[OSM-talk] is OSM a fake map.

[Oleksiy Muzalyev]

Still the current map is much better that say the map from the year of 
1538: 
https://olinuris.library.cornell.edu/sites/default/files/user7/Waldseemuller_1507.jpg

On that old map the continents' shapes are incorrect, half of the North 
America is absent. However, such a map is still better than nothing. 
People could navigate quite efficiently with it.

I guess the quality of the map will continue to improve, especially when 
the orthorectified aerial imagery becomes available in real time.

I also used an app on my phone to record the GPS traces, however a 
dedicated GPS tracker has got some advantages. It is waterproof, it can 
record a GPS trace for many hours without discharging the battery of a 
communication device. A DIY ultra-low cost GPS tracker can be placed say 
on the roof of a car what I would not risk to do with a phone.

Best regards,
O.


On 12/30/19 14:41, 80hnhtv4agou at bk.ru wrote:
> yes i used a phone to check it out,
> but if the tracers are using old images, who to say the rest of the 
> world is correct.
> rivers, streams, trails, sidewalks dry flood ponds bus stops, gates, 
> fences, billboards phone towers, ect.
> *From:* Oleksiy Muzalyev
> *Sent:* Monday, December 30, 2019 6:00 AM
> *To:* 80hnhtv4agou at bk.ru
> *Cc:* OSM Talk
> *Subject:* Re: [OSM-talk] is OSM a fake map.
> You can make the map quite precise and up to date by employing a GPS 
> tracker. Here is, for example, a 431 km GPS trace which I recorded 
> with the Garmin 35 eTrex device (no affiliation) earlier this month in 
> Mexico from inside the bus: 
> https://connect.garmin.com/modern/activity/4330126920 . This GPS trace 
> is also published to the OSM map.
> Garmin 35 uses the EGNOS, the European Geostationary Navigation 
> Overlay Service, a satellite based augmentation system, in Europe, and 
> the WAAS, the Wide Area Augmentation System, in the North America. It 
> is capable to record a GPS trace for about 20 hours on a pair of cheap 
> alkaline AA batteries even from inside the train, bus, car, or on bicycle.
> It is possible to build a DIY, do-it-yourself, GPS tracker from and 
> Arduino type micro-controller [1] and a 15 USD GPS module [2]. The 
> total cost would be about 30.- USD. There are videos on Youtube on how 
> to do it.
> So one can record a GPS trace while cycling around a new building or a 
> park, then publish the GPS trace to the OSM map, and finally to map 
> them precisely and up to date in an editor by the GPS traces, even if 
> they are not on satellite images yet.
> [1] 
> https://www.banggood.com/Wholesale-ATMEGA328-328p-5V-16MHz-Pro-Mini-PCB-Module-Board-p-68534.html
> [2] 
> https://www.banggood.com/UBLOX-NEO-M8N-BN-880-Flight-Control-GPS-Module-Dual-Module-Compass-p-971082.html
> Best regards,
> Oleksiy
> On 12/29/19 22:46, 80hnhtv4agou--- via talk wrote:
>> i am talking about in my own back yard,
>> i just hiked a mile down the street to check it out, it was not the 
>> same when i was there in
>> 1985, but it did not match the mapper either.
>> to that end, bing is 2015 or 16,
>> as an example the county forest preserve map took from osm, so 
>> mappers have copied that and it is wrong
>> and how do you see thing under the trees unless you walk it.
>> so who is to say that any of OSM is not fake.
>> if all mappers are tracing.
>> *From:* john whelan
>> *Sent:* Sunday, December 29, 2019 1:08 PM
>> *To:* 80hnhtv4agou at bk.ru
>> *Cc:* OSM Talk
>> *Subject:* Re: [OSM-talk] is OSM a fake map.
>> I'm fairly lucky in that in the last three years nothing much has 
>> changed locally.  The highways have stayed much the same.  Most 
>> buildings are still there.
>> If you use Bing to add things then realistically it fills in gaps in 
>> the map. If you delete things because they are not in Bing that is a 
>> quite different matter.
>> Does it matter if the mapper lives more than five miles away?  Well 
>> I've mapped places a few thousand miles away but they were places I 
>> knew very well as I used to live there.
>> I don't think OSM will ever be completely accurate.  Having said that 
>> it is still very useful for many purposes.
>> Cheerio John
>> On Sun, 29 Dec 2019, 12:31 80hnhtv4agou--- via talk, 
>> <talk at openstreetmap.org> wrote:
>>
>>     it say in some wiki. to correct what you find wrong on the map,
>>     not one“other nearby users” is a current mapper, and all edits in
>>     a 5 mile radius are not coming from an on the ground
>>     mappers in my area but 20 miles + away and are tracing from bing,
>>     and the images on bing in my local area are from
>>     2016 so i do not see how the map locally is true, and it is not
>>     easy to go and see every thing they have done,
>>     no car or bike.
>>     every thing i do is backed up by me on mapillary, and in traces.
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