and continue later in a graphics
package.<o:p></o:p></span></p>
<p><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Andreas<o:p></o:p></span></p>
<p id="reply-intro"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">On 2021-10-08 08:54, Andreas Neumann wrote:<o:p></o:p></span></p>
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<p><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Hi,<o:p></o:p></span></p>
<p><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Besides on what was discussed here on the list already, I can add the following information: the Swiss QGIS user group has mandated Nyall Dawson to carry out a couple of days of research exactly
on this topic - kind of a feasibility study if it would be possible to draw such network maps "on the fly" / automatically - with transit maps and hiking maps (multiple parallel hiking routes) in mind.<o:p></o:p></span></p>
<p><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">I believe Nyall will work on this before the end of the year.<o:p></o:p></span></p>
<p><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Of course we cannot promise anything - but based on the outcome of this study, there might be follow-up work pending. If there is interest from other users we might want to organize an institutional
crowd funding initiative.<o:p></o:p></span></p>
<p><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">This won't help you immediately - but it might be good for you to know that the problem is on the radar. If there is a positive outcome in the study, there might be implementation work pending
next year.<o:p></o:p></span></p>
<p><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Greetings,<o:p></o:p></span></p>
<p><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Andreas<o:p></o:p></span></p>
<p id="v1reply-intro"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">On 2021-10-07 23:53, David Strip wrote:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">For a transit map, it seems the offset would not be constant. Consider two bus routes that overlap along a single street in their routes. On that street, the two lines typically
would be offset to opposite sides of the line representing the street. On the rest of the route, however, the route would be shown as lying directly over the centerline, not offset to either side. Life gets even more complicated when multiple routes overlap
with different numbers of other routes at various points on the map. Or at least that's what I've typically seen on transit maps.
<br>
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On 10/7/2021 3:30 PM, Nicolas Cadieux wrote: <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Hi,
<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">You can also trim the lines in the symbology (at least in QGIS 3.20) as well as giving it an offset. That will insure that intersection are not
overlapping in the offset.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Nicolas Cadieux
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><a href="https://gitlab.com/njacadieux" target="_blank">https://gitlab.com/njacadieux</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Le 7 oct. 2021 à 17:23, Nicolas Cadieux
<a href="mailto:njacadieux.gitlab@gmail.com"><njacadieux.gitlab@gmail.com></a> a écrit :<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Oups! Forgot the list...<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Nicolas Cadieux
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><a href="https://gitlab.com/njacadieux" target="_blank">https://gitlab.com/njacadieux</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Le 7 oct. 2021 à 17:23, Nicolas Cadieux
<a href="mailto:njacadieux.gitlab@gmail.com"><njacadieux.gitlab@gmail.com></a> a écrit :<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Hi,
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">You can automatically draw an offset by adding a offset in the symbology. Things get more complicated when line vectorization changes directions as the offset flips side depending
on, for example, if the line is drawn from A to B or B to A. <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">In the QGIS models, <a href="https://plugins.qgis.org/" target="_blank">https://plugins.qgis.org/</a>, go to models then Fix Directional Network models 1,2 and 3. That will
help you find problems (like disconnected lines) but also identify all the lines that are flipped. You can then flip them manually or figure out an algorithm to do it automatically.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">You will also find a boring YouTube video on my YouTube channel. <a href="https://youtu.be/v61PafSByvM" target="_blank">https://youtu.be/v61PafSByvM</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Nicolas Cadieux
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><a href="https://gitlab.com/njacadieux" target="_blank">https://gitlab.com/njacadieux</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Le 7 oct. 2021 à 14:17, Hugh Kelley
<a href="mailto:hghklly@gmail.com"><hghklly@gmail.com></a> a écrit :<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Hi all,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">I'm wondering if anyone has any good tricks for mapping bus routes. The key problem is defining how to offset lines where the routes overlap.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">I've handled this by chopping up the lines and offsetting in postgis according to some st_dwithins and st_intersections but wanted to see if there is anything in the wide world
of QGIS that I'm not aware of.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">My understanding is that it's a fairly significant challenge to do a great job with it. A company called transitapp had an interesting blog post about it a while ago.
<a href="https://archive.transitapp.com/transit-maps-apple-vs-google-vs-us-cb3d7cd2c362#.e9kcryzg1" target="_blank">
https://archive.transitapp.com/transit-maps-apple-vs-google-vs-us-cb3d7cd2c362#.e9kcryzg1</a><o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Hugh
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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