Re: [Talk-us] [Tagging] Smooth shoulder intended for cycling

2012-04-17 Thread Nathan Edgars II
Hmmm. Apparently Thunderbird's 'reply to list' fails when there are 
multiple lists. Sending again:


On 4/17/2012 11:47 PM, Steve Bennett wrote:

I quite like "cycleway=shoulder". It describes exactly what's going
on: the cycling infrastructure at this point isn't a marked lane
(cycleway=lane), nor a segregated lane (cycleway=track), it's a sealed
road shoulder.

Could you elaborate on your objections?


It implies that the shoulder is an official cycleway, when in reality it 
may be full of debris (or worse: 
http://flbikelaw.org/2012/03/paved-shoulder/ ). Would you use a cycleway 
tag on any sidewalk that one can ride on (here that would be any outside 
city limits), or just those that have been specially designated as such?


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Re: [Talk-us] [Tagging] Smooth shoulder intended for cycling

2012-04-17 Thread Nathan Edgars II

On 4/17/2012 11:47 PM, Steve Bennett wrote:

I quite like "cycleway=shoulder". It describes exactly what's going
on: the cycling infrastructure at this point isn't a marked lane
(cycleway=lane), nor a segregated lane (cycleway=track), it's a sealed
road shoulder.

Could you elaborate on your objections?


It implies that the shoulder is an official cycleway, when in reality it 
may be full of debris (or worse: 
http://flbikelaw.org/2012/03/paved-shoulder/ ). Would you use a cycleway 
tag on any sidewalk that one can ride on (here that would be any outside 
city limits), or just those that have been specially designated as such?


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Re: [Talk-us] [Tagging] Smooth shoulder intended for cycling

2012-04-17 Thread Steve Bennett
On Wed, Apr 18, 2012 at 11:15 AM, Nathan Edgars II  wrote:
> One regional mapper uses cycleway=shoulder for this, but I see that as
> sub-optimal, since it's primarily a shoulder, not a cycleway. It would be
> like putting cycleway=sidewalk whenever there's a smooth paved sidewalk.

I quite like "cycleway=shoulder". It describes exactly what's going
on: the cycling infrastructure at this point isn't a marked lane
(cycleway=lane), nor a segregated lane (cycleway=track), it's a sealed
road shoulder.

Could you elaborate on your objections?

The real complication arises when there are shoulders of varying
quality that are assessed (by cyclists) as being more or less suitable
for cycling - leading to issues of subjectivity. At least the
situation you describe appears objective: the surface was intended for
cycling on.

Steve

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Re: [Talk-us] Smooth shoulder intended for cycling

2012-04-17 Thread Nathan Edgars II

On 4/17/2012 9:43 PM, Kristian M Zoerhoff wrote:

Alternatively, maybe cycleway needs an "unmarked lane" setting for these
situations, though that would imply the local authorities are intending for
cyclists to use the shoulder, rather than just tolerating their presence
(the usual situation).


I use cycleway=unmarked_lane for FDOT's "undesignated bike lane", which 
has a white line on the right side but no bike markings.


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Re: [Talk-us] tiff, dwg and nad83

2012-04-17 Thread Nathan Edgars II

On 4/17/2012 9:23 PM, Serge Wroclawski wrote:

On Tue, Apr 17, 2012 at 8:52 PM, Nathan Edgars II  wrote:


When I joined OSM I went through photos and notes I had taken since the late
1990s. There's no guarantee of timeliness here either. Certainly not as much
as an import of city boundary data that has each annexation marked through
the current year.


Don't worry, I wasn't counting you NE2- according to your own profile,
you use a made up name, and according to your editing patterns, you're
a bot, so you're more of an import than a user.


Ah, the old ad hominem. When you can't reply, be a dick.

