OpenStreetMap
Fixing the tagging errors in Rajahmundry
Posted by Jothirnadh on 16 February 2016 in English. Last updated on 14 September 2018.In my previous hometown mapping of Rajahmundry post, I pointed out some of the data errors present. I contacted most of the OSM contributors and found that most of the data was added as part of a local muncipality project. It is nice to see that my local municipality is adopting open data in order to reach citizens and it will be the best opportunity to provide awareness of open data among the local citizens.
The data they added were from local surveys. I personally verified some points and I can attest that the locations are accurate, however, I found several cases of wrong tagging. For example, they mostly used the Name instead of name. According to OSM convention, keys should be the lower case.
Wrongly tagged point features
To fix this, I extracted all the point features within the city using overpassturbo and exported that data into JOSM. There were a total of 480 point features tagged as Name instead of name. I selected all the point features in JOSM and retagged them with name tag. The names are now properly rendered in OSM.
Names are now rendered, but more work is needed
Next actions:
- There are more features that were not properly tagged, I’m now categorizing these errors in order to fix them.
- All the mapped buildings are wrongly mapped. There is no connection with the buildings on the ground/imagery to the ones mapped. I’m proposing a clean-up of this area which I posted for discussion to the mailinglist.
- Communicate with the contributors from http://mana-rajahmundry.org/ to help them fix the errors.
Suggestions and comments from the OSM community members are always welcome. Happy mapping.
Discussion
Comment from Xapitoun on 16 February 2016 at 13:32
Hello, do you know why the names are on capital letters, it’s not so good to read them, you need more space to display.
Comment from Jothirnadh on 16 February 2016 at 13:56
Hello Xapitoun, I’m also facing the same problem. They just wanted to contribute the data, but never thought of the visual rendering problems. I’m trying to figure out an easy way to change them to lowercase alphabets as changing one by one is hard (there are 480 points to be fixed). If you know any way to fix them directly, please let me know.
Comment from Glassman on 16 February 2016 at 16:09
Did you notice any pattern in which editor was used? I did a quick search of my state without one hit.
Clifford
Comment from Glassman on 16 February 2016 at 16:09
Did you notice any pattern in which editor was used? I did a quick search of my state without one hit.
Clifford
Comment from Jothirnadh on 17 February 2016 at 06:03
@Glassman all the data they uploaded is through JOSM version 1.5. First they collected the data through field survey. They classified the collected data into different categories such as parks, ATMs, Hotels etc., and uploaded each category in one go.