location allocationopen-source-gissoftware-recommendations
I'm looking for open source tools for location allocation modelling (eg planning public health facilities). Preferably in a GIS environment. I know GRASS somewhat, but v.net.alloc doesn't seem to take account of demand.
I don't know if SAGA or Sextante have something.
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Try routeXL I'm not sure how many nodes you can max out on though. Here's an example of a 12 city output
Address drop down to change/modify the addresses you just addedfind route for it to compute itHEre's a screenshot of a run I did:
[Disclaimer - I am the author of the UI part of this software]
ODL Studio is an open source desktop application for planning vehicle routes - so it will solve your problem. It's free and we have people using it in many different countries throughout the world. Download from here http://www.opendoorlogistics.com/ or watch the tutorial video here https://www.youtube.com/watch?v=0DJdubVWX_A
It takes an Excel as input data which will help you. You can play around with the cost-per-km and cost-per-hour to have it automatically optimise for most efficient by time or mileage (given the size of your problem it will probably find the most optimal solution as well).
There is the personal route-planning software portatour which supports multiple stops and Excel upload.
Here is a screenshot of a generated Route on an iPad:
Disclaimer: I work for portatour.
Check out Optimo Route - there is a free trial you can use. Import multiple addresses from MS Excel and easily plan optimal routes. You can also set things like service time (time you will spend at the location) and time windows (specific times you need to be at the location).
Routes can be exported to a GPS device (Garmin, Navigon, TomTom) or MS Excel.
Disclaimer: I work for Optimo Route.
Also take a look at Speedy Route - another optimal route planner website. You can bulk upload addresses, and then either print out the optimal route, or export the results to Excel via CSV.
Finding the most efficient route from a list of addresses sounds a lot like the Traveling Salesman Problem, one of the most studied problems in computer science. It's one thing to calculate a straight line distance but adding street routes makes this highly unlikely that you'll find an optimal distance.
I might have answered part of your problem on another page. This may not be useful but I'll include it anyway.
The short answer is that there isn't one especially if you're looking for a TransCAD or Emme/2 alternative as there is no open source package that comes close to those.
The closest you can get are some micro modelling solutions like Transims or matsim that I find lacking of a lot of needed data, methodologies, tools, or network handling that are available in commercial software.
UrbanSim is an open source agent based modelling solution but as far as I recall it doesn't handle transportation networks.
On the other hand, I have developed 3 or 4 travel demand models based on QGIS. Although, I can't share the code with you, I can tell you what I did:
Capacity -or- use best practices that are acceptable for the jurisdiction you're modeling. link ID, link name, speed, length, number of lanes, capacity per lane, total capacity, and directionalityU_turns allowed?, left_penalty, right penalty, average_Delay, accepted delay, green_cycle_time_per_legI compared my Hodgepodge model to TransCAD and it was pretty close; however, mine was 10 times as slow due to me doing it all in python and not in an organized way.
Let me know if you have more questions as I spend a lot of time working in this topic.
Also, it would help to know where you are and what's the scale you're looking for, municipal, versus state, versus national.
Best Answer
You could try Flowmap. It is specially designed to analyse flow patterns.
You can find it here: http://flowmap.geog.uu.nl/