Some of you have expressed interest in "cracking" the data dictionary for the Queensland Wetlands mapping data. I've spent a few hours this weekend going through the web literature. Hopefully I can distill the main concepts in a useful manner.
Firstly, the Wetlands/Streams layer at http://data.australia.gov.au/97 is borked - there is no shapefile included in the ZIP archive, therefore no geography to use or translate! For the polygon area I have started a wiki page: http://wiki.openstreetmap.org/wiki/Data.australia.gov.au/Queensland/Wetlands If nothing else, I have listed the reference documents that should shed some light on what each column means. I've only started to write up the meanings myself. I'll keep on updating these as I have time. Also useful is a reference rendering, being the set of Qld EPA PDF maps available from http://www.epa.qld.gov.au/wetlandinfo/site/MappingFandD/WetlandMapsAndData/PDFMaps.html As part of the wiki page I'll also add in some recommended transliterations between the attributes in the original dataset, and a tagging scheme in OSM. The data seems to support the following OSM features quite faithfully: natural=wetland (duh - these are the Wetland Regional Ecosystems on the PDF maps) wetland=* (this can be mapped from the "RE" (Regional Ecosystem) type, e.g. a "wetre" attribute of "12.1.3" is basically equivalent to mangrove coverage) natural=water (these are the Water Bodies on the PDF maps. Larger reservoirs also seem to distinguish between full supply level and a typical level) natural=spring (the literature refers to a springs layer but this does not appear to be CC-BY yet) natural=coastline and maybe =beach (I can never remember if natural=coastline is supposed to mean high water or low water, doesn't matter, the wetlands dataset typically deliniates the intertidal area anyway) Good luck everyone, Brendan _______________________________________________ Talk-au mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-au
