Wake County North Carolina Building Import
To add every missing building footprint in Wake County to OpenStreetMap without creating any duplicates.
The import will begin in early 2019 and may continue for between a week and several months.
Data source site: Open Data Raleigh
Data license: Word for word, the licence state the followingː
Communications made through data.raleighnc.gov will in no way constitute a legal or official notice to the City of Raleigh or its departments or any official or employee of the City of Raleigh for any purpose. Use of the data.raleighnc.gov website constitutes acceptance of this policy. Any information posted here may be considered a public record and may be subject to disclosure to third parties. The City reserves the right to amend these terms of service at any time and without further notice.
Type of license: Custom Link to permission: We contacted the city regarding the section highlighted in bold, and received a promising replyː
Thanks so much for your email. I have had the opportunity to speak with legal and we are going to work on updating the language of our licensing. It will take some time to go through the process but the main points are that we reserve the right to stop any or all data feeds but will not require the discontinued use if you have consumed the data when it was live. Please let me know if you have any questions and thank you for your continued support of Open Data Raleigh.
ODbL Compliance verified: Yes.
OSM Data Files
One time import with this OSMUS Tasking Manager project that will be completed by any local mappers that are interested.
Data Reduction & Simplification
"source"="Open Data Raleigh" and descriptive comments will be used on changesets.
Was already completed with the JOSM validator, which has a validation rule that finds overlapping buildings and buildings inside of other buildings.
For the transformation, I did the followingː
- I downloaded the complete buildings dataset from Raleigh Open Data, & opened it with JOSM.
- Then, I downloaded all existing buildings and shelters and merged the two layers into a single layer.
- Next, I ran the JOSM validator (which took 30 minutes).
- Then, in the validation window, I selected the category "overlapping buildings" and clicked "select". This selected all buildings that overlapped with other buildings. I gave them all the tag "duplicate = yes".
- Then, I did the same with the "building inside of other building" category.
- Next, I used the tool and searched for , copied all selected items, and pasted them into a new layer.
- I then did a bunch of manual cleanup of the data and saved it as a .osm file. You can find that file below.
Data Transformation Results
Data Merge Workflow
A tasking manager site was created to allow anyone to contribute.
- Download buildings in your task.
- Download OSM data in your task.
- Merge the two layers.
- Run the JOSM validator.
- Make sure everything looks good.
- Upload with a dedicated import account.