[GRASS-user] Re: Drivetime Isochrones

[RKiTect]

Thanks for your help...

unfortunately i am using the GUI and i must have an input for the 'nodes'
section. my centre layer doesn't show up for inputting into this... so i
think my point file requires some sort of pre-processing, but not sure...

if you try running the gui tool you will see what i mean... inputs required
for arcs and nodes, but a standard grass pointfile does not show up in nodes
dropdown box... 

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