Astrogeology Science Center

Lunar Product Derived from the LOLA archive of the PDS IMG Node
Lunar Product Derived from the LOLA archive of the PDS IMG Node

The PDS Cartography and Imaging Sciences Node (“Imaging” or IMG) Annex is a data portal designed to support the public delivery of NASA-funded geospatial data products derived from PDS image data. Examples of geospatial derived products are cartographic and thematic maps of moons and planets, local and regional geologic feature maps, topographic and perspective views of planetary landing sites, and tabular data containing feature or unit information derived from planetary data. Many of these products have been developed as a result of NASA data analysis programs, often years after active missions (and their accumulating archives) have ended. As of January 2017, the Annex is considered PDS-Equivalent by NASA as a long-term data repository.

The image data in the Annex are both PDS3 and PDS4 compliant, with the majority served as 16-bit raw GeoTIFF files with detached PDS3 and ISIS3 headers. In this format, these files are “parsable byte streams” (see Section 4.2.1, starting on text page 11 for a summary of PDS4-compliant data formats). Browse images in the Annex are typically served as JPEG (.jpg) files. PDS4-compliant versions of all Annex data are under development.

Note that the Cartography and Imaging Sciences Node is currently working on identifying a PDS4- Compliant data format that is suitable for archiving GIS-type data products (e.g., shapefiles, vector files, point arrays from a software package like ArcGIS). We are considering an implementation that involves the Geographic Markup Language (GML). More information on this can be found here). Please refer to this page for updates on the progress of this effort.

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