#127 - San José Sidewalks Import

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Help import sidewalks from a public domain shapefile from the City of San José Public Works Department.

This project is documented in the wiki.

The sidewalk ways we’re importing need to be joined to intersecting roadways, light rail tracks, etc.

In a few places, there is existing sidewalk data in OSM; compare it to the city’s data and choose the more accurate data.

Focus on only importing the sidewalks that exist in the data for the given square, checking to see if it's good, and add intersections to the existing data. Please read the instructions carefully!

If you have any comments or concerns please contact me through osm: 3vivekb.

Created by 3vivekb - Updated - Priority: medium

  Instructions

Entities to Map
sidewalks
Changeset Comment
#osmus-project-127 #c4sj #South-Bay-OSM
When saving your work, please leave the default comment but add what you actually mapped, for example "added buildings and a residential road".

Using JOSM? Please use the dedicated preset.


Please ignore the JOSM xml config above!

This task requires JOSM to load the building outlines in a new layer.

If you are an experienced osm editor or plan to make a lot of imports within this project, please create a username that is "myusername_sjsidewalks_import"

  1. Download JOSM. Enable Remote Remote Control in JOSM's Preferences > Remote Control , the second to last tab. You should also get the utilsplugin2 plugin, which will be extremely helpful.
  2. Under Extra Instructions, click on the here link to add the building outlines in a separate layer (this message only appears after you start a task). If is successfully imported into JOSM you will see "OK" and in JOSM you will see the sidwalks.
  3. Add a newer source of imagery such as DigitalGlobe Premium. Bing is older and my be incorrect.
  4. Check the imagery against the sidewalks and delete any weird spikes in the sidewalk layer.
  5. Select the sidewalks layer and validate the layer, fix all issues (Shift-V to validate, hit 6 or right-click to focus on a specific issue). Fix small gaps in the sidewalks
  6. Connect any little gaps in the sidewalks that should be connected (Push 'A' to activate draw mode, 'S' to go back to select mode. Or select both nodes and hit 'M' to merge.).
    Fixing Sidewalks
  7. Highlight all the imported and fixed sidewalks and zoom out so you can see all at one time (Control-A, then '3'). Download the existing OSM data for this area into the same layer (Ctrl-Shift-Down and uncheck "Download as new layer"). The idea is the sidewalk layer you imported ends up in the same layer as the existing osm data for that area.
  8. Unselect the data, validate, and fix all "Crossing Ways" issues:
  9. Anyplace one of the copied sidewalks intersects with another road (such as a service road) or a way and exists on the same plane, create nodes at the intersections. (Hold shift to select the intersecting way then the sidewalk, press Shift-I to add a node with utilsplugin2) Planarize - fixing intersections
  10. Re-Run validation on the OSM data layer and look for issues around the sidewalks inserted. Be sure to look for intersecting ways errors related to the sidewalks! (Ctrl-A, Shift-V)
  11. Cycle through issues in the category of "Way end node near other higway". Select each and push 6 to zoom in, select the next and push 6 etc. See if any of the issues is easily fixed (such as small gaps in the sidewalks) and fix them, otherwise ignore and use your best judgement.
  12. If there is existing sidewalk data, consider which one is better and use that one and delete the conflict.
  13. Connect sidewalks to existing crossings and intersections.
  14. Do a sanity check on data - Does the sidewalk match up to the imagery? Does everything look aligned?
  15. Start the upload dialog (Ctrl-Shift-Up)
  16. For the brief comment please use YOUR COMMENTS #osmus-project-127 #c4sj #South-Bay-OSM
  17. For data source please use source=San José Public Works Department
  18. Upload data to OSM
  19. Go back to the Tasking Manager and mark the task as done (but not as validated)

  Start contributing

Contributors Done Assigned