Re: [OSM-talk] Changeset Governance [was: Announcing Daylight Map Distribution]

2020-03-23 Thread Martin Koppenhoefer
I agree with Greg that there are lots of shades. E.g. places I have been to
but not recently (may have changed). I try to describe these facets in the
changeset comments with phrases like "no specific local knowledge" (means I
do know the area, but not the place I have edited, as opposed to "no local
knowledge"=no clue). Or "no recent local knowledge" (I know the place from
the past but have not been there recently).

Cheers
Martin
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Re: [OSM-talk] Changeset Governance [was: Announcing Daylight Map Distribution]

2020-03-23 Thread Yves
I always put survey+imagery in the last 3 cases. 
Yves 


Le 23 mars 2020 18:43:23 GMT+01:00, Greg Troxel  a écrit :
>> Subject: Re: [OSM-talk] Changeset Governance [was: Announcing
>Daylight Map Distribution]
>> From: Frederik Ramm 
>>
>>> Nothing against the idea but what happened to the good old source
>tag
>>> where source=survey would point to mappers on the ground, and
>>> source=XYZ
>>> aerial imagery would point to armchairing?
>
>I'm very sympathetic to knowing the on-ground-ness of a change.  But I
>think it's shades of gray.  This list illustrates what I mean:
>
>* armchair
>
>a place I have never been to, and which is so far away that I am not
>familiar with the customs.  An example would be me (US) editing in
>Africa.
>
>* country-armchair
>
>as above, but I know the country norms.  Me editing in Glacier National
>Park.
>
>* local-armchair
>
>as above, but I know the region norms.   If I edited some town in MA
>that I haven't visited (perhaps because I was going to visit), but I
>generally know how things are.
>
>* visited but mapping done by imagery
>
>Here, I am editing a place where I've been at some point reasonably
>recently and have some clue, but my edits are based on imagery.
>However, my recollection is good enough to avoid most of the armchair
>issues.   An example is me fixing up crosswalks and sidewalks two towns
>away, but not from field mapping notes.   I don't consider this
>armchair, but it's iffy.
>
>* editing soon after a visit
>
>I got someplace, maybe make notes, maybe remember, and edit based on
>some combination of imagery, gpx tracks, notes and memory.   I think
>this is squarely not armchair.
>
>* editing while there
>
>Actually using an editor while being in the place being edited.
>
>
>
>I would basically split this into three armchair and three not
>armchair.
>
>
>
>
>So basically I think source including imagery does not really imply
>"armchairing", in that the use of imagery is not the point, but a lack
>of familiarity with what's on the ground.  I almost always load and
>look
>at imagery when editing after being in the field.  I line up ways from
>imagery when that works, becuase I have come to believe from experience
>(with specific imagery sources) that this is more accurate than my gps
>tracks.
>
>(I have been experimenting with raw GPS data and post-processed PPP
>solutions, and those I think are close to good imagery.)
>
>
>
>
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Re: [OSM-talk] Changeset Governance [was: Announcing Daylight Map Distribution]

2020-03-23 Thread Greg Troxel
> Subject: Re: [OSM-talk] Changeset Governance [was: Announcing Daylight Map 
> Distribution]
> From: Frederik Ramm 
>
>> Nothing against the idea but what happened to the good old source tag
>> where source=survey would point to mappers on the ground, and
>> source=XYZ
>> aerial imagery would point to armchairing?

I'm very sympathetic to knowing the on-ground-ness of a change.  But I
think it's shades of gray.  This list illustrates what I mean:

* armchair

a place I have never been to, and which is so far away that I am not
familiar with the customs.  An example would be me (US) editing in Africa.

* country-armchair

as above, but I know the country norms.  Me editing in Glacier National
Park.

* local-armchair

as above, but I know the region norms.   If I edited some town in MA
that I haven't visited (perhaps because I was going to visit), but I
generally know how things are.

* visited but mapping done by imagery

Here, I am editing a place where I've been at some point reasonably
recently and have some clue, but my edits are based on imagery.
However, my recollection is good enough to avoid most of the armchair
issues.   An example is me fixing up crosswalks and sidewalks two towns
away, but not from field mapping notes.   I don't consider this
armchair, but it's iffy.

* editing soon after a visit

I got someplace, maybe make notes, maybe remember, and edit based on
some combination of imagery, gpx tracks, notes and memory.   I think
this is squarely not armchair.

* editing while there

Actually using an editor while being in the place being edited.



I would basically split this into three armchair and three not armchair.




So basically I think source including imagery does not really imply
"armchairing", in that the use of imagery is not the point, but a lack
of familiarity with what's on the ground.  I almost always load and look
at imagery when editing after being in the field.  I line up ways from
imagery when that works, becuase I have come to believe from experience
(with specific imagery sources) that this is more accurate than my gps
tracks.

(I have been experimenting with raw GPS data and post-processed PPP
solutions, and those I think are close to good imagery.)




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Re: [OSM-talk] Changeset Governance [was: Announcing Daylight Map Distribution]

2020-03-23 Thread Sören Reinecke via talk
Hello again,

very big sorry for the delay, was bussy :)

I updated the page 
https://wiki.openstreetmap.org/wiki/Changeset/Governance to include
your points of corrections. I also generalized it to comply with
writing standards of the OpenStreetMap Wiki Community.

Sry to have created the page in the namespace of "Changeset". But I
made it clear that it is a stub and not official. My aim is inspiration
rather than dictation.

Cheers

Sören Reinecke alias Valor Naram

-Original Message-
From: Sören Reinecke via talk 
Reply-To: Sören Reinecke 
To: Frederik Ramm , talk@openstreetmap.org
Subject: Re: [OSM-talk] Changeset Governance [was: Announcing Daylight
Map Distribution]
Date: Tue, 10 Mar 2020 21:14:25 +0100

> aerial imagery would point to armchairing?

no. Changesets made during armchair mapping need to include the hashtag
"#armchair" and the source the mapper used in the `source` changeset
tag.

> happened to the good old source tag
where source=survey would point to mappers on the ground

in my recent commit I changed the idea to include `source=survey` for
changesets made during surveys.

Cheers

Sören Reinecke alias Valor Naram

 Original Message 
Subject: Re: [OSM-talk] Changeset Governance [was: Announcing Daylight
Map Distribution]
From: Frederik Ramm 
To: talk@openstreetmap.org
CC: 


> Hi,
> 
> On 3/10/20 18:48, Sören Reinecke via talk wrote:
> > *Spirit of Changeset Governance:* Basically it introduces a way to
> > distinguish a changeset made during a survey from a changeset made
> > during armchair mapping using information received from imagery or
> > external data. In the spirit of more professional Quality Assurance
> a
> > way for us and the performers to better control validation
> processes and
> > to take actions more precisely.
> 
> Nothing against the idea but what happened to the good old source tag
> where source=survey would point to mappers on the ground, and
> source=XYZ
> aerial imagery would point to armchairing?
> 
> Bye
> Frederik
> 
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