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Re: [Talk-us] Smooth shoulder intended for cycling

2012-04-17 Thread Kristian M Zoerhoff
On Tue, Apr 17, 2012 at 09:15:49PM -0400, Nathan Edgars II wrote:
> I'm wondering what the best way would be to tag a good-quality
> shoulder that acts essentially as an undesignated bike lane, in that
> you can use it but it is not required. Current Florida DOT policy is
> to use these on rural roads, with marked bike lanes only when there
> is a lane to the right. For example here: 
> http://maps.google.com/maps?hl=en&ll=30.605358,-86.950672&spn=0.008255,0.016512&gl=us&t=m&z=17&layer=c&cbll=30.605241,-86.950558&panoid=X4-X3CdhvVO_ptMWbvB8SA&cbp=12,330.83,,0,9.24
> One can choose to ride either in the right lane or on the shoulder
> beyond the intersection.
> 
> One regional mapper uses cycleway=shoulder for this, but I see that
> as sub-optimal, since it's primarily a shoulder, not a cycleway. It
> would be like putting cycleway=sidewalk whenever there's a smooth
> paved sidewalk.
> 
> On the other hand, shoulder=yes or shoulder=paved says nothing about
> the quality of the shoulder. Should there be a minimum width for a
> shoulder (FDOT's standard is 4 feet)?

cycleway=shoulder doesn't seem right to me, either, and I'm a fairly 
frequent cyclist (or was, before kids). 

*If* we are going to mark shoulders, I think we need a series of tags, such 
as:

shoulder:surface=paved/unpaved
shoulder:width=4 ft
shoulder:rumble_strips:yes/no/aashto (this is very important for
  cyclists, as continuous
  strips render the shoulder
  useless for cycling, and yes,
  there is an AASHTO standard)

Has anyone run this by the OpenCycleMap folks? They're the only likely data 
consumer for this information at present.

Alternatively, maybe cycleway needs an "unmarked lane" setting for these 
situations, though that would imply the local authorities are intending for 
cyclists to use the shoulder, rather than just tolerating their presence 
(the usual situation).

-- 

Kristian M Zoerhoff


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Re: [Talk-us] tiff, dwg and nad83

2012-04-17 Thread Serge Wroclawski
On Tue, Apr 17, 2012 at 8:52 PM, Nathan Edgars II  wrote:

> When I joined OSM I went through photos and notes I had taken since the late
> 1990s. There's no guarantee of timeliness here either. Certainly not as much
> as an import of city boundary data that has each annexation marked through
> the current year.

Don't worry, I wasn't counting you NE2- according to your own profile,
you use a made up name, and according to your editing patterns, you're
a bot, so you're more of an import than a user.

- Serge

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[Talk-us] Smooth shoulder intended for cycling

2012-04-17 Thread Nathan Edgars II
I'm wondering what the best way would be to tag a good-quality shoulder 
that acts essentially as an undesignated bike lane, in that you can use 
it but it is not required. Current Florida DOT policy is to use these on 
rural roads, with marked bike lanes only when there is a lane to the 
right. For example here: 
http://maps.google.com/maps?hl=en&ll=30.605358,-86.950672&spn=0.008255,0.016512&gl=us&t=m&z=17&layer=c&cbll=30.605241,-86.950558&panoid=X4-X3CdhvVO_ptMWbvB8SA&cbp=12,330.83,,0,9.24
One can choose to ride either in the right lane or on the shoulder 
beyond the intersection.


One regional mapper uses cycleway=shoulder for this, but I see that as 
sub-optimal, since it's primarily a shoulder, not a cycleway. It would 
be like putting cycleway=sidewalk whenever there's a smooth paved sidewalk.


On the other hand, shoulder=yes or shoulder=paved says nothing about the 
quality of the shoulder. Should there be a minimum width for a shoulder 
(FDOT's standard is 4 feet)?


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Re: [Talk-us] tiff, dwg and nad83

2012-04-17 Thread Nathan Edgars II

On 4/17/2012 8:18 PM, Serge Wroclawski wrote:

If a user manually surveys data, there is an assumption of timeliness
and accuracy of that survey. That's not the case with imported data,
despite oftentimes being stamped "official".


When I joined OSM I went through photos and notes I had taken since the 
late 1990s. There's no guarantee of timeliness here either. Certainly 
not as much as an import of city boundary data that has each annexation 
marked through the current year.


