[Imports] For comment: import of 532 bicycle repair station locations

[Bryce Nesbitt]

On Sun, Jan 25, 2015 at 2:06 PM, Ethan Nelson <emann15 at hotmail.com> wrote:

>  Hi Bryce,
> Could you elaborate a bit more on the data collection process? How is the
> location data retrieved...GPS only or cell network-based tracking as well?
> Is the uncertainty/error in the measurement included? Also, is the data
> manually QCed before it is placed in their database?
>
> Some points came (I'm told) from a description by the owner of the station
(e.g. "I placed it in front of the library").
The majority of the locations were collected via an unusual method.  The
user scans a QR code at the station,
for "bike repair instructions".  The user is asked to "share their
location".   That point cloud becomes the mapped location.

The locations I field checked were all findable, but had positioning errors
consistent with crappy smartphone GPS units,
up to 30 meters.  No hdop or any other error margin is available.

---------

The script produces a changeset loaded into JOSM, then run through the TODO
plugin.
Armchair QC is limited however, as even really good air photos won't show
tall and skinny
features like this, even in shadow.

----
On the good side, every station I looked for I found, even if not quite at
the mapped location:
http://www.dero.com/fixitmap/fixitmap.html
How close are the ones near you?
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