NJPL1I00PDS100000000 = SFDU_LABEL RECORD_TYPE = STREAM OBJECT = TEXT NOTE = "Notes on using the image index table." END_OBJECT END NOTES ON USING THE IMAGE INDEX TABLE The image index table contains one row (record) for each image file on the Voyager Neptune CD-ROM disks. The table contains a total of 9840 rows, where rows 1 to 3048 identify the compressed images on volume VG_0009, rows 3049 to 6004 describe compressed images on volume VG_0010, rows 6005 to 9009 are the compressed images on VG_0011, and rows 9010 to 9840 identify the compressed images on VG_0012. The image index table is formatted so that it may be read directly into many data management systems on various host computers. All fields (columns) are separated by commas, and character fields are enclosed in quotes. Each record consists of 512 bytes, with a carriage return/line feed sequence in bytes 511 and 512. This allows the table to be treated as a fixed length record file on hosts which support this file type and as a normal text file on other hosts. The structure and content of the image index table are described in file VOLINFO.TXT located in the DOCUMENT directory. A label coded in the Object Description Language (ODL), providing a formal description of the index table structure, is located in file IMGINDEX.LBL. Users of most commercial data management systems should be able to use the list below to define the names and characteristics of each field and then to load the table into their data manager using a delimited ASCII text input format. If necessary the specific column start positions and lengths can be used to load the data. For personal computer users a DBASE III DBF structure is also provided in the file IMGINDEX.DBF. This file can be used to load the IMGINDEX.TAB file into DBASE III with the following commands: USE IMGINDEX APPEND FROM IMGINDEX.TAB DELIMITED Once the table is loaded into DBASE III, it can generally be automatically loaded into other data managers or spreadsheets which provide search and retrieval capabilities. The list below presents each field in the image index table, along with a 10 character terse name for each field, the full PDS data dictionary name, the data type which would normally be used for loading the field into a data management system, the field width and the number of decimal places in numeric fields. IMAGE INDEX FLAT TABLE CONTENTS Field Terse Name Full Name Type Start Width Dec ----- ----------- ------------------- ---------- ----- ----- --- 1 SCNAME SPACECRAFT_NAME Character 2 9 2 MSNPHSNM MISSION_PHASE_NAME Character 14 17 3 TARGETNAME TARGET_NAME Character 34 8 4 IMAGEID IMAGE_ID Character 45 10 5 IMAGENUM IMAGE_NUMBER Numeric 57 8 2 6 IMAGETIME IMAGE_TIME Character 67 20 7 EARTHRCDTM EARTH_RECEIVED_TIME Character 90 20 8 INSTRNAME INSTRUMENT_NAME Character 113 19 9 SCANMODEID SCAN_MODE_ID Character 135 7 10 SHTRMODEID SHUTTER_MODE_ID Character 145 7 11 GAINMODEID GAIN_MODE_ID Character 155 7 12 EDITMODEID EDIT_MODE_ID Character 165 7 13 FILTERNAME FILTER_NAME Character 175 7 14 FILTERNUM FILTER_NUMBER Numeric 184 4 15 EXPOSUREDU EXPOSURE_DURATION Numeric 189 7 4 16 NOTE NOTE Character 198 80 17 SMPLBITMSK SAMPLE_BIT_MASK Character 281 8 18 DATAANMTYP DATA_ANOMALY_TYPE Character 292 6 19 IMAGEVOLID IMAGE_VOLUME_ID Character 301 8 20 IMAGEFILNM IMAGE_FILE_NAME Character 312 31 21 BROWSVOLID BROWSE_VOLUME_ID Character 346 8 22 BROWSFILNM BROWSE_FILE_NAME Character 357 38