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Re: [Talk-us] tiff, dwg and nad83

2012-04-17 Thread Serge Wroclawski
On Tue, Apr 17, 2012 at 7:51 PM, Dale Puch  wrote:

>> I think this point is controversial, so let's stick with some points
>> that aren't:
>>
>> 1. In our history of imports, a very small percentage have been good.
>
> Compare a users early imports to their early mapping

They aren't nearly comparable in my experience. In all my mapping, I
see tons of bad imported data, but I see very few errors due to newbie
mappers. Sometimes I'll find a mistagged feature, or an unclosed way,
but overall I find users to be fairly careful, and when they're not,
the mistakes they make are small and confined.

Imports, on the other hand, are widespread, pervasive and are often
hard to detect. I see features which are hard to verify without
surveying, and I find odd OSM features, like ways that share the same
geometry (even the same nodes), or duplicated features close to each
other, but from different sources.

Your argument that the problems are similar don't bear out in my
experience mapping with OSM, the problems are neither similar in type
nor scale.

Nonetheless I've personally taken steps to address both. For new
mappers I am very involved in helping the community. I've run mapping
parties, I've made a video tutorial series, I'm active on the newbies
list and (less) active on help.osm.org, and can often be found helping
users on our IRC channel.

Importers, sadly, rarely ask as many questions as new mappers.

>> 2. We have no current technology to keep an import synced with another
>> data source, so the data goes stale quickly.
>
> Also true for manual edits.  Why is this considered just an import issue?

For imports, this is often touted as a benefit- that's why the lack of
an actual implementation is important to point out.

>> 3. Many imports are of datasets we don't want in OSM and we have
>> little/no mechanism outside community vetting to discover that until
>> it's too late.
>
> Any user can decide that they want to include "X" into the dataset imported
> or manually mapped.

If a user manually surveys data, there is an assumption of timeliness
and accuracy of that survey. That's not the case with imported data,
despite oftentimes being stamped "official".

>> 4. Most imports are bad, and most imports are left in OSM, which means
>> we have tons of garbage in OSM. Garbage in OSM makes the map harder to
>> work with for mappers, for tool-makers and for users.
>
> see all above

I've spent certainly well over a hundred hours cleaning up imported
data in OSM. I've never spent close to that dealing with new user
problems.

- Serge

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Re: [Talk-us] tiff, dwg and nad83

2012-04-17 Thread Dale Puch
Regarding Frederik's 4 points, plus the element duplication issue as
reasons imports are bad:

ALL are potentially true for any mapper especially new ones.  It is just
that a bad import can generate a lot more good/bad data at once.  So yes,
imports need more effort to insure good quality.
Regarding dupe items, this is both import related and upload related.  The
import side is obvious, but failed uploads of any source have generated
lots of duplicates as well.  This is admittedly more prone with imported
data, I would guess fewer users doing manual edits tried to make large
uploads.
See the notes below for the rest.

On Mon, Apr 16, 2012 at 8:30 PM, Serge Wroclawski  wrote:

>
> On Mon, Apr 16, 2012 at 6:46 PM, Frederik Ramm 
> wrote:
>
>
> I think this point is controversial, so let's stick with some points
> that aren't:
>
> 1. In our history of imports, a very small percentage have been good.
>
Compare a users early imports to their early mapping


> 2. We have no current technology to keep an import synced with another
> data source, so the data goes stale quickly.
>
Also true for manual edits.  Why is this considered just an import issue?


> 3. Many imports are of datasets we don't want in OSM and we have
> little/no mechanism outside community vetting to discover that until
> it's too late.
>
Any user can decide that they want to include "X" into the dataset imported
or manually mapped.

4. Most imports are bad, and most imports are left in OSM, which means
> we have tons of garbage in OSM. Garbage in OSM makes the map harder to
> work with for mappers, for tool-makers and for users.
>
see all above

>
> - Serge
>
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-- 
Dale Puch
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Re: [Talk-us] Excellent progress, u.s.

2012-04-17 Thread stevea
Sure, Alan.  I'll try to help by explaining a core of my process, 
and you and others can take it from there.


Great job - thanks for this. I'm sure it helps.


