[osmosis-dev] One more question to Osmosis changefile

[Kai Behncke]

Dear users,

again a small question to osmosis.

I have compared osm-data from Osnabrueck (April vs. Oktober).

In the picture you see in red "changed objects" made by osmosis
(grey is unchanged):

http://www.kneipenculture.de/question.PNG


One thing I don`t understand. The Line with ID 27080265 in the picture is obviously grey (unchanged).

I had a look in the april.osm (here with a manually changed timestamp):

 <way id="27080265" version="1" timestamp="2009-11-03T22:02:29Z" uid="45289" user="Michael Held">
    <nd ref="297094272"/>
    <nd ref="297094271"/>
    <nd ref="297095385"/>
    <nd ref="297095386"/>
    <nd ref="297095387"/>
    <nd ref="297095389"/>
    <nd ref="297095393"/>
    <tag k="highway" v="residential"/>
    <tag k="maxspeed" v="30"/>
    <tag k="name" v="Riedstraße"/>                        <------ Riedstraße !!!
    <tag k="surface" v="paved"/>
  </way>

In the november.osm it is:
  <way id="27080265" version="1" timestamp="2009-11-03T22:02:29Z" uid="39072" user="Rene Westerholt">
    <nd ref="297094272"/>
    <nd ref="297094271"/>
    <nd ref="297095385"/>
    <nd ref="297095386"/>
    <nd ref="297095387"/>
    <nd ref="297095389"/>
    <nd ref="297095393"/>
    <tag k="highway" v="residential"/>
    <tag k="maxspeed" v="30"/>
    <tag k="name" v="Riedenstraße"/>             <------ Riedenstraße !!!
    <tag k="surface" v="asphalt"/>
  </way>


You see, that the user  and the name of the line has changed but it`s not integrated in the "change-file". Is this wanted?
I also tested if it would be seen as "changed" if I use in April timestamp="2009-4-03T22:02:29Z"
and in November timestamp="2009-11-03T22:02:29Z", but it`s not.

So that means: In the change file data with a changed timestamp/user/tags are in generally not integrated, right?

Objects are just integrated if the geometry is changed or they are new/not any more existent or get a new tag, right??

Thank you very much, Kai



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