I have been adding administrative boundaries (some suburban boundaries, Local Government Areas, State Forests and National Parks) using LPI NSW data, including areas along state and territory borders. The NSW boundaries as shown by LPI data are close but not exactly the same as existing boundaries already in OpenStreetMap. I have tried to leave existing boundaries largely unchanged but I have changed a small number of obvious discrepancies. I have just encountered NSW/ACT border and there are more discrepancies. I was going to leave existing boundary for ACT data and add a separate LPI-based boundary for NSW data. But, on reflection, that seems crazy.
As far as I can ascertain, existing boundaries were derived from Australian Electoral Commission (AEC) data which are approximations based on data from various sources, mainly the Australian Bureau of Statistics. The AEC itself appears to disclaim accuracy. As far as I am aware, there are no border disputes between NSW and adjacent jurisdictions so that I don't think there is any issue of political or jurisdictional sensitivity. In fact, I understand most boundaries have been ascertained by joint jurisdictional surveys etc. In the circumstances I think the LPI NSW data is more certainly accurate than AEC data and I would like to adjust the relevant boundaries in OSM (mostly only very small adjustments but many of them) to reflect the LPI NSW Base Map. And I will start with the NSW/ACT border. Does anyone have a contrary view? If so, I would appreciate an explanation. _______________________________________________ Talk-au mailing list [email protected] https://lists.openstreetmap.org/listinfo/talk-au