Appreciate the kudos.  We might all share like this when asked.  This 
is called a "workflow" and workflows with specific numbered steps are 
valuable/crucial nuggets of knowledge when somebody needs one to 
solve a specific problem AND a workflow HAS BEEN SHARED.  So, ask, 
and, if you KNOW, share WHEN asked!




7)  For ways (I'm not going to explain points), here is what I do:

...
So, we're basically duplicating the existing way and then "blessing" 
it. Is this really sufficient - to verify the "tainted" geometry 
instead of re-drawing it? If so, why is it not sufficient that, in 
many, many cases, the original creator of the way has not accepted 
CT, but many other accepting mappers have afterwards aligned (i.e. 
moved nodes) and tagged (in my case, with sources of sat imagery, 
local photo survey, county records, and/or even GPS survey) it? 
Haven't I already "blessed" it? Can't the redaction bot look at the 
source tag and see this?


Another point, at least in SoCal, is that many of our "tainted" ways 
are created by "blars", who has not accepted the CT. However, these 
are TIGER-imported ways. They carry the TIGER tags. I'm sure they 
could be verified as having come from the TIGER import. They were 
no-doubt the result of having split an existing TIGER way. In this 
case, why is it not sufficient to see the TIGER tags on the way to 
consider it "blessed" along with all the other TIGER ways? 
Especially when tagged afterwards by accepting mappers with sources 
as above?


8)   Repeat step 7 for all bad ways (or points) in the list of 
"data loss" that License Problems displays.


I'd like to suggest step 8.5: Run the OSM validator. It will find 
all the intersections that were missed, and probably a bunch of 
other problems that may or may not have pre-existed.



9)  Upload your re-mapping efforts.


I agree that a step 8.5 to run JOSM Validator is well-indicated here. 
Thank you for that excellent suggestion.


So, can someone from the redaction squad comment on the logic being 
used and the questions above?


I don't know that they reply to this list.  I believe they read it, 
but I have no proof of that.


Finally, it is true that my suggested workflow "duplicates an 
existing (tainted) way and then blesses it."  Yes.  The additional 
step of visually verifying with Bing Sat allows this to crystallize 
into a "solidly legal" footing:  "I can see it in Bing, therefore the 
duplication of something which was unlicensable is now licensable." 
In other words, "re-drawing" is not necessary (it is sufficient), but 
it is overkill (unless points are also tainted).  Duplication + 
visual inspection via Bing seems sufficient to me, but it would be 
really, really good to get the redaction squad to directly address 
that point.  Right here (talk-us) would be just fine.  OSM's wiki 
would, too.


SteveA
California

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Re: [Talk-us] tiff, dwg and nad83

2012-04-17 Thread Nathan Edgars II

On 4/17/2012 4:26 AM, Frederik Ramm wrote:

And now assume there's a third city
of equal size where *nothing* has been mapped at all... maybe I
shouldn't speak for everyone but for me (and virtually every mapper I
know) surely the city with data-but-no-mappers would be least appealing,
far below that with no data.


You definitely shouldn't speak for other people. I would much prefer 
imported street data to nothing at all, and James indicated that he 
would too.


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Re: [Talk-us] Excellent progress, u.s.

2012-04-17 Thread Toby Murray
On Tue, Apr 17, 2012 at 2:22 AM, Alan Mintz
 wrote:
> At 2012-04-16 20:41, Toby Murray wrote:
>>
>> On Mon, Apr 16, 2012 at 8:37 PM, Nathan Edgars II 
>> wrote:
>> > On 4/16/2012 9:18 PM, Alan Mintz wrote:
>> >> At 2012-04-16 14:06, Nathan Edgars II wrote:
>> >>> Or you can simply add odbl=clean if there's nothing ungood about the
>> >>> object (e.g. it was split from a TIGER way and the splitting is
>> >>> something you would have done anyway).
>> >> Is this really sufficient? Can someone from the redaction squad
>> >> comment?
>> >> Can I protect/"bless" a way or node and prevent its redaction simply by
>> >> (in good faith) adding this tag?
>> > We have no idea what rules the OSMF will use.
>>
>> Well I won't claim that communication has been great but this
>> statement is a little over dramatic.
>>
>> First of all: odbl=clean *will* be honored.
>> ...
>
>
> On nodes as well as ways? As I wrote earlier, if I have tagged a way with a
> source that includes imagery, and removed the tiger:reviewed=no tag, it
> means I have aligned it to that imagery, including leaving nodes that are in
> the correct place alone (sometimes). Can I bless the nodes in the same way?

