Recent diary entries
Great meeting everyone at Kathmandu and share my completness research. Here’s the link to the slide deck from the talk.
Would like to gather ideas and collaborate with fellow mappers on,
- how best to build & verify gold standard at feature level and
- build an amazing dashboard that help gain insights on completeness relation with contributor behaviour.
Do drop me a message with your suggestions/questions. Happy to talk through this!
Quite excited to be at the SOTM Asia 2017 Conference in Kathamandu this weekend. This year I’ll be talking about my OpenStreetMap readiness assessment work and walk through on how the approach varies from prior art, opening new avenues for mappers to explore data coverage.
If you’re at Kathmandu this weekend, do catch me up for more conversation over a Chiya! 👋
Extract all features without a name tag:
Extract all features that has a name tag
Extract all name tags which contains a particular set of words in the name
Extract all name tags which does not contain a particular set of words in the name
Edits by a user
Combine two queries
#### Extract all features with name tag but without the word
View in the name
name=* && name!~View
All buildings touched by a user in the last one month
user:osmusername && newer:1month && building
user:osmusername && newer:”2016-01-28T19:01:00Z” && building
Continuing from our earlier efforts, our data team at Mapbox and local mappers in Silicon Valley have been diligently tracing missing buildings in San Francisco Bay Area. To date, three Tasking Manager projects are up (#1,#2,#3).
Over 100,000 buildings were traced and validated. Here’s a snapshot of our mapping for Mountain View.
A quick lookup on the present state of Indic language tags in OSM.
Compared to other language tags, this is a miniscule number.
And there is no Indic tags that feature in the top 10 list. However there is some real good work that is being done with
name:kn tags. Personally I would love to see more tags in my mother tongue Tamil and I wish more contributors work towards Indic language tags!
Data improvement in urban areas like Tokyo presents its unique challenges. Quite notable here is the data density. Since JOSM editor has an upper limit on the number of objects that could be fetched in a single download, every task area had to be split further into smaller ones. There were instances, particularly in inner city areas, where a single task was broken to 16 smaller ones! But this was never a deterrent for the 31 enthusiastic mappers who toiled over two weeks to complete the enormous task 🙌
Next in the pipeline is road improvement in Nagoya city.
- Realign and merge major highways (motorway, trunk, primary and secondary)
- Create dual carriageways on major highways with link roads and correct oneways
Do visit the task page on teachosm, http://tasks.teachosm.org/project/104 for instructions on how to go about the task.