[OSM-dev] visible-Flag in PBF
brett at bretth.com
Mon May 9 11:52:41 BST 2011
On Sun, May 8, 2011 at 6:15 AM, Scott Crosby <scott at sacrosby.com> wrote:
> The problem is that osmosis doesn't have functionality to 'push'
> metadata through the pipeline. The pbf reader, as a consumer, has
> barely any metadata available to put in the file header. It has no
> idea if the data is sorted or not so can't set the flag. The solution
> is to improve the XML format so that bounds tags include a key-val
> dictionary, make osmosis propagate that metadata through its
> processing, and have the xml&pbf writers put that metadata into the
> OSMHeader blob or <bounds> XML tag. Existing osmosis filters need to
> be patched to properly set or reset the is-sorted flag. Then ask the
> people who do planet dumps to set the flag on the dbase dumps. (And,
> given we'll have a full key-val dictionary, we can include other
> metadata like URL's for getting minute changesets, datestamps, and
> other goodies.)
The bound implementation in Osmosis is fairly limited. As you suggest, it'd
be great to see bound turned into something more generic (eg. header?) if
somebody has time to do it.
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