[GRASS-user] Simple Isochrones for a catchment area for a store

[retrofuture]

Hi! 

I want to build easy isochrones using either v.isochrones or v.net.iso on a
map around one point. 
However, I am not interested in the fastest way but I want to have
isochrones in meters, eg. 

Point A: Isochrone Alpha - 100m, Beta - 200m, ... 

I am new to Grass and as of now I haven't figured out a way to build this. 

At the moment I have a network map delivered by a city, so it includes
different types of roads and speed_limits, etc. 



Is there an easy way to build these rings fast? 



///Update, currently investigating the r.catchment feature 


Thanks!



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