Magellan Altimetric and Radiometric Global Data Record (GxDR) Archive Bundle

Overview
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This PDS4 archive bundle contains Magellan GxDR products updated from the PDS
dataset on CD-ROM that was generated by the Magellan project in the 1990's. The
'x' in the GxDR name is a placeholder that allows GxDR to stand for each of four
map types: Global Topography Data Record (GTDR), Global Emissivity Data Record
(GEDR), Global Slope Data Record (GSDR), and Global Reflectivity Data Record
(GREDR). Note the GTDR maps contain planetary radius values. Each GxDR data type
is projected in sinusoidal, Mercator, and polar stereographic (both North and
South poles) map projections.

The updated archive is based on the PDS3 volume mg_3002. The GxDRs have been
reformatted into single-image products from the original tiled products. The new
PDS4 bundle also has constrast-enhanced and easier to display browse products,
along with improved metadata in the PDS4 labels.

This bundle contains the following collections.

Browse - JPEG versions of GxDR images

Data - PDS4 versions of the maps

Document - a set of documents related to the GxDR dataset, including a user guide

Miscellaneous - a catalog of information about the GxDR products

Data Products and PDS4 Labels
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Every GxDR data product is accompanied by a PDS label in a file with the same
name as the data file, but with the extension ".xml". These PDS4 labels are written
in XML (Extended Markup Language). The labels may be viewed in a text editor or
web browser, preferably one that applies special formatting to XML files to make
them more readable. The labels may also be read by software that can interpret
XML.

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This bundle was created and archived by the Geosciences Node of the Planetary
Data System. Questions about this bundle may be directed to
geosci@wunder.wustl.edu.

Last updated 2023-08-18.