Hello,
Is it possible to set the granularity of points for a GPS route? I mean, from Paris to Lyon (700km) I have about 4500 points instead of Mapbox which return maybe 40 points. I save this points on db so 4500 is too much for me.
thank you.
Such a long route with only 40 points this would be a very rough approximation. Under which circumstances would this be sufficient? As zoomed out overview?
If you are using the Route Optimization API: couldn’t you apply a certain path simplification that fits your requirements on the client side?
Or are you using the Routing API?
It’s quite approximative but it’s enought for me, I will build a buffer around it :
Look on mapbox, it’s approximative but enought.
I will search on this zone, it does not need to be very precise.
Maybe I can use a simplification algorithm as posttreatment? Do you have any examples?
Thank you !
There are multiple JS libraries for simplification. But I still don’t understand your use case: why would it make sense to reduce the route to just 40 points? What if the user zooms in? Do you request the API again?
Hello,
In fact I do not display the route for my user, it’s just to found delivery for him. So I store in database route_points for matching and I can not save 4k points per routes (I have 130k routes).
What it matters for me is to build my “bean” :
And for that I do not need so many points.
I tried to use simplify-js but it just does not reduce the number of points…
You probably need to tune the parameters of simplify-js a bit. There usually is a trade-off between removing and keeping too many points so you need to find a value that fits your purposes.