[OSM-talk] Potlatch :-)

[Barnett, Phillip]

I had a quick look at Nuremberg in JOSM, and it does seem a slight exaggeration to say that 'half the city has gone' - in fact it all looks quite normal at first glance, assuming the usual radial symmetry of cities applies here. The original poster appears to have done A LOT of the city - pretty much the entire northern half of the city - and the bottom half appears normally present.

Of course, someone may have reverted the changes already. Uploaded a recent saved OSM file perhaps? Maybe all mappers should take frequent snapshots of 'their' area just in case catastrophe strikes?

Perhaps Karl could clarify the problem? (Incidentally, I don't think it's fair to castigate him for posting in German on an English mailing list - as far as I know Richard isn't a subscriber to the talk-de mailing list :-) and anyway, I understood the gist of what he said with my schoolboy German (and a quick check through the Google translator...

Cheers


 
 



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-----Original Message-----

From: talk-bounces at openstreetmap.org [mailto:talk-bounces at openstreetmap.org] On Behalf Of Richard Fairhurst
Sent: 22 November 2007 11:26
To: talk at openstreetmap.org
Subject: Re: [OSM-talk] Potlatch :-)

Jon Bright wrote:

> One suggestion that I do have: I don't understand exactly how someone
> managed to delete a large amount of data.

Yes, I think we could do with a bit more detail on the alleged offence.

I agree absolutely with your point. The challenge is to design a UI  
that makes Good Stuff easy and Bad Stuff hard! Potlatch tries to do  
this by "hiding" the one destructive action exposed to users -  
deleting ways - by requiring you to Shift-Delete. (That seems to work  
by the number of people on IRC who ask "how do you delete a way in  
Potlatch?" :) ) If you click a way and press Delete it will do nothing.

Brief digression - there did use to be one issue with merging ways  
where you could accidentally delete a way:

- User merges two ways
   (Potlatch does what you'd expect: adds way B to way A, deletes way A)
- User thinks "I've changed my mind, I didn't mean to do that"
- User presses Esc to revert
   (Potlatch reloads last saved version of way A)
- Result is that way B is "gone" (though still in history, of course)

That was fixed the other week. Now, Potlatch makes a little note  
internally that "way A had way B merged into it", so when you press  
Esc to revert, it reloads both A and B. So that one's closed.

The undelete/revert stuff is potentially really froody. If someone  
tests it this morning it can go live this afternoon.

> Keep up the good work.

Thanks!

cheers
Richard


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