Yes. odbl=clean immediately removes any object from further processing
by the bot. See comments on the first function:
https://github.com/zerebubuth/openstreetmap-license-change/blob/master/tags.rb

>> Also there is this:
>> http://wiki.openstreetmap.org/wiki/Open_Data_License/What_is_clean%3F
>
>
> A nice empty page. Tough to argue with :)

Works for me. You can search for "what is clean?" and it should be the
first result.


>> And of course the code is available for anyone to view... although I'm
>> not going to claim that this is really good documentation on the
>> matter:
>> https://github.com/zerebubuth/openstreetmap-license-change
>
> Nor can you reasonably expect people to use this as a guideline. And I'm a
> programmer.

Agreed


>> There has been talk of the "v0 rule" which I believe is being
>> implemented in the code. This means that the act of creating an object
>> by a decliner doesn't automatically make it dirty. So if a way was
>> created by a decliner with the tag name=Fred and then someone else
>> added the tag highway=footway then after the bot gets done with it,
>> the way will still exist but only have the highway=footway tag. If an
>> accepting user changes the value of the name=* tag then it will be
>> clean... except, see the next paragraph. However if all of the way's
>> nodes are dirty and get removed then the way itself will have to go
>> too since you can't have a zero-node way.
>
>
> I contend, though, that you should not have to change a node to make it
> clean. If one has tagged a source with an imagery (or GPS) value, they are
> saying that they vouch for the position of the way, including its nodes.
> Same applies to removing tiger:reviewed=no (or gnis:reviewed=no). The user
> is specifically claiming to have reviewed the position and tagging and
> approved it. Should that not be sufficient?

I don't disagree with your points although things get complicated in
practice. I've seen people mass removing tiger:reviewed tags on any
way that they happened to load into JOSM while mapping when they
obviously didn't even look at it. Also, what if a user only
reviewed/improved the geometry of a dirty way in one spot but the way
is several miles long? This may not be the case for things you have
touched but there are a lot of people who have done a lot of edits
that are less rigorous.


>> Unfortunately neither badmap nor OSMI fully implement all of these
>> rules so yes there is still far too much uncertainty. But there are
>> some facts to be had.
>
> Why, then, is it acceptable for us to be sitting here with a dagger hanging
> over our heads, uncertain as to when and how it will fall? Shouldn't all of
> this be nailed down, followed by a reasonable notice period? Why is there a
> deadline other than "we need to get it done for the long-term benefit of
> OSM?"

Won't disagree with this either. Ideally the bot code would have been
developed over the past year instead of the past month and then been
available to make tools like OSMI and badmap that use the actual code
to show what will happen. But that's now how things happened. I'm not
trying to lay blame. I've been mostly a spectator to the process
myself so I'm certainly not going to throw stones.

Toby

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Re: [Talk-us] tiff, dwg and nad83

2012-04-17 Thread Frederik Ramm

Hi,

On 04/17/12 01:05, James Umbanhowar wrote:

Being a reformed importer, I generally agree with the don't import rule.
However, I have often heard this nugget and in my experience it is based on
either anecdote or one set of simulations that assumed that individuals stop
joining because they view the map as complete.

Is there any good evidence that this is the case?


We haven't done a questionnaire for turned-off-mappers really, and I 
wouldn't know how to even reach out to those who have looked at OSM and 
decided not to contribute.


But personally, I think it's a total no-brainer. Take two equally sized 
cities which are mapped to an acceptable but not great standard. Assume 
that in one city there's a group of 20 active mappers who have, in 
between them, mapped that city, are busy improving it, and where a few 
of those meet one a month in a pub. Assume that in the other city there 
are no mappers, and the data is only there because someone from 500 
miles away has imported government data.


