On Thu, 17 Oct 2019 at 22:56, Paul Wittle <paul.wit...@dorsetcouncil.gov.uk> wrote: > > Hi, > > I guess that is kind of why I’m raising this today really (now as a feature > request https://github.com/qgis/QGIS/issues/32295). We are looking at what we > can do to help QGIS in this area but unfortunately it might end up more as my > time on it than money.
Hi Paul, I'd be happy to provide some mentoring/guidance in this work if you're looking for advise on how to get started and what approach to take. (The first step is getting a stable local build environment up and running ;) Nyall > > > > Time will tell if that is better or worse > > Paul > > > > From: Régis Haubourg <regis.haubo...@gmail.com> > Sent: 17 October 2019 13:13 > To: Paul Wittle <p.wit...@dorsetcc.gov.uk> > Cc: qgis-developer@lists.osgeo.org > Subject: Re: [QGIS-Developer] Add support for travelling sales routing, > Z-level and turn restrictions > > > > Hi again, > > your points are very valid. Did your company considered in helping QGIS in > that area ? > > Regards, > > Régis > > > > Le jeu. 17 oct. 2019 à 13:25, Paul Wittle <paul.wit...@dorsetcouncil.gov.uk> > a écrit : > > Hi, > > Thanks for your reply. > > So the rationale here is fairly simple really; we already have tools in QGIS > but I'm not convinced they provide adequate results without turn restrictions > and/or z-levels. The travelling sales is a completely different point to > which I think your comments apply more directly. > > The tools provided as default are basic but I do think there is a distinction > between entry level basic and simply providing a wrong answer. At present > there is no way to stop it routing off bridges (as far as I can tell) so I'd > like to try and fix it. > > The ability to do basic routing appears to be a big selling point to my > organisation and hence my priority on it. I accept that may not be the case > for others. > > The problem with pgrouting is that it relies on Postgres and we currently > have Microsoft SQLserver and Oracle. My goal is to encourage our users to use > QGIS but the decision about database choices is made at a high level and so > ideally I'd like to be able to achieve something sensible without having to > change database provider. > > I think it is also important to note that the existing tools appear to be > pretty close to being able to do what I need anyway. I'm really trying to > improve the accuracy with turn restrictions and improve the usability a small > amount by allowing routing via waypoints. Routing via waypoints is basically > just a slightly customisable batch function of what already exists and I've > already achieved that using my scripts. > > As I said earlier, I accept that travelling sales may be a step too far but > it seemed a logical target to me as I've spent a chunk of my career working > as a transport planner and I see TSP routing as the entry point to network > analysis really. > > I may have missed some other options as I'm not aware of routing I can use > from GRASS etc? > > I completely agree with your final points and the purpose of this email / the > proposal was to start to gather opinions on what might or might not work / be > sensible and to gather a list of people that are interested really. > > Thanks again for your feedback as it is helpful for me to work out where my > views sit in comparison to other QGIS users > Paul > > -----Original Message----- > From: Régis Haubourg <regis.haubo...@gmail.com> > Sent: 17 October 2019 11:48 > To: Paul Wittle <p.wit...@dorsetcc.gov.uk> > Cc: qgis-developer@lists.osgeo.org > Subject: Re: [QGIS-Developer] Add support for travelling sales routing, > Z-level and turn restrictions > > Hi Paul > For my information, what is the rationale of having it 100% in QGIS? I tend > to prefer the approach of relying on dedicated lib or tools. We already have > pgrouting, GRASS, python libs, various projects around. > I'm currently worried of the move we have of trying to do everything inside > QGIS always, which starts to be a BIG project. Adding features should be done > together by gathering maintainers, bug triagers all the time in mind. > Regards > Régis > > Le jeu. 17 oct. 2019 à 10:10, Paul Wittle <paul.wit...@dorsetcouncil.gov.uk> > a écrit : > > > > Hi, > > > > > > > > I’ve just added an enhancement proposal > > (https://github.com/qgis/QGIS-Enhancement-Proposals/issues/159) for some > > work I would like to be involved with. I hope that is the right place to > > put it for discussion but I’m assuming there may also be some chat about it > > on here so I thought I’d start a thread. > > > > > > > > I have a young family so my intention to get developing in my spare time > > has been hampered by my lack of spare time but I think this is an area I > > would like to get involved with and I believe my current employer is > > supportive of the proposal as well so hopefully if I can kick something off > > then this might be a good starting point for me to get involved as a > > developer. > > > > > > > > I’d be keen to hear others thoughts and opinions and please accept my > > apologies if I’ve missed a similar discussion somewhere else and it turns > > out to be duplicate feature proposal. > > > > > > > > Many thanks, > > > > Paul > > > > This e-mail and any files transmitted with it are intended solely for > > the use of the individual or entity to whom they are addressed. 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It may contain > unclassified but sensitive or protectively marked material and should be > handled accordingly. Unless you are the named addressee (or authorised to > receive it for the addressee) you may not copy or use it, or disclose it to > anyone else. If you have received this transmission in error please notify > the sender immediately. All traffic may be subject to recording and/or > monitoring in accordance with relevant legislation. Any views expressed in > this message are those of the individual sender, except where the sender > specifies and with authority, states them to be the views of Dorset Council. > Dorset Council does not accept service of documents by fax or other > electronic means. 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All traffic may be subject to recording and/or > monitoring in accordance with relevant legislation. Any views expressed in > this message are those of the individual sender, except where the sender > specifies and with authority, states them to be the views of Dorset Council. > Dorset Council does not accept service of documents by fax or other > electronic means. Virus checking: Whilst all reasonable steps have been taken > to ensure that this electronic communication and its attachments whether > encoded, encrypted or otherwise supplied are free from computer viruses, > Dorset Council accepts no liability in respect of any loss, cost, damage or > expense suffered as a result of accessing this message or any of its > attachments. 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