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--></style></head><body lang=EN-US link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span lang=EN-GB>Hi marc,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>I am one that checks both the source and the history of changes to understand why a features was created and from where.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>JOSM does already have a history and can be accessed by selecting the feature then holding down the Ctrl key and pressing h. The history comes up in a separate window with the changesets as well.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>Source tags are very useful especially if done correctly. I rate a GPS, Field Survey or Local Knowledge quite high because it means someone has actually been there and seen it. I add the date of my visit to a place in my changeset comment for that reason. It also helps to identify how old my knowledge is. The date of change I can also get from Ctrl + h. The background imagery (Bing) can be anything up to 6 years old in many places and at best about 2 years old so it is not reliable for up-to-date information.</span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986">Mail</a> for Windows 10</p><p class=MsoNormal><o:p> </o:p></p><div style='mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='border:none;padding:0in'><b>From: </b><a href="mailto:marc_marc_irc@hotmail.com">marc marc</a><br><b>Sent: </b>Saturday, July 22, 2017 11:11 PM<br><b>To: </b><a href="mailto:tagging@openstreetmap.org">Tag discussion, strategy and related tools</a><br><b>Subject: </b>[Tagging] source tag on object <> changeset</p></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I create a new thread because it have no link with a tree :-)</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Le 22. 07. 17 à 22:20, ael a écrit :</p><p class=MsoNormal> > On Sat, Jul 22, 2017 at 08:51:16PM +0200, Simon Poole wrote:</p><p class=MsoNormal> >> a) good practice to tag source on the changeset.</p><p class=MsoNormal> > I always include a fairly comprehensive list</p><p class=MsoNormal> > of sources on changesets, but *need* individual source tags</p><p class=MsoNormal> > on objects. Otherwise, subsequent mappers come along with</p><p class=MsoNormal> > far inferior information and wipe out my many hours/days/years of</p><p class=MsoNormal> > careful work on the ground.</p><p class=MsoNormal>This problem exists for any tag. Where does the localization for a </p><p class=MsoNormal>crossing come from? Gps / aerial? What is the date of this ?</p><p class=MsoNormal>I don't imagine that we triple all the tag to have source+date just in </p><p class=MsoNormal>case someone doesn't read changesets when he thinks that an object needs </p><p class=MsoNormal>improvement.</p><p class=MsoNormal>If he doesn't read changesets, will he pay attention to your source tag?</p><p class=MsoNormal>In my edit, I delete often previous source tag.</p><p class=MsoNormal>Because if I modify an object after survey, a previous source=bing for </p><p class=MsoNormal>example on an object no longer say anything usefull.</p><p class=MsoNormal>I don't add source tag on object for the same reason.</p><p class=MsoNormal>What would be useful is to have a link beside each tag indicating the </p><p class=MsoNormal>last changeset that touched it.</p><p class=MsoNormal>Or maybe a josm plugin can parse the history of the object</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Regards,</p><p class=MsoNormal>Marc</p><p class=MsoNormal>_______________________________________________</p><p class=MsoNormal>Tagging mailing list</p><p class=MsoNormal>Tagging@openstreetmap.org</p><p class=MsoNormal>https://lists.openstreetmap.org/listinfo/tagging</p><p class=MsoNormal><o:p> </o:p></p></div></body></html>