[Qgis-user] mapping bus routes

[Nicolas Cadieux]

Oups!  Forgot the list…

Nicolas Cadieux
https://gitlab.com/njacadieux

> Le 7 oct. 2021 à 17:23, Nicolas Cadieux <njacadieux.gitlab at gmail.com> a écrit :
> 
> Hi,
> 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.  
> 
> In the QGIS models, https://plugins.qgis.org/, 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.
> 
> You will also find a boring YouTube video on my YouTube channel. https://youtu.be/v61PafSByvM
> 
> Nicolas Cadieux
> https://gitlab.com/njacadieux
> 
>>> Le 7 oct. 2021 à 14:17, Hugh Kelley <hghklly at gmail.com> a écrit :
>>> 
>> 
>> Hi all, 
>> 
>> 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. 
>> 
>> 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. 
>> 
>> 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. https://archive.transitapp.com/transit-maps-apple-vs-google-vs-us-cb3d7cd2c362#.e9kcryzg1
>> 
>> 
>> Hugh 
>> 
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