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Hi Geoff,

On 28.11.2013 08:57, Geoff Leyland wrote:
As it happens the other OSM format - PBF is based on protocol buffers and there’s a Lua protocol buffer implementation available.  However, as far as I can tell, the format is not as simple as loading the .proto and hitting go.

Very good tool/platform for analyzing XML volumes in general is BaseX (clever visualizations, xpath/xquery, FTS)

http://basex.org/products/download/all-downloads/

wget http://files.basex.org/releases/7.7.2/BaseX772.jar
java -jar BaseX772.jar

BTW, at the Lua Workshop2013, eXtraWay has been present, which possibly is something in the same vein, but I not have tried it yet
http://www.lua.org/wshop13.html#Capoccia
http://switch.dl.sourceforge.net/project/extraway/eXtraWay%20OpenPlatform/1.0/

Spatialite (impresive set if libraries organized as SQLite extensions) seems to have support for your format:
https://www.gaia-gis.it/fossil/spatialite-tools/wiki?name=OSM+tools

I think, all spatialite functionality is exposed in the GUI:
https://www.gaia-gis.it/fossil/spatialite_gui/index
https://www.gaia-gis.it/gaia-sins/index.html

Kind Regards,
Alek