Overpass API developpement

[Roland Olbricht <>]

Hi Michael,

> This is driving me crazy.

Thank you for working on this.

I'll try ASAP to reproduce the issue here with
> http://osmd.ch/small.osc
and the current minor_issues branch.

Are the debug messages gone?

> > runtime error: Way 22701281 cannot be expanded at timestamp
> 2008-05-03T21:42:14Z: Bad geometry for way 22701281
>
> The strange thing is: I requested 2008-01-01, so why does it bother with
> something created later?

An attic way is always stored as a delta to the next newer version. I've 
chosen that design to favor requests for the current data; these request 
are by far the most common.

> Then I tried to create a historical extract with osmium-tool from
> 2008-01-01, import that extract, then import the full change file. This
> leads to a similar error, just with another way id and timestamp:
>
> > runtime error: Way 32889548 cannot be expanded at timestamp
> 2012-02-15T14:05:02Z: Bad geometry for way 32889548

A wild guess: there is a bug in the Overpass software that is triggered 
only by redaction artifacts or by residuals from maybe an old bug in the 
Rails Port in the pre-OdBL OSM files.

Please stay tuned and wait whether I can reproduce the issue here.

Best regards,

Roland