Date: Mon, 16 Oct 2000 12:17:33 -0700 (PDT) From: Michael Scharber To: IGS Mailing List cc: SCIGN Mail Subject: [SCIGN-849] Hatanaka RINEX Conversion Message-ID: Sender: owner-scign Precedence: bulk ****************************************************************************** SCIGN Electronic Mail 16 Oct 12:18:44 PDT 2000 Message Number 849 ****************************************************************************** Author: Michael Scharber For a variety of reasons SOPAC has chosen to adopt the Hatanaka, or compressed RINEX, file compression strategy for ALL of its RINEX Observation files. Over the coming months SOPAC will be converting all of its older RINEX Observation files from standard unix-compressed ASCII files to Hatanaka-unix-compressed ASCII files. This conversion process will ensue on a year-by-year (data-wise) basis, beginning with 1998 RINEX files on the SOPAC archive and progressing to other years once 1998 is finished. Also, in the near future SOPAC will begin providing both standard unix-compressed and Hatanaka-unix-compressed versions of "current" RINEX Observation files on a daily basis...with a lag period of a few months before removing the standard unix-compressed copies. Over the course of the next year the lag will be shortened to a smaller and smaller amount of time, ultimately ending in the cessation of standard unix-compressed RINEX Observation files from SOPAC's public archive. In order to help make this transition as painless for our users as possible we will be posting notice messages in the major directories of SOPAC's archive corresponding to the Hatanaka conversion process and will be maintaining a status page on our web site outlining our conversion schedule and current projects. SOPAC is aware that the adoption of the Hatanaka compression scheme for RINEX Observation file serving and sharing (at SOPAC) has been a long time coming. We apologize for significant delay and hope that our transition is as pain-free as possible, both for SOPAC and it's users. Please send questions or concerns to archive@josh.ucsd.edu. Best Regards, Michael ******************************************************* Michael Scharber Scripps Institution of Oceanography Institute of Geophysics and Planetary Physics 8785 Biological Grade IGPP Room 4212 La Jolla, CA 92037 mscharber@josh.ucsd.edu (858)534-7692 *******************************************************