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<div class="moz-cite-prefix">Good morning,</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">I agree that the existing tags are to
be used. And they should be used correctly, as it's described in
the wiki. It is applicable not only to professional but also to
hobby mapping. <br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">I think that it makes sense to survey
objects before mapping by physically visiting them. During a
survey one can record the GPS traces around the object of
interest. It could be done with a dedicated GPS unit.</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">A modern GPS unit is capable to record
traces for 24+ hours without interruption. So even the approaching
roads (or railroads) could be traced. Having these traces in a map
editor will let us see that the satellite images are aligned
correctly, or to see if the satellite imagery outdated and what is
not on it yet.</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">It is also possible to make some ground
and aerial (oblique & vertical) HD photos of the object from
different angles during survey. And not only of the building
itself, but also of other POIs around such as say bus or tram
stops. <br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">Having the photos from the survey would
allow to add later the building levels, opening hours, bus stops
names, etc. It is possible to upload the best selected photos to
the Wikimedia or Flickr (after blurring vehicle registration
plates and faces on them for privacy) and publish the
corresponding links on the OSM map, so that other mappers can use
these images too. Before uploading photos, the GPS coordinates can
be added to them automatically from the recorded GPS trace.</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">Another big survey topic is the
elevation [1]. Human settlements are usually located near water.
It could be of interest to know if an object is above or below the
water level of a nearby sea, lake, or river, since the risk of
flood could be evaluated. However, measuring an elevation with an
altimeter [2] is not as simple as it sounds, but it is doable.</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">My point is that the good mapping, both
amateur and professional, could involve not only mapping via the
satellite imagery, but also the on-the-ground surveys using such
modern tools as the dedicated GPS units, ultra-light quad-copters,
portable HD photo-cameras, altimeters, etc. Sometimes it is not
possible to understand from the vertical satellite image, seeing
only the rectangle of the roof and the shadow, what the object is
exactly, how many levels it has, what additional features or
services it contains. Besides, the satellite imagery in some areas
could be outdated or misaligned, and a survey also helps to
understand to what degree, so that we use it properly.</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">[1]
<a class="moz-txt-link-freetext" href="https://wiki.openstreetmap.org/wiki/Key:ele">https://wiki.openstreetmap.org/wiki/Key:ele</a></div>
<div class="moz-cite-prefix">[2]
<a class="moz-txt-link-freetext" href="https://en.wikipedia.org/wiki/Altimeter">https://en.wikipedia.org/wiki/Altimeter</a></div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">Have a good day!</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">Best regards,</div>
<div class="moz-cite-prefix">Oleksiy<br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">On 9/11/20 22:06, James wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CANk4qi98KKEWp5wNmw10g6e-=CmRrjcyvE4hv261S03oCD-j-w@mail.gmail.com">
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<div dir="auto">I've been paid in the past to do mapping for
someone, but I was already an active experienced osm mapper
beforehand.
<div dir="auto"><br>
</div>
<div dir="auto">How to be successful:</div>
<div dir="auto"><br>
</div>
<div dir="auto">В Listen to osm experts/community and not fight
against them</div>
<div dir="auto"><br>
</div>
<div dir="auto">Use existing tags on the wiki, don't invent your
own</div>
<div dir="auto"><br>
</div>
<div dir="auto">Verify data accuracy as muchВ as you can, not
dump data</div>
<div dir="auto"><br>
</div>
<div dir="auto">When merging data, verify if data is older than
yours, locals usually have a better sense of what
buildings/pois have been demolished/exist</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Fri., Sep. 11, 2020, 3:56
p.m. MichaЕ‚ Brzozowski, <<a
href="mailto:www.haxor@gmail.com" moz-do-not-send="true">www.haxor@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="auto">Hi all,
<div dir="auto">Do we have any examples of companies that do
paid mapping (preferably at scale) and do it right?</div>
<div dir="auto">Maybe leading by example will help other
mapping teams get along better with local OSM communities?</div>
<div dir="auto"><br>
</div>
<div dir="auto">MichaЕ‚</div>
<div dir="auto"><br>
</div>
</div>
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