Potential road matching improvements - Githubissues

smnorris / roadintegrator

Quickly merge multiple BC road datasets into a single layer for Cumulative Effects analysis

Apache License 2.0

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Potential road matching improvements #15

Closed smnorris closed 3 years ago

smnorris commented 3 years ago

clean up snapping artifacts by comparing lengths of input features to features that are added to output with matching id, if there are several small features added (and still within a certain distance), they can probably safely be deleted
before performing the 7m snapping/matching, snap candidate layer nodes (ends, intersections) to reference layer nodes within tolerance (or slightly higher). If more than 1 reference node is within our matching tolerance distance for a given candidate layer node, match to closest already unmatched reference node.
break candidate roads at intersections with reference roads and vice versa

For other possibilities, see:

https://github.com/ssinger/roadmatcher (and http://wiki.openstreetmap.org/wiki/RoadMatcher) https://gis.stackexchange.com/questions/60072/snapping-start-and-end-nodes-of-lines-to-other-lines-in-postgis http://blog.mathieu-leplatre.info/use-postgis-topologies-to-clean-up-road-networks.html https://medium.com/the-downlinq/spacenet-road-detection-and-routing-challenge-part-ii-apls-implementation-92acd86f4094 https://medium.com/strava-engineering/activity-grouping-the-heart-of-a-social-network-for-athletes-865751f7dca https://github.com/ngageoint/hootenanny https://open.library.ubc.ca/cIRcle/collections/ubctheses/24/items/1.0398182

smnorris commented 3 years ago

I'll open individual issues for improving output / feature requests and move the references to README