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In QSpatial the date published is the date when the data was last revised and managed by the data publisher. In the Open Data portal the last updated date reflects the date the record was last refreshed from QSpatial. We are working on an enhancement in 2022 to make this consistent across both platforms.
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Data accuracy
How do I find the accuracy of data
In the metadata Statement you will find under Data Quality, the Positional accuracy and Attribute accuracy statements if provided. You can also determine accuracy by reviewing the History > lineage statement as it can contain information related to accuracy.
What is the accuracy of the Digital Cadastral
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data
The point of truth for property boundaries is the survey plan. The digital cadastral database (DCDB), which is the basis for the data you are seeing, is only a graphical representation of these boundaries. You can purchase a copy of a survey plan through the Titles Qld online title and image searches page. The DCDB was originally captured by digitising the department’s cadastral maps. Positional accuracy of the DCDB was derived from the source map scale and the precision of the digitising. This positional accuracy initially varied throughout Queensland from +/-1 metre to +/-250 metres. This has been gradually improved so that the worst positional accuracy in Qld is currently +/-63 metres. More information is available via our page: Accuracy of the digital cadastral database.
Details about accuracies and other attributes can also be found in the Queensland Digital Cadastral Database data dictionary (QIF).
Accuracy
The quality statement if provided, is published at the bottom of the metadata and includes the completeness, consistency, positional accuracy and the attribute accuracy. It also includes the lineage statement and process steps.
Cadastral data is considered to be the data set is the point of truth for the graphical representation of property boundaries. It was created back in 1982 by digitising existing cadastral maps at a variety of scales and accuracies and in the case of Brisbane, this was 1:2500 mapping to which a generic positional accuracy of +/- 1.5m was assigned to the data. In some cases, the data is better than this, and in some cases worse than this. The department has been progressively upgrading data over Queensland to improve the position accuracy, so that the worst positional accuracy in Qld is currently +/-63 metres out west. You can find the parcel boundary accuracy statement in the land parcel attributes within the data.
More information is available via our page: Accuracy of the digital cadastral database.
Details about accuracies and other attributes can also be found in the Queensland Digital Cadastral Database data dictionary (QIF).
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How to contact the publisher
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