CONSERVATION NOTE: Originally, the data base commenced with several identification and scanning information records written in ASCII; now these records are in EBCDIC. In addition, the unloaded database was changed from variable length to fixed length; each record was extended to a physical length of 120 columns.
Conservation note April 2015:
There are 22 datasets associated for G0000823. When these files were migrated from EBCDIC binary format to the ASCII encoding format in 2015, the files were totally restructured. In some files there were 3 120 byte ASCII records at the beginning of the file that contained metadata about each tree for a specific site. The following is an example for G0000823_DATA01:
HJ1TWST90213
THIS IS WH 47 W..
1 1 19 16 18 8 21 19 17 18 1679826956
These three records have been stripped off of each dataset and been saved independently from the tree ring data in the Converted Headers directory under PM1. All of the original data resides in the PM0 directory.
In addition, in the original files, there were two 120 byte data records for each year that is associated with a tree ring. When the files were converted, these two records were combined into one long record so the data could be used with spreadsheet applications such as Excel.
As an example, file G0000816_Data01 originally contained 419 records. The first three metadata records have been stripped from the file for a total 416 records. When the two records for each data set were concatenated into one record upon migration, the converted file now only contains 208 records. Each of these records is associated with a specific year.
The SAS runs used to convert the data are included as part of the metadata: G816_CONVERT_TEMPLATE.SAS is the code used for the files with 3 lines of 'header'. Also included is a set of SAS frequency tables in HTML form for the first file data set saved as 'SAS Output_htm823#IDX109'.
STATEMENT OF RESPONSIBILITY NOTE: Forintek was previously known as the Western Forest Products Laboratory (WPFL).
COLLECTOR/COLLECTEUR: Forintek Canada Corporation
RELATED PUBLICATIONS: An extensive list of publications is available in the documentation package.
Originator (Principal Investigator): Forintek Canada Corporation
