<div dir="auto">Com a devida vénia, e para que tenha a maior divulgação possível, um texto do Nuno Caldeira, publicado no seu diário OSM.<div dir="auto">
<h1>
<a href="https://www.openstreetmap.org/">
<img alt="Logotipo do OpenStreetMap" src="https://www.openstreetmap.org/assets/osm_logo-1dde6669365d9e3e9cfebe133a42a75ea8bedf84a43b3d6f7e124c62ca48be84.png">
OpenStreetMap
</a>
</h1>
<a href="https://www.openstreetmap.org/user/NunoCaldeira/diary/391065#"></a>
<div dir="auto">
<div>
<div>
<div>
<img alt="" src="https://www.openstreetmap.org/rails/active_storage/representations/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBbWxQIiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--6d867aab4163f8f8fd79685a826787f67aca896b/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaDdCam9MY21WemFYcGxTU0lOTVRBd2VERXdNRDRHT2daRlZBPT0iLCJleHAiOm51bGwsInB1ciI6InZhcmlhdGlvbiJ9fQ==--efdc66963555b7419037018ba117eb1fea762dc5/003.jpg">
<h2><a href="https://www.openstreetmap.org/user/NunoCaldeira/diary">Diário de NunoCaldeira</a></h2>
<p><a href="https://www.openstreetmap.org/user/NunoCaldeira/diary/rss"><img src="https://www.openstreetmap.org/assets/RSS-1176cfad9def2a73ee8ea6c6f50bd05b929b8bc83b8bd542ab934dbabb6a8654.png" width="16" height="16" border="0"></a></p>
</div>
</div>
</div>
<div>
<div>
<div>
<div>
<h2><a href="https://www.openstreetmap.org/user/NunoCaldeira/diary/391065">Validating Parks from Pokemon Go users (well mostly...)</a></h2>
<small>
Colocado por <a href="https://www.openstreetmap.org/user/NunoCaldeira">NunoCaldeira</a> a 27 Outubro 2019 em <a href="https://www.openstreetmap.org/diary/en">English (English)</a>
</small>
</div>
<div>
<p>Recently at the Portuguese OpenStreetMap Telegram group we have
been discussing the issue of the Pokémon Go! Players that become OSM
contributors with bad intentions, by adding fake parks or wrongly to
their ingame interest.</p>
<p>We decided to check how many parks existed in Portugal by using <a href="https://overpass-turbo.eu/s/NtN">overpass turbo</a> back in August (kudos to <a href="https://www.openstreetmap.org/user/luisforte">Luis Forte</a> for the help). To our surprise there was over 7000 parks. We decided to create a <a href="https://maproulette.org/browse/challenges/9053">map roulette mission</a>
to validate the parks. Some are indeed hard to validate by arm chair
mapping, some are not. Up til now we have validated 20% of the parks on
OSM and acknowledged that more than 12 percent were indeed badly tagged
and only 7% were correctly tagged.</p>
<p>As example,gardens of private property or grass in roundabouts.
<img src="https://i.ibb.co/9HkZrXT/rotunda.jpg" alt="https://maproulette.org/challenge/9053/task/24888572">
<a href="https://maproulette.org/challenge/9053/task/24888572">https://maproulette.org/challenge/9053/task/24888572</a></p>
<p><img src="https://i.ibb.co/T4zwk1S/private.jpg" alt="https://maproulette.org/challenge/9053/task/2488485599">
<a href="https://maproulette.org/challenge/9053/task/2488485599">https://maproulette.org/challenge/9053/task/2488485599</a></p>
<p><img src="https://i.ibb.co/5WNnsMh/grass.jpg" alt="https://maproulette.org/challenge/9053/task/24883197">
<a href="https://maproulette.org/challenge/9053/task/24883197">https://maproulette.org/challenge/9053/task/24883197</a></p>
<p>During this we acknowledge that some of these tags were added long
before Pokémon Go existed,which left us intrigued. We investigated that
most of the users were using id editor and realized that the translation
on <a href="https://www.transifex.com/openstreetmap/id-editor/language/pt/">Transifex to Portuguese</a>
was mixing synonymous of gardens, grass and some of those were done by
Brazilians (for those that are not familiar, Portuguese from Portugal
and Brazilian Portuguese have even harder differences than English from
UK or English from USA). We decided that the translation needed to be
fixed, <a href="https://www.openstreetmap.org/user/Antmadeira">António Madeira</a>
and myself started to translate what’s not translated and validating
what already was. This should be an example to none English communities
as having translators that have a high knowledge of OSM tags, discussing
the best words to be added to synonymous of tags is crucial to have a
consistent translation to id, which is the most used editor on OSM
world. This is an important step to avoid misleading tags to
newcomers,but obviously won’t fix everything as some will add the park
tag for their own Pokemon Go activity.</p>
<p>Therefore we decided until the map roulette mission is going and probably afterwards, we have a <a href="https://osmcha.mapbox.com/filters?aoi=856dc896-738e-4527-86e3-f5e21c74d076">OSMCHA filter</a>
to flag the new parks being added with Reasons for Flagging “Park
added by new user”.
Everyday or two days we check and enquiry the contributor about the park
that they recently added, the concept of what a park is does not meet
our OSM tag. As common examples we have contributors using park for
gardens or for picnic sites. City halls usually refers to parks, gardens
or picnic sites in Portugal as “Parque” which misleads contributors
that are not informed of the OSM park tag. If the contributors does not
reply, continues to edit and we do an internet search and can’t find any
reference to the park in question,the tag is changed to garden. Red
flags are parks that either have the word garden (Jardim in Portuguese)
or that have been added without name. Common sense is an important key
on this, don’t be a dictator and explain to the contributor what a <a href="https://wiki.openstreetmap.org/wiki/Tag:leisure%3Dpark">park is in OSM</a>.</p>
<p>The map roulette mission is still available, feel free to contribute
as mentioned some don’t require knowledge about the area in question are
can easily be fixed remotly.
Tip: activate the nearby feature on map roulette, usually a contributor
that added parks wrongly added multiple wrong tags in the same are,
which you can edit as a batch quickly to avoid going back and forth
between Map Roullete and the editor of your choice. In case of doubt,
skip, we will deal with the ambiguous ones later when the mission is
completed</p>
<p><a href="https://maproulette.org/browse/challenges/9053">Map Roullete mission link</a></p>
<p>Thanks to those that already helped validating 20% of the parks in Portugal.</p>
</div>
Localização:
<a href="https://www.openstreetmap.org/#map=14/32.7242738371825/-16.9661865150556">
<abbr title="32,7243; -16,9662">
Achada, Nuns Valley, Câmara de Lobos, Madeira, 9325-137, Portugal
</abbr>
</a>
<ul></ul>
</div>
<div>
</div>
<div>
<h3><a href="https://www.openstreetmap.org/login?referer=%2Fuser%2FNunoCaldeira%2Fdiary%2F391065">Iniciar sessão</a> para deixar um comentário</h3>
</div>
</div>
</div>
</div></div></div>