Changeset: 139386034
Use NGS mark to correct imagery offset, realign most of San Jose train station
Closed by Moonfire
Tags
created_by | JOSM/1.5 (18721 en) |
---|---|
source | Bing |
Discussion
-
Comment from xephos1one
Hi,
what is the NGS mark you used to "correct" the offset in this changeset and in 139430609?
Your changes made the Station and tracks offset to any available imagery and what's much worse offset to the map data around it.
Your edits also created a hard and sometimes spiky transition to the tracks you didn't touch.
As this and the other changeset made the station offset to every map data around it I'd recommend to revert those changes. -
Comment from Moonfire
That was probably the one near Mission College, PID AA1873, though I have since also looked at the slightly closer AA1872 near VTA's Downtown Yard. My apologies for the messy boundary in that edit. I usually make the transition on such edits smoother so that they are less jarring.
Regarding the imagery offset references I use, I am currently reviewing the use of NOAA NGS data as presented in their data sheets and how it relates to evolving standards before I continue with this project or make any reversion decisions.
Thank you for your feedback and patience. -
Comment from Moonfire
I'd like to thank you again for drawing my attention to this oversight. Further research showed I was incorrectly using NAD data which, while very high precision, needs conversion to WGS in order to be useful to this project. I will not be reverting these change sets due to the number of changes made to objects to reflect recent construction and added details. Instead, I will be reviewing the areas I worked in previously to correct the NGS mark positions, update the offset database geometry I've uploaded to reflect their actual position (a very small correction from the imagery as presented), and recorrect the positions of objects. When the work is done, their positions will be as precise as I can make them and we will hopefully not have any more obvious mistakes at the edges of the edited areas.
Ways (1-20 of 22)
- 1
- 2
- Peninsula Subdivision (28431977), v28
- Peninsula Subdivision (28431979), v17
- 30694916, v22
- 4;5 (42478842), v14
- 42479136, v15
- 42479138, v14
- 119514263, v13
- 213371654, v20
- 316899518, v15
- 316899521, v15
- Peninsula Subdivision (316902613), v16
- 316902614, v11
- Convention Center - Winchester (367142371), v8
- Vasona Industrial Lead (411534207), v10
- Laurel Grove Lane (521597402), v6
- Peninsula Subdivision (Diridon, Track 5) (655127944), v9
- 655127945, v7
- 655127946, v6
- Peninsula Subdivision (655127949), v8
- 690941647, v5
Welcome to OpenStreetMap!
OpenStreetMap is a map of the world, created by people like you and free to use under an open license.
Hosting is supported by Fastly, OSMF corporate members, and other partners.
https://openstreetmap.org/copyright | https://openstreetmap.org |
Copyright OpenStreetMap and contributors, under an open license |