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<div class="moz-cite-prefix">On 2019-03-13 15:27, Mateusz Konieczny
wrote:<br>
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<blockquote type="cite" cite="mid:L_rRnMw--7-1@tutanota.com">
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<div style="16px" text-align="left">Mar 13, 2019, 12:53 PM by
<a class="moz-txt-link-abbreviated" href="mailto:smz@smz.it">smz@smz.it</a>:<br>
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<div class="">On 2019-03-13 12:15, Tom Pfeifer wrote:<br>
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<blockquote type="cite">I think you misunderstand. OSM is based
on locally sourced, handcrafted data. That creates the high
quality. <br>
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<p>That's totally inaccurate.<br>
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<p>The reality is that OSM is based on imported data, augmented
by locally sourced information (<i>of </i><i><i>sometimes </i>questionable
quality</i>).<br>
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<p>Sergio<br>
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<div style="16px" text-align="left">[citation needed]<br>
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<div style="16px" text-align="left">It may be true in some rare
regions, in many cases real mapping requires deletion of
substandard<br>
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<div style="16px" text-align="left">imports dumped into OSM (see
TIGER mess in USA, low quality landcover in Slovakia making <br>
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<div style="16px" text-align="left">mapping a horrible
experience).<br>
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<div style="16px" text-align="left">Describing OSM as "imported
data, augmented by" is as far as I known complete
misrepresenting the<br>
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<p>I haven't said that OSM *is* imported data, but that it is *based
on* imported data: that's different. And I never said that the
"augmentation" contributed by mappers is of irrelevant importance
(<i>even if sometime the quality is sub-par</i>).<br>
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<p>Have mappers walked along the whole world coastlines? Have they
descended all world's rivers by canoe? Have all Mumbay, New York,
Rome, Shanghai, etc., streets and alleys been walked by volunteers
mapping their location and names? All the peaks escalated?</p>
<p>Sergio<br>
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