[R-sig-Geo] Distance calculating between points according to a river network

[Florian Betz]

Dear Tristan,

no R solution, but maybe a starting point: You can check out the Grass 
GIS tool v.net.distance 
(https://grass.osgeo.org/grass72/manuals/v.net.distance) what should 
help you. GRASS tools can also be integrated in R via the rgrass7 package.

Good luck!

Flo

Am 25.01.2017 um 11:02 schrieb Tristan Bourgeois:
> Hi,
>
> I'm a R new user and this is also my first post on this mailing list.
>
> I'm currently working on several project with R and I still have not found
> a solution for one :
>
> To be concise I'm working with shapefiles representing on a delimited area :
>
> - sewage plant (SpatialPointsDataFrame)
> - water quality measurement stations (SpatialPointsDataFrame)
> - hydrographic network (SpatialLineDataFrame)
>
> What I want to do is to calculate the distance between each sewage stations
> and each measurement stations following the river route.
>
> For now, I have snapped all my points on the river and created a new layer
> with both type of point (sewage stations and measurement) in order to split
> the lines by the point layer.
>
> I'm looking for a way to get a kind of distance's matrix.
>
> Does anybody has already worked on a similar project ? I'm kind of lost
> with all the R packages and functions so any pistes or proposals or idea
> will be greatly appreciate.
>
>
> PS : As I said this is my first post. If I'm not clear about my issue or if
> I'm not respecting any posting rules don't hesitate to tell me about.
>
>
> Cheers
>
>