Re: [Talk-us] Last word on named driveways

[Richard Welty]

On 4/22/17 4:18 AM, Paul Johnson wrote:
>
> Given the inconsistency of TIGER data, I would not be surprised if no
> automated effort will be ever attempted to deal with that dataset ever
> again.  That said, there are tilesets out there that show TIGER data
> that thas a newer name or geometry than what OSM has, though this
> itself has it's pitfalls as I've noticed a tendency for such datasets
> to false-positive on a name because OklaDOT renamed something and
> whatever Census-taker mapped it in TIGER kept the old name.
when assessing TIGER, it's good to keep in mind that it's a moving
target. the
copy that was imported into OSM was the 2007 version, which was midway
through
the improvement project, and the reason why some parts of TIGER are much
less
bad than other parts of TIGER in OSM.

there are various layers available which render newer TIGER so it can be
used as
a backdrop image for editing, i sometimes use these when cleaning up older,
obviously bad TIGER.  and TIGER really is improving. a major part of
that is that
the Census Bureau is trying to work with local GIS departments more and
reduce
their direct involvement in maintainence, which seems to me to be the
right way
to go.

richard

-- 
rwe...@averillpark.net
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Re: [Talk-us] Last word on named driveways

[Charlotte Wolter]

:-)


At 10:04 AM 4/22/2017, you wrote:
No offense intended!  I know the Census TIGER 
and OSM have similar but not entirely congruent goals.


On Apr 22, 2017 11:00, "Charlotte Wolter" 
<techl...@techlady.com> wrote:

Paul,

        Having been a Census-taker myself, I know the process.
Actually, it would be very unusual for an adress checker (done
one year before the Census itself) to change a street name. We
were given printouts that were our guide as we checked addresses.
If something didn't match, such as if a new apartment building
was constructured, we had to do a special form.
I never had a street-name change (Santa Monica is well-established),
but I imagine someone doing a suburban area might have some.
Now, supposedly we got our information from someone who actually
lives there. But, that means trusting that the person you are talking
to that day knows what they are talking about. So, there's lots of
room for error.
In 2010, we were instructed to add a GPS point near the front door
of each dwelling unit or apartment building. However, we were not
given guidance on how close to stand. I suspect that is one reason
why we have so many zig-zag streets. :-)

Charlotte


At 01:18 AM 4/22/2017, you wrote:


On Tue, Apr 18, 2017 at 1:59 PM, Charlotte 
Wolter <techl...@techlady.com> wrote:
        After my inquiries about 
the rash of named driveways in Campbell County, 
Virginia--these are driveways that end of with 
the name of the street they intersect--I 
finally got  a reply from the county GIs 
director (pasted in below). He says 
inequivocally that it is a TIGER issue, not a 
local one. Probably no surprise. I know opinions vary on TIGER.



That's not a giant surprise.  And it's not 
so much that opinions on TIGER vary so much as 
the quality of TIGER itself is highly 
variable.  I've seen places where TIGER was 
amazing and there wasn't much to do other than 
add speed limits and turn lanes.  But 
Portland, Oregon comes to mind as an area where 
it was pretty obvious that they digitized 
someone's hand-drawn map, which was drawn on a 
napkin with a fine-tip ballpoint pen in the 
rain, and was like trying to get a cat to 
cooperate with being rubbed backwards to sanitize.

Â
        He also add a couple of 
data souces, his own county and the state of Virginia, that could be useful.
        I sent this to TIGER and 
asked that they update us on any fixes for this.


Â
Given the inconsistency of TIGER data, I would not be surprised
if no automated effort will be ever attempted to deal with that dataset
ever again.
That said, there are tilesets out there that show TIGER data that thas
a newer name or geometry than what OSM has, though this itself has its
pitfalls. I've noticed a tendency for such datasets to false-positive
on a name because OklaDOT renamed something and whatever Census-
taker mapped it in TIGER kept the old name.
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Â


Charlotte Wolter
927 18th Street Suite A
Santa Monica, California
90403
+1-310-597-4040
techl...@techlady.com
Skype: thetechlady


Charlotte Wolter
927 18th Street Suite A
Santa Monica, California
90403
+1-310-597-4040
techl...@techlady.com
Skype: thetechlady

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Re: [Talk-us] Last word on named driveways

[Paul Johnson]

On Tue, Apr 18, 2017 at 1:59 PM, Charlotte Wolter 
wrote:

> After my inquiries about the rash of named driveways in Campbell
> County, Virginia--these are driveways that end of with the name of the
> street they intersect--I finally got  a reply from the county GIs director
> (pasted in below). He says inequivocally that it is a TIGER issue, not a
> local one. Probably no surprise. I know opinions vary on TIGER.
>

That's not a giant surprise.  And it's not so much that opinions on TIGER
vary so much as the quality of TIGER itself is highly variable.  I've seen
places where TIGER was amazing and there wasn't much to do other than add
speed limits and turn lanes.  But Portland, Oregon comes to mind as an area
where it was pretty obvious that they digitized someone's hand-drawn map,
which was drawn on a napkin with a fine-tip ballpoint pen in the rain, and
was like trying to get a cat to cooperate with being rubbed backwards to
sanitize.


> He also add a couple of data souces, his own county and the state
> of Virginia, that could be useful.
> I sent this to TIGER and asked that they update us on any fixes
> for this.
>

Given the inconsistency of TIGER data, I would not be surprised if no
automated effort will be ever attempted to deal with that dataset ever
again.  That said, there are tilesets out there that show TIGER data that
thas a newer name or geometry than what OSM has, though this itself has
it's pitfalls as I've noticed a tendency for such datasets to
false-positive on a name because OklaDOT renamed something and whatever
Census-taker mapped it in TIGER kept the old name.
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[Talk-us] Last word on named driveways

[Charlotte Wolter]

Hello all,

After my inquiries about the rash of named driveways in 
Campbell County, Virginia--these are driveways that end of with the 
name of the street they intersect--I finally got  a reply from the 
county GIs director (pasted in below). He says inequivocally that it 
is a TIGER issue, not a local one. Probably no surprise. I know 
opinions vary on TIGER.
He also add a couple of data souces, his own county and the 
state of Virginia, that could be useful.
I sent this to TIGER and asked that they update us on any 
fixes for this.

Charlotte

Hello,
From your description, it sounds like you are looking at Census, TIGER
data.  Census adds these names to driveways, using the same name as the
road they come off of.  This is something Census does for their use.
Campbell County does NOT duplicate road names.

Virginia has a statewide road database in which localities provide data
updates.  Campbell County participates in this process.  Statewide
street data can be viewed and/or downloaded from:
http://vgin.maps.arcgis.com/home/item.html?id=741d0fb937ee420680eb500250acc4ef

Additionally, County data can be viewed from our County Website at:
http://gis.worldviewsolutions.com/campbell/account/logon

Dale Woods
GIS Program Manager
Campbell County, VA




Charlotte Wolter
927 18th Street Suite A
Santa Monica, California
90403
+1-310-597-4040
techl...@techlady.com
Skype: thetechlady



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