[GIS] Difference between Trip and Route in Google Transit

googleroutetransit

I am developing a transit webapp using Google Transit, while referring to documentation, i see two different datasets (trips.txt and routes.txt) but i can't clarify the difference between them.

Best Answer

Here's the documentation from Google: https://developers.google.com/transit/gtfs/reference

In this model, a "trip" occurs along a "route". I think the simplest difference can been seen in the fact that a "route" has no directionality, it's just a line along which a transit vehicle travels. So if you look only at the route, you don't know which direction along the line anything is travelling: you need a "trip" to know that.

I guess you could say that a "route" exists on the ground. And a "trip" is what happens when the transit vehicle travels on along the route.

(note I had to use the word "when" in that last sentence... which indicates that a "trip" extends a "route" with some time information)

Related Solutions

[GIS] How to calculate multiple travel times using gmapsdistance

I would suggest doing it within a loop. Here is a suggestion on how to do it

origin<-c("New+York","Washington+DC")
destination<-c("Philadelphia+PA","Willimington+DE","Harrisburg+PA")
NO<-length(origin)
ND<-length(destination)
time<-matrix(0, nrow = NO, ncol = ND)
for (i in 1:1:NO){
    for(j in 1:1:ND){
        time[i,j]<-gmapsdistance(origin[i],destination[j],mode="driving")$Time
    }
}

I have developed some preliminary code in Python in order to process multiple queries at the same time. You can find the preliminary verison in this link: https://github.com/rodazuero/gmapsdistancePY but you will have to adapt it yourself to your own need. I hope this helps.

Rodrigo

[GIS] How to automatically generate a route between locations

OSM Tools:

My recommendation would be to use OSM tools for QGIS which you can download as a plugin. OSM tools was created by Nils Rode and is an adaptation of the OSMroute plugin which uses the OpenRouteService API.

Simply download the plugin and request an API key, once you have this you simply use the routing tab (the other tab is for accessibility e.g. isochrones). You can either pick a coordinate from the map or use point shapefiles for your start and end locations.

I believe it limits you to 40 routes per minute and 500 a day, so you may have to split your dataset in two.

pgRouting:

If you are comfortable using PostGIS then the pgRouting is a great extension which can be run behind QGIS and then brought in. This has a wide array of functionality. There is a plugin for QGIS but I believe it is fairly basic at the moment.

Best Answer

Related Solutions

[GIS] How to calculate multiple travel times using gmapsdistance

[GIS] How to automatically generate a route between locations

Related Question