[OSM-talk] [Talk-us] Redacting 75, 000 street names contributed by user chdr
james2432 at gmail.com
Sun Aug 27 16:29:36 UTC 2017
Indeed, with the geometry still remaining it will be easy to create a
maproulette task(s) to repair the damage
+1 for name tag redaction
On Aug 27, 2017 12:26 PM, "Ian Dees" <ian.dees at gmail.com> wrote:
> Thanks for notifying us about this. I hope that you treat this as an
> import or automated edit and follow the rules you would expect to see the
> rest of the community follow. Please post samples of your changes, make a
> wiki page for posterity, and thanks for working to get buy-in from local
> Is your plan to revert changes to the name tag made by chdr or will you be
> completely removing the name tag? Personally, I would prefer to see the
> name tag completely removed so we can more easily come back and correct it.
> It might also be better to load this list you posted into maproulette or
> similar so we can systematically validate the name values on the ways.
> On Sun, Aug 27, 2017 at 8:49 AM, Frederik Ramm <frederik at remote.org>
>> in 2010 I was privately contacted by another OSM user with the
>> suspicion that user "chdr" might be copying names from Google maps
>> (there were few "easter eggs" in Oman that were only on Google and not
>> in the real world, and they suddenly popped up on OSM). "chdr" was
>> contacted at the time, but continued unfazed. In 2013 another mapper
>> lodged a complaint with DWG about edits by chdr, and I emailed chdr
>> asking him about his sources. At that point chdr stopped mapping. He
>> never replied about his sources though, even when I set an ultimatum (of
>> 31st August 2013) threatening to remove all names he contributed if he
>> can't tell us his source. We do have to assume that all names
>> contributed by chdr are copyright violations.
>> (chdr has added names all around the world, making a harmless survey
>> For various reasons I neglected to act on this, and was only reminded
>> now, 5 years later, when DWG received a complaint from a user in Brazil
>> where chdr has even used "source=google" occasionally. (But as I said,
>> the suspicion is that Google was used throughout.)
>> I have now compiled a list of all street names that were contributed by
>> chdr and are still visible today; we're talking about almost 75,000
>> street names world wide. The most affected countries are:
>> 18023 "United States of America"
>> 16345 "Mexico"
>> 15109 "Brazil"
>> 6791 "RSA"
>> 2802 "Spain"
>> 2614 "Australia"
>> 1923 "Argentina"
>> 1673 "Nigeria"
>> 1569 "India"
>> 1441 "Canada"
>> 954 "Malaysia"
>> 744 "Botswana"
>> 717 "Philippines"
>> 619 "Indonesia"
>> 553 "Italy"
>> 414 "Turkey"
>> 290 "Hungary"
>> 284 "Chile"
>> 250 "Kenya"
>> 127 "Saudi Arabia"
>> 107 "Paraguay"
>> 106 "Panama"
>> 100 "Morocco"
>> I've left out those countries with less than 100 affected ways.
>> For the US, I can break it down by state:
>> 5696 "Arizona"
>> 5116 "Texas"
>> 2294 "New York"
>> 1164 "District of Columbia"
>> 740 "Iowa"
>> 494 "Colorado"
>> 416 "New Jersey"
>> 339 "Illinois"
>> 268 "Michigan"
>> 239 "Pennsylvania"
>> 181 "Missouri"
>> 147 "Georgia"
>> 129 "New Mexico"
>> 123 "North Carolina"
>> 115 "California"
>> 106 "Virginia"
>> The breakdown for Mexico:
>> 7749 "Baja California"
>> 2084 "Puebla"
>> 1964 "Chihuahua"
>> 1539 "Coahuila"
>> 1161 "Mexico"
>> 1040 "Chiapas"
>> 342 "Tamaulipas"
>> 241 "Sonora"
>> 185 "San Luis Potosi"
>> 129 "New Mexico"
>> and Brazil:
>> 10904 "São Paulo"
>> 2605 "Paraná"
>> 945 "Rio de Janeiro"
>> 270 "Rio Grande do Sul"
>> 154 "Goiás"
>> and South Africa:
>> 4422 "Gauteng"
>> 750 "KwaZulu-Natal"
>> 600 "Eastern Cape"
>> 439 "Western Cape"
>> 400 "Northern Cape"
>> 179 "Mpumalanga"
>> - each time leaving out a couple others under 100.
>> We believe that only names, not geometries have been taken from other
>> maps so we'll remove and redact the names only. In identifying "names
>> contributed by chdr" I took care to really only pick up the names that
>> were introduced by them, not names that were there before, and also when
>> chdr split a way that had a name I will make sure that the newly created
>> way doesn't count as "named by chdr". Additionally, I have ignored those
>> cases where chdr simply performed a TIGER expansion (St->Street etc) of
>> a name that was there before.
>> My process has two weak points (that I am aware of):
>> 1. It doesn't properly "follow" a chrdr-contributed name through way
>> splits performed by other users; if someone has split a way created by
>> chdr, then the name will remain on the bit that was created by this
>> user. This is somewhat unsatisfying but after having manually checked a
>> random sample I think the problem is small enough to be ignored.
>> 2. It is possible that, like with a recent case in Switzerland where I
>> had to do a similar redaction, some of these chdr-contributed names will
>> have been confirmed by others in a survey, i.e. someone else surveyed
>> the area and checked the name, but saw no need to change it in any way
>> since it was already correct. Sadly my process will now remove the name
>> even though, had the name not been there in the first place, that person
>> could have added the name. This is not nice but I don't see how it could
>> be avoided.
>> Here's a list of way IDs affected, with country and state:
>> I am trying to keep the damage to OSM to a minimum while at the same
>> time respecting copyright. If anyone wants to spot check a few names in
>> their area and can suggest a refinement of the process that would leave
>> more names in place because there's reason to assume they are legit, I'm
>> all ears.
>> It has been suggested to me that even if names in the US were taken
>> from Google, Google would in turn have had them from TIGER and hence we
>> could simply leave them be. I am not convinced of this reasoning but
>> willing to hear that case argued.
>> It is sad that chdr isn't available for comment but I must take their
>> silence as an admission of wrongdoing. I will fire off another message
>> to them pointing to this thread.
>> Frederik Ramm ## eMail frederik at remote.org ## N49°00'09" E008°23'33"
>> Talk-us mailing list
>> Talk-us at openstreetmap.org
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