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<div class="moz-cite-prefix">I would add - the objective problems.
In the 20th century, when these legacy databases were created,
there was no GPS, no satellite imagery as we know it. Officials
had to actually walk and use manual tools to map properties what
is certainly prone to human errors. Databases themselves were
unreliable, the data was often got corrupted or partially
corrupted at the drop of a hat, the first versions of MySQL and
PostgreSQL appeared by the end of 90s only.<br>
<br>
Nowadays, when the e-commerce requires imagery processing on an
industrial scale, a lot of automatic optical shape & patterns
recognition software is being developed, because a product has to
be extracted from a background to get a "flying on air" style. But
in the product photography a photo-studio with the controlled
conditions could be used, besides there are billions of new
products each year, and this process will never end.<br>
<br>
It is quite different with the Earth surface. We've got a finite
amount of land to map. There will be no new land (neither on Earth
nor on other planets, at least not in a foreseeable future).
Besides new technologies arrive, like better satellite imagery
quality, more GPS-style systems, affordable industrial grade RPAS,
faster databases, better editing tools, better displays, etc.<br>
<br>
There is place for legacy maps. I myself like to view historical
maps, but I am not sure that it makes sense to import massively
this historical data into the main OSM map.<br>
<br>
Best regards,<br>
Oleksiy<br>
<br>
On 8/16/2017 1:44 PM, john whelan wrote:<br>
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<blockquote type="cite"
cite="mid:CAJ-Ex1HWbvARNJhOGLqWaNLKjnPLGP5CCJwnwUGtx5Cj9AxyWw@mail.gmail.com">
<div dir="ltr">...There have been problems in the past with the
data quality of imports ...<br>
<div class="gmail_default"
style="font-family:verdana,sans-serif;font-size:small"><br>
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<div class="gmail_default"
style="font-family:verdana,sans-serif;font-size:small">Cheerio
John<br>
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