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graphhopper / map-matching

The map matching functionality is now located in the main repository https://github.com/graphhopper/graphhopper#map-matching
https://www.graphhopper.com/open-source/
Apache License 2.0
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give user control of filtering before map-matching #92

Open kodonnell opened 7 years ago

kodonnell commented 7 years ago

As discussed starting here, we may want to allow users to be prevent all filtering (and hence include all input points in the map match result).

A second possible use case - one may want the 'https://github.com/graphhopper/map-matching/blob/master/matching-core/src/main/java/com/graphhopper/matching/MapMatching.java#L259-L261' to be greater than 2 * measurementErrorSigma - to e.g. 'smooth' the result, or maybe for testing quality i.e. #89.

INRIX-Trang-Nguyen commented 6 years ago

I've added a separate configuration parameter called gpxFilterThreshold which is applied to filterGPXEntries (rather than 2*measurementErrorSigma), We have a need to tune the level of filtering of GPX points prior to map matching. It is a simple change but I can submit a pull request if someone can give me access. Thanks, Trang