I am trying to convert an OpenStreetMap file into a shapefile, but I am having problems with the "tags" field being cut-off after 80 characters. With QGIS 1.4, I use the OpenStreetMap plugin to 'Load OSM from file'. The file loads in QGIS. If I right-click on the 'lines' layer and select 'Save as shapefile', I end up with a shapefile but one that has an 80 char limit on "tags". How can I increase this 80 character limit?
You can also import the data into a PostgreSQL/Postgis database and you will not have that limit. Use the osm2pgsql utility
Unless you have a specific need to use the shapefile format, Spatialite is a good option: its built-in to QGIS, has no limits on the length of fields and is supported by most of the open source tools.