In both cities, some data will be missing, some wrong, some stale. So. 
Which city would you prefer to be a mapper in - and which city would 
rather have you despair and give up? And now assume there's a third city 
of equal size where *nothing* has been mapped at all... maybe I 
shouldn't speak for everyone but for me (and virtually every mapper I 
know) surely the city with data-but-no-mappers would be least appealing, 
far below that with no data.


Imports may work if there is a community already large enough to 
assimilate the imported data, to make it their own. But data imported to 
places where there is no community, or the community that is there is 
totally overwhelmed by the data, that's not OpenStreetMap. That's some 
other project. OpenImportMap, or EditYourGovernmentData or so.


Bye
Frederik

--
Frederik Ramm  ##  eMail frede...@remote.org  ##  N49°00'09" E008°23'33"

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Re: [Talk-us] tiff, dwg and nad83

2012-04-17 Thread Werner Poppele

Nathan Edgars II wrote:

On 4/17/2012 3:29 AM, Werner Poppele wrote:

I totally agree with Frederik. Yes - imported data turns down new
mappers. Have you ever seen those monster
multipolygons ? I am sure a new mapper says: Forget that
I personally tend to stop my contribution to OSM because of the very bad
stuff I see when mapping:
Triple contours at the same position, double / triple nodes,
unconnected, tiny streams / rivers with a bunch tags.


You seem to be arguing against *bad* imports, not imports in general.

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Dear Nathan,
thats right. I am not totally against any import, but we need a way to 
prevent *bad imports* with huge consequences for all of us.
Nobody is able to fix the most data which were imported during the last 
years. You, by the way, do a very good job. Thank you very much for any 
of your contributions. But what about others ? Mapping for example all 
highways with all related stuff by hand is probably impossible ! The 
question is not importing data yes or no, the question is in my oppinion 
how can we cope with the consequences of *bad imports*. We should have a 
way to make imports as easyly as possible to help new mappers 
contributing to OSM but we need also a way to keep the database clean.


WernerP



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Re: [Talk-us] tiff, dwg and nad83

2012-04-17 Thread Nathan Edgars II

On 4/17/2012 3:29 AM, Werner Poppele wrote:

I totally agree with Frederik. Yes - imported data turns down new
mappers. Have you ever seen those monster
multipolygons ? I am sure a new mapper says: Forget that
I personally tend to stop my contribution to OSM because of the very bad
stuff I see when mapping:
Triple contours at the same position, double / triple nodes,
unconnected, tiny streams / rivers with a bunch tags.


You seem to be arguing against *bad* imports, not imports in general.

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Re: [Talk-us] tiff, dwg and nad83

2012-04-17 Thread Werner Poppele

Gregory Arenius wrote:

Hi,

"Imported data turns down potential new mappers."

I really disagree with this statement.  I think the mappers would be 
turned off if we didn't import it when available.  "So you have all 
250,000 address points for the city but instead of using them you'd 
rather us go collect all of them a second time?!?"  Nobody is going to 
do that.  Same with building outlines.  It might be true for some data 
but I think its a largely inaccurate statement.


There have also been some really well done imports such as the MassGIS 
one in MA.  Not using that data isn't going to get us any further than 
using it.  It makes our data much more useful, so it gets used, which 
brings in more contributors which


Maybe it would be different if there were no open data to import at 
all, then people would be more motivated to gather it so it would 
exist.  However, if it does exist, weather or not we use it, that 
motivation is no longer there.


I also think that in the US if government agencies are updating their 
data that we can use that we should look at that as part of the 
community.  They're producing free data and so are weI just wish 
they could use our data they way we use theirs.


-Greg



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Dear Gregory
I totally agree with Frederik. Yes - imported data turns down new 
mappers. Have you ever seen those monster

multipolygons ? I am sure a new mapper says: Forget that
I personally tend to stop my contribution to OSM because of the very bad 
stuff I see when mapping:
Triple contours at the same position, double / triple nodes, 
unconnected, tiny streams / rivers with a bunch tags.
In Albuquerque I - sorry - deleted 43 churches imported from geonames 
all at the same spot.
I have dozens of examples like that. Tell us, how to fix this stuff. By 
hand ? Waiting for better data ?

