Australian Bureau of Statistics (ABS) provide census information for all Australia. However, ABS has its own division of a state/suburb/town called Statistical Areas Level 1-4 (SA), which is different from the usual government defined suburb-like divisions. ABS also provides ESRI shapefiles for its SA1 divisions.
Problem at hand is that I have number of addresses and I used google maps to find Lat/Longs for them. Now I want to find out in R-Language as in which SA1 division each address belongs to?
I am following the approach mentioned at this Bear-in-Park problem page. Main question that I am struggling with is that I believe Google map's lat/long are in different CRS than ABS ones. I don't know which CRS system Google map uses but some information about ABS shapefile is as follows,
"+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs"
So how to assign a CRS to Google-Map downloaded Lat/Longs and then how to transform them in same CRS as ABS and then how to determine which address goes to which sa1?