After filtering OSM data using Osmosis, I'm missing a significant portion of the power lines in major countries like the US, Canada, Spain, China, India etc. The attached images show what I have for the US and India. I've abstracted my data as per the SciGrid model (https://www.power.scigrid.de/pages/general-information.html) so that the lines are represented as the crow flies between nodes. It seems that OSM must have these missing lines somewhere because OpenInfraMap displays them: https://openinframap.org/#5.99/34.763/-115.582/P.

My process was that I filtered OSM data using Osmosis for all objects with key=power, value=* as well as objects with key=route, value=power to extract power lines and substations. During the abstraction process I kept only those lines with values: "line" or "cable", and only nodes with the following values: "substation", "sub_station", "station", "plant", or "generator". Having contacted the creator of OpenInfraMap, it seems that the absence of the "minor_line" value cannot explain many of the missing lines. What are some candidate reasons for why this might be happening?

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asked 19 Aug, 21:07

kev_7's gravatar image

kev_7
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accept rate: 0%


When filtering OSM data you always need to ensure that any referenced objects are also included, otherwise the geometry cannot be built. Is it possible that you have accidentally dropped the nodes from your data set that are required to build the power line geometry? In Osmosis you have to use the --used-node option to avoid that problem.

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answered 19 Aug, 21:34

Frederik%20Ramm's gravatar image

Frederik Ramm ♦
78.1k886911207
accept rate: 24%

I have used the --used-node option though its possible I've misused it. The code is the following:

osmosis ^ --read-pbf file=D:\Kevin\EGC_Project\data\planet-210322.osm.pbf ^ --tag-filter accept-relations route=power ^ --used-way ^ --used-node ^ --buffer outPipe.0=route ^ --read-pbf file=D:\Kevin\EGC_Project\data\planet-210322.osm.pbf ^ --tag-filter accept-relations power= ^ --used-way ^ --used-node ^ --buffer outPipe.0=power ^ --read-pbf file=D:\Kevin\EGC_Project\data\planet-210322.osm.pbf ^ --tag-filter reject-relations ^ --tag-filter accept-ways power= ^ --used-node ^ --buffer outPipe.0=pways ^ --read-pbf file=D:\Kevin\EGC_Project\data\planet-210322.osm.pbf ^ --tag-filter reject-relations ^ --tag-filter reject-ways ^ --tag-filter accept-nodes power=* ^ --buffer outPipe.0=pnodes ^ --merge inPipe.0=route inPipe.1=power ^ --buffer outPipe.0=mone ^ --merge inPipe.0=pways inPipe.1=pnodes ^ --buffer outPipe.0=mtwo ^ --merge inPipe.0=mone inPipe.1=mtwo ^ --write-pbf file=D:\Kevin\EGC_Project\data\global_power_210322.osm.pbf

(19 Aug, 21:48) kev_7
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question asked: 19 Aug, 21:07

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last updated: 19 Aug, 21:48

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