DataClassesSpatial - AtlasOfLivingAustralia/ala-datamob Wiki

Introduction

2013/14 - i rescued this from the old sites portal, which is behind a closed door - maybe one day i'll revise it to read a little easier

Fundamentals of geospatial coordinates and datums

ALAhandlingspatiallocationdata.pdf

Regarding quality of coordinate locations

DataClassesCoordinateQuality

Regarding coordinate conversions

DataClassesCoordinateConversion#Conversion

Regarding spatial generalisation (location blurring / obfuscation)

DataClassesCoordinateConversion#Obfuscation

"Spatial Data" distinction

In the context of the Atlas there appear to be many forms of spatial data. Generally speaking, the notion relates a fact to a point in space. The fact may be one of a number of concepts that surface (i.e. appear, or are made accessible) in various sub-systems:

Context Fact type Notes
Occurrence point-location specimen/species observation see darwincore terms dwc.decimalLatitude, dwc.decimalLongitude and associated metadata; also, review DataClassesCoordinateQuality