Hi, You have multiple tools that can help. You can use the QGIS network plugins. It’s already installed but you need to activate the « processing » plugin. You will find multiple shortest path analysis.
You can also install the Chinese postman plugin made to calculate the most efficient route. You will find a lot of other plugins if you search the plugin directory with the tag « network analysis ». The plugin QNEAT3 is well done and well documented. It was interesting OD matrixes (origine-destination). You will most likely need to look at home grown plugins for this type of work. https://plugins.qgis.org/plugins/tags/network-analysis/ https://plugins.qgis.org/plugins/chinesepostman/ https://root676.github.io/ Nicolas Cadieux https://gitlab.com/njacadieux > Le 29 juin 2021 à 05:45, Antonio Mattei <[email protected]> a écrit : > > > Dears Members, > I have read all the Qgis manual. > I found it a fundamental aid for navigation and I also found this very > interesting. > However, I couldn't understand out if Qgis can solve my problem or not… > . > At first glance I don't think so but I want to be sure of this. > So I try to explain better what I have to do, what I am looking for. > For the moment I have to chart a course without considering the prevailing > weather, winds and currents. > This is because I will have to leave on April 12, 2022 from Monaco in the > Mediterranean and return there after having touched 150 ports in an > expedition that will last about a year around the globe. > I accepted the assignment on behalf of the World Health Organization for a > Post Covid19 project. I have always been involved in Fundraising and NGOs > (Non-Governmental Organizations) and have been commander of commercial > boats since 1983. > The expedition will depart from Monaco (Monte Carlo, between Italy and > France) and will have to touch the 150 ports of the UN countries that have > access to the sea, before returning to Monte Carlo after about a year. > This is to raise awareness in all countries of the world and to bring > unused vaccines in richer countries to poorer ones. > It is an expedition in which all participants will be volunteers funded by > the European Union, the UN and the WHO. > We will start with an icebreaker and 8 different commanders will alternate > in command of which I will be the first and last and it is also up to me to > calculate the route. > Starting from Montecarlo then we will have to touch all the countries of > the world. > I am looking for help to do this. > My idea is to start from Monte Carlo and first touch all the countries of > the Mediterranean and the Black Sea, then go through Suez and > Circumnavigate Africa clockwise after also touching Pakistan and India, go > up to the Baltic Sea and Iceland and get to New York. > From there go down to Cuba and then up to Suriname and then go back, go all > the Caribbean and pass in the Pacific from Panama to do the whole Pacific > coast, Cape Horn up to Rio Grande in Brazil and then up to Japan and > Australia. > Do all the Far East and then return to the Mediterranean from the Indian > Ocean and Suez. > But I'm not sure this is the shortest route. > This is why I am looking for a software or an app capable of automatically > calculating the best route starting from Monte Carlo and returning to Monte > Carlo after having touched 150 different ports. > Not a precise navigation route, which then should take into account the > weather, currents and winds and that we can do just before leaving, but a > rough route. A route that tells me in which sequence it would be better to > touch all the ports to cover the minimum distance and save as much fuel as > possible. > If you can help me or if you think Qgis is capable of doing this let > me know. > Greetings > Antonio > _______________________________________________ > Qgis-user mailing list > [email protected] > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
_______________________________________________ Qgis-user mailing list [email protected] List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
