Analysis of attribute errors in the Victorian soil salinity GIS database 2007
The Victorian soil salinity monitoring project, funded by the Department of Sustainability and Environment (external link) provides support for standardised collection of data showing the extent and severity of soil salinity. This project also manages the storage of the data in the Corporate Data Stores and distributes information products back to the community. The current soil salinity layer collates all available recorded soil salinity mapping in Victoria.
This report summarises a review and analysis of the data asset conducted to identify and understand attribute errors within the data so that its management, condition and use can be improved.
Attribute errors were assessed in the ArcGIS environment using a combination of statistical analysis and error trapping techniques. Intelligence associated with the original surveys was used to guide these approaches. Analysis of spatial error of mapped polygons was excluded from the review because of the inability to validate historical data with contemporary surveys due to the potential for the site extents to change over time (a result of changes in land management and climate). Consequently error analysis focused on validating site attribution.
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This document was last reviewed on 02/09/2009