Hi Greg,

in addition to Daves commnets I'd like to mention that you can use the output

of splitter as a separate layer in JOSM. I sometimes use this when I cut large 
multipolygon

relations : one layer with the old data from splitter, one with the mapnik layer

(tms[19]:https://{switch:a,b,c}.tile.openstreetmap.org/{zoom}/{x}/{y}.png)

and one with the downloaded data. Switching between those layers allow to 
compare.


Maybe that helps ?


Gerd

P.S. I still think about adding an --keep-version option to splitter, but for 
other reasons.


________________________________
Von: [email protected] 
<[email protected]> im Auftrag von Dave Swarthout 
<[email protected]>
Gesendet: Montag, 29. Februar 2016 05:31
An: Development list for mkgmap
Betreff: Re: [mkgmap-dev] Problem uploading data to JOSM wit 20 hour old OSM 
data, maybe a SPLIITTER issue?

Greg,

Using JOSM and working with data that other people are also working with is a 
recipe for disaster. Resolving the inevitable conflicts that will arise is 
tedious and complicated. I have spent hours resolving conflicts made by "the 
other user" only to find out later that it was _my own data_ I was working 
against. The method you're trying to use will only work well if you're the only 
person modifying the data in that particular part of the world.

Another possibility is to download smaller areas to work in which will keep the 
number of edits down. That way you won't have thousands of conflicts when you 
do get Internet again. And if you do, you won't lose much work.

Not very satisfying I'm afraid but working with a live Internet connection is 
by far the best option.

On Sun, Feb 28, 2016 at 9:42 PM, greg crago 
<[email protected]<mailto:[email protected]>> wrote:
I have thousands of map errors I have collected on my GPS from ground 
observations. I just have not had time to upload them to OSM. I do not have 
Internet access all the time.

Downloading many states and then breaking them up using a 'splitter-type' 
program, gives me the flexibility to edit sections of the country I want to.

I thought UPLOAD conflicts only occur when objects I HAVE MODIFIED, conflict 
with objects in the OSM database that have been modified since I download MY 
VERSION. If I have large areas of 'outdated' OSM data, that I do not modify, I 
should not have any problems when I upload, since I am not sending that 
'untouched' data back to OSM, correct?

I thought this was a viable 'offline' solution. I do not know how to filter 
overpass to download state-by-state regions. GEOFABRIK has already done this, 
if SPLITTER kept the version dataset information., I could use it.

Greg

On Sat, Feb 27, 2016 at 4:08 PM, Nelson A. de Oliveira 
<[email protected]<mailto:[email protected]>> wrote:
On Sat, Feb 27, 2016 at 5:44 PM, greg crago 
<[email protected]<mailto:[email protected]>> wrote:
> I want to download sections of the osm database (USA- Michigan) and make off
> line changes in JOSM and upload back to OSM when I am back online.

Will you edit the whole state?
Do you really need to have all of it?

Editing large areas and a lot of objects isn't usually the best thing
to do: it can cause duplicate data in OSM and/or you will hit a lot of
conflicts.

overpass is the easiest way to get fresh data, but you need to filter
a smaller region or some specific data that you want.
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--
Dave Swarthout
Homer, Alaska
Chiang Mai, Thailand
Travel Blog at http://dswarthout.blogspot.com
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