hi, After executing the following steps for shortest path in grass i get below error: echo "update roads set travelcost=5 where cat=1" | db.execute echo "update roads set travelcost=20 where cat=2" | db.execute echo "update roads set travelcost=40 where cat=3" | db.execute echo "update roads set travelcost=60 where cat=4" | db.execute echo "update roads set travelcost=80 where cat=5" | db.execute echo "select * from roads" | db.select
Then we can run the 'd.path' with our assigned travel costs: d.path map=roads afcol=travelcost abcol=travelcost error:Building graph: ERROR: Column type not supported Can anyone help me out with this
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