<div dir="ltr"><div class="gmail_extra"><br><div class="gmail_quote">2014-06-11 15:46 GMT+02:00 Jochen Topf <span dir="ltr"><<a href="mailto:jochen@remote.org" target="_blank">jochen@remote.org</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div id=":2ox" class="a3s" style="overflow:hidden">Of course you can not guarantee that they are "individually verified", that<br>
is kind of my point. Why do I have to guarantee something that somebody<br>
tracing buildings from 10 year old aerial images doesn't have to guarantee?</div></blockquote></div><br><br>I think the word "respect" is key here. Changing the tags that someone else has decided to put is different to entering new data that wasn't there before. Besides this I haven't mapped in any context where the available aerial imagery was 10 years old, but would generally suggest to use them only for areas you do know in person. Around here there are two "main" aerial imagery sets available dating to 2012 and 2013, and there are some differences to todays reality already in those.<br>
<br></div><div class="gmail_extra">cheers,<br>Martin<br></div></div>