[OSM-dev] Osmium - "Corruption" when writing PBF

[Jochen Topf]

Hi!

You already asked this on Sep 1, and I told you then that we might be able to
help you if you post your code. We are not magicians you know!

Jochen

On Wed, Sep 21, 2011 at 12:57:15AM -0400, Pris Matic wrote:
> Date: Wed, 21 Sep 2011 00:57:15 -0400
> From: Pris Matic <prismatic.project at gmail.com>
> To: dev at openstreetmap.org
> Subject: [OSM-dev] Osmium - "Corruption" when writing PBF
> 
> Hi all,
> 
> I'm trying to use Osmium to read in OSM data from *.osm.pbf files, add
> certain tag data and then write it out again to *.osm.pbf. I'm able to do
> this with smaller files, (city level), but when I try to do state/provincial
> level I run into 'corruption', where the tag data becomes completely mixed
> up and unusable. It's a strange problem -- the tag keys and values are
> 'preserved', but they are all mixed, seemingly at random.
> 
> Here is an example:
> 
> way:
>   id=7948229
>   version=1
>   uid=5168
>   user=|43.637614,-79.424110|
>   changeset=505735
>   timestamp=2007-09-23T19:11:20Z
>   tags:
>     k=|43.208074,-80.002507| v=|Book Road|
>     k=|43.402130| v=|43.191320,-79.935827|
>     k=|43.398032,-79.793599| v=|43.191382,-79.935896|
>     k=|43.398144,-79.792577| v=|43.191420,-79.936025|
>     k=|43.398410,-79.791691| v=|43.191414,-79.936282|
>     k=|43.670969,-79.295439| v=|-79.936007|
>     k=|43.670595,-79.295294| v=|43.191384|
>   node_count=4
>   nodes:
>     ref=59222301
>     ref=59222588
>     ref=59222589
>     ref=59222590
> 
> I'm saving node geometry data for certain ways. Here's an example of what
> the key/value pairs look like when they are correct:
> 
> way:
>   id=75168646
>   version=1
>   uid=5640
>   user=|MikeyCarter|
>   changeset=5631822
>   timestamp=2010-08-29T23:21:59Z
>   tags:
>     k=|my_startaddr| v=|724|
>     k=|my_street| v=|City Road|
>     k=|0| v=|48.354900,-89.284862|
>     k=|1| v=|48.356371,-89.279541|
>     k=|2| v=|48.356387,-89.279429|
>     k=|my_endaddr| v=|700|
>     k=|3| v=|48.356431,-89.277626|
>     k=|avg_lon| v=|-89.280365|
>     k=|avg_lat| v=|48.356022|
>   node_count=4
>   nodes:
>     ref=886971214
>     ref=887071818
>     ref=886990640
>     ref=887031646
> 
> However, at some point in the process, they will turn 'random' and become
> garbage. I've been stuck on this issue for awhile, and I'd appreciate any
> advice.
> 
> -Pris

> _______________________________________________
> dev mailing list
> dev at openstreetmap.org
> http://lists.openstreetmap.org/listinfo/dev


-- 
Jochen Topf  jochen at remote.org  http://www.remote.org/jochen/  +49-721-388298