Writing better software ? Who merges old with new data ?
There is a philosophy of Importing and forgetting. For me most kind of 
imports are some kind of vandalism.


Here are some examples:

Double contours
http://www.openstreetmap.org/?lat=46.1499579&lon=-89.0375386&zoom=16
http://www.openstreetmap.org/?lat=46.127073&lon=-89.0544339&zoom=16
http://www.openstreetmap.org/?lat=46.12705&lon=-89.05509&zoom=16
http://www.openstreetmap.org/?lat=46.18554&lon=-86.03864&zoom=16

Multiple streams / rivers
http://www.openstreetmap.org/?lat=46.117362&lon=-88.9222917&zoom=16
http://www.openstreetmap.org/?lat=46.1631804&lon=-89.0104308&zoom=16

Nodes tagged waterway=river
http://www.openstreetmap.org/?lat=46.2965&lon=-86.1032&zoom=14

Unconnected streams / rivers
http://www.openstreetmap.org/?lat=46.723&lon=-88.568&zoom=14

Ten thousands of omported single trees in Europe
http://www.openstreetmap.org/?lat=41.98688&lon=2.81672&zoom=17&layers=M

WernerP

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Re: [Talk-us] Excellent progress, u.s.

2012-04-17 Thread Alan Mintz

At 2012-04-16 20:41, Toby Murray wrote:

On Mon, Apr 16, 2012 at 8:37 PM, Nathan Edgars II  wrote:
> On 4/16/2012 9:18 PM, Alan Mintz wrote:
>> At 2012-04-16 14:06, Nathan Edgars II wrote:
>>> Or you can simply add odbl=clean if there's nothing ungood about the
>>> object (e.g. it was split from a TIGER way and the splitting is
>>> something you would have done anyway).
>> Is this really sufficient? Can someone from the redaction squad comment?
>> Can I protect/"bless" a way or node and prevent its redaction simply by
>> (in good faith) adding this tag?
> We have no idea what rules the OSMF will use.

Well I won't claim that communication has been great but this
statement is a little over dramatic.

First of all: odbl=clean *will* be honored.
...


On nodes as well as ways? As I wrote earlier, if I have tagged a way with a 
source that includes imagery, and removed the tiger:reviewed=no tag, it 
means I have aligned it to that imagery, including leaving nodes that are 
in the correct place alone (sometimes). Can I bless the nodes in the same way?




Also there is this:
http://wiki.openstreetmap.org/wiki/Open_Data_License/What_is_clean%3F


A nice empty page. Tough to argue with :)



And of course the code is available for anyone to view... although I'm
not going to claim that this is really good documentation on the
matter:
https://github.com/zerebubuth/openstreetmap-license-change


Nor can you reasonably expect people to use this as a guideline. And I'm a 
programmer.




There has been talk of the "v0 rule" which I believe is being
implemented in the code. This means that the act of creating an object
by a decliner doesn't automatically make it dirty. So if a way was
created by a decliner with the tag name=Fred and then someone else
added the tag highway=footway then after the bot gets done with it,
the way will still exist but only have the highway=footway tag. If an
accepting user changes the value of the name=* tag then it will be
clean... except, see the next paragraph. However if all of the way's
nodes are dirty and get removed then the way itself will have to go
too since you can't have a zero-node way.


I contend, though, that you should not have to change a node to make it 
clean. If one has tagged a source with an imagery (or GPS) value, they are 
saying that they vouch for the position of the way, including its nodes. 
Same applies to removing tiger:reviewed=no (or gnis:reviewed=no). The user 
is specifically claiming to have reviewed the position and tagging and 
approved it. Should that not be sufficient?




Unfortunately neither badmap nor OSMI fully implement all of these
rules so yes there is still far too much uncertainty. But there are
some facts to be had.


Why, then, is it acceptable for us to be sitting here with a dagger hanging 
over our heads, uncertain as to when and how it will fall? Shouldn't all of 
this be nailed down, followed by a reasonable notice period? Why is there a 
deadline other than "we need to get it done for the long-term benefit of OSM?"


--
Alan Mintz 


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