Mappa Mercia is a project to grow OpenStreetMap in the West Midlands, UK. We run community events, provide training and support local organisations wishing to open up their data.

Latest from the blog

Joy Diversion: Mapping in Manchester

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Saturday 19th May saw the UK OpenStreetMap community and Open Data Manchester join forces for an afternoon of exploring central Manchester. Several mappers from the Midlands made the trip and boy, did we... READ MORE

Conflation & Validation: OSM Conflator

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When Ilya approached the UK OpenStreetMap community about incorporating third party data (Shell petrol stations) into OSM he had already ran the data through his “OSM Conflator” tool. As part of the project... READ MORE

Petrol stations with a fixme tag

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As we described when we kicked off this quarters UK project to map petrol stations, recent community validation of third party (import) data has highlighted much outdated and erroneous data within OpenStreetMap :-(.... READ MORE