<div dir="auto"><div>I would personally prefer it if a certain bit of software said "GPX traces" or similar for the public traces rather than "survey" when autofilling sources, but I never remember to raise it in the bug tracker.<br><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, 10 Mar 2020, 18:09 Volker Schmidt, <<a href="mailto:voschix@gmail.com">voschix@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>My personal approach: when I map I routinely use three sources in parallel: survey, GPX track, Mapillary images, satellite photos (picking the one with the most up-to -date pictures in the area, and aligning them to the Italian PCN2006 pictures, which are by our experience the best-aligned pictures available here).</div><div>As a consequence (I am not always consistent, to be honest) I would have something like "source=survey; GPX tracks; Mapillary; Esri Images aligned with PCN2006"</div><div>But my mapping is often not anything near to armchair mapping, I am using the images in addition to the other tools. <br></div><div>I would not consider the fact that sattellite images are used, on its own as an indication that the date need to taken with caution.</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, 10 Mar 2020 at 15:54, Sören Reinecke <<a href="mailto:tilmanreinecke@yahoo.de" target="_blank" rel="noreferrer">tilmanreinecke@yahoo.de</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Yes, I thought also about this and planned it to integrate in my concept.<div style="line-height:1.5"><br><br>-------- Original Message --------<br>Subject: Re: [OSM-talk] Announcing Daylight Map Distribution<br>From: Joseph Eisenberg <u></u><br>To: Sören Reinecke <u></u><br>CC: Volker Schmidt <u></u>,<a href="mailto:talk@openstreetmap.org" target="_blank" rel="noreferrer">talk@openstreetmap.org</a><br><br><br type="attribution"><blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">My understanding is that the common way to describe armchair mapping,<br>based on aerial imagery, is to identify the imagery source. So I often<br>write:<br><br>Changeset Comment: "Added and adjusted streams and rivers near Oksibil<br>with ESRI"<br>Changeset Source: "Esri world imagery"<br><br>This makes it clear that I used Esri imagery to map the streams and<br>rivers, right?<br><br>- Joseph Eisenberg<br><br>On 3/10/20, Sören Reinecke via talk <u></u> wrote:<br>> Hey<br>><br>> some ideas about identifying such changes:<br>><br>><br>> Example changeset comment where a mapper did armchair mapping:<br>> Data updated, added amenity=restaurant<br>> #armchair<br>><br>> In addition if the mapper works for a company:<br>> #<br>> e.g. #facebook<br>> #amazon<br>> #microsoft<br>> #apple<br>><br>> Example changeset comment where a mapper did a survey and added data as<br>> (s)he saw it (from the ground):<br>> #survey<br>><br>><br>><br>> This way we can organize our changes and Facebook and other companies and<br>> the community as well know how to validate and can distinguish changesets<br>> from another. I could create a wikipage where we think about this "changeset<br>> governance"<br>><br>> Cheers<br>><br>> Sören Reinecke alias Valor Naram<br>><br>><br>> -------- Original Message --------<br>> Subject: Re: [OSM-talk] Announcing Daylight Map Distribution<br>> From: Volker Schmidt<br>> To: <a href="mailto:talk@openstreetmap.org" target="_blank" rel="noreferrer">talk@openstreetmap.org</a><br>> CC:<br>><br>><br>>><br>>><br>>>> Fixing stuff in OSM purely from imagery may not be good.<br>>>><br>>>> A local mapper who sees something may add it before any satellite imagery<br>>>> has it.<br>>>><br>>>> If you then 'fix' this back to the satellite imagery you will have<br>>>> committed an error,<br>>>> and that error may dissuade our most important resource from ever making<br>>>> any further changes- the local mapper.<br>>>><br>>>> Be very careful!<br>>><br>>><br>>> I second this last line !<br>>><br>>> I am observing an influx of mixed-quality remote edits from Amazon<br>>> Logistics in my area.<br>>> I expect this Facebook operation to produce much more changes or potential<br>>> changes (=suspected errors).<br>>> What we need for both cases and similar ones in the future is a way of<br>>> being able to identify such changes, which by their nature will be<br>>> armchair-mapping efforts.<br>>> I do not have a specific proposal, but I would appreciate a tool that<br>>> helps me, as local mapper, find these edits, and, more importantly we<br>>> need a new approach to organise digesting these massive distributed<br>>> armchair-mapping interventions on OSM data.<br>>> I don't realistically think that banning these activities is good for OSM.<br>>> Not dealing in a systematic way with it at all presents, however, a big<br>>> risk of deteriorating the map for two reasons:<br>>> (1) bad armchair edits by Amazon and Facebook (and others)<br>>> (2) demotivating non-armchair mappers<br>>><br>>> I repeat I do not have a proposal how to handle that. My main concern is<br>>> that the required work for locally checking even only those edits that<br>>> need checking (I am assuming that at least FB has good algorithms to sort<br>>> out the dead-certain corrections beforehand. I am more sceptical with<br>>> Amazon's changing local access tagging to, essentially, "yes" everywhere<br>>> they have delivered something by delivery van. I came across a good number<br>>> of them, and in most cases they were at least dubious)<br>>><br>>> Volker<br>>> (Padova, Italy)<br>><br></blockquote></div></blockquote></div>
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