[Talk-us] finding city boundary info?

[Mike Thompson]

JOSM
<Download Button>
"Areas around Places" Tab
"Blythe, CA"
Select "boundary"
"Download"
Select any part of the boundary on the map (in this case it is a relation
with only one member)
In the "tags" dialog on the right of the JOSM screen it will list the way
as a member of the relation, click the relation and it will be selected.



On Sun, Nov 8, 2020 at 4:47 PM Ray Kiddy <ray at ganymede.org> wrote:

> Hello -
>
> Can anyone explain the best way for me to do something here? I am trying
> to identify the city boundaries of a city in California. Right now, there
> is a relation for the city of Blythe which covers a very small area to the
> west of the city. And then there is a node in the center of the city. I how
> (mostly) how to use both JOSM (not as an expert) and iD. But there is
> obviously something here that I do not understand.
>
> Blythe is on the border of California and Arizona on the interstate
> between LA and Phoenix.
>
> I have downloaded the 2019 TIGER data for California (
> https://www2.census.gov/geo/tiger/TGRGDB19/tlgdb_2019_a_06_ca.gdb.zip).
>
> I can load the data in QGIS, select "Incorporated Places" and I see this:
>
> If not in email, see:
> https://opencalaccess.org/misc/Screen%20Shot%202020-11-08%20at%203.26.32%20PM.png
>
> There it is. Blythe, CA.
>
> Then I can zoom in and see a little bit of the edge on the southern city
> of the city.
>
>
> If not in email, see:
> https://opencalaccess.org/misc/Screen%20Shot%202020-11-08%20at%203.30.13%20PM.png
>
> So, we are looking at object # 383948. The north and east edges of this
> block makes up part of the city boundary.
>
> Now, how do I find out what the features on the north and east side of the
> block are called? How do I find this in the map using either JOSM or iD? I
> was hoping that I could search for the tiger object with this id but I
> cannot seem to. Is there are way to find it that I do not see?
>
> When the TIGER data was in the form of text files (about 10 years ago), a
> line in the TIGER data set would show its name. But it does not contain
> this information in the GDB files? Is there somewhere else one can get this?
>
> What am I missing here?
>
> If I can find the feature in JOSM, then I can add it to the relation.
> Shouldn't TIGER lines be somewhere in the map here, findable in JOSM? How
> can I search for them?
>
> Any suggestions would be appreciated.
>
> thanx - ray
>
>
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