CCSD3ZF0000100000001NJPL3IF0PDSX00000001 PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 80 OBJECT = TEXT PUBLICATION_DATE = 1994-08-01 NOTE = "MAGELLAN FMAP CUMULATIVE RELEASE NOTES" END_OBJECT = TEXT END COMMENTS ON MAGELLAN FMAP CD-ROMS 1. Purpose of This Document This document is a cumulative summary of comments concerning the Magellan FMAP data set published on CD-ROMs. It contains comments on all the FMAP CD-ROMs published to date. Comments include information of interest to users of the data and notes about any known errors on the CD-ROMs. 2. FMAP Validation Each FMAP product is checked for errors in format and content by a series of programs written at the USGS. In addition, all image files are visually inspected for corrupted data. The results from each volume validation follow. 3. FMAP Volume Validation Results 3.1 Comments on Volume MG_1164, Version 1 This is the first FMAP CD-ROM to be produced. The FMAP products were checked for science quality and no errors or anomalies are reported. Also, no errors are reported from checks using the PDS Label Verifier and Table Browser utilities. However, the files on this volume were not validated by the most recent version of the PDS Data Dictionary. 3.2 Comments on Volume MG_1179, Version 1 The MAP_RESOLUTION keyword value has been changed in the INDEX.TAB, CUMINDEX.TAB, and image labels. Instead of it being an integer value, it is now a real value with four decimal place accuracy. This was done to satisfy the following relationship: (2 * pi * radius / MAP_SCALE)/360 = MAP_RESOLUTION The MAP_RESOLUTION keyword value for volumes MG_1134, MG_1149, MG_1150 MG_1164, and MG_1165 is in error and must be corrected before using.