From iaufwg-request Wed Oct 6 05:56:59 1993 X-VM-VHeader: ("From:" "Sender:" "Resent-From" "To:" "Apparently-To:" "Cc:" "Subject:" "Date:" "Resent-Date:") nil X-VM-Bookmark: 2 Status: RO X-VM-v5-Data: ([nil nil nil nil nil nil nil nil nil] [nil nil nil nil nil nil nil nil nil nil nil nil "^From:" nil nil nil]) Received: by fits.cv.nrao.edu (4.1/DDN-DLB/1.5) id AA04401; Wed, 6 Oct 93 05:56:59 EDT Return-Path: Message-Id: <9310060956.AA11507@ns2.hq.eso.org> From: pgrosbol@eso.org Sender: iaufwg-request@fits.CV.NRAO.EDU To: iaufwg@fits.CV.NRAO.EDU Cc: pence@tetra.gsfc.nasa.gov Subject: Result of vote on voting procedures Date: Wed, 06 Oct 93 10:56:52 +0100 Dear IAU-FWG members, Thank you for your votes on the voting procedures and the acceptance of W.Pence as voting member. The results is: 1) Voting procedure: 14 Yes, 0 No of 15 members, 2) Membership of WP: 14 Yes, 0 No of 15 members. The only member I have been unable to contact and get a response from is Dr. A.E.Piskunov from Moscow. With Fowler's definition of unanimous, I will consider Dr. Piskunov not present and therefore declare both proposals accepted. Best regards, Preben Grosbol Chairman, IAU FITS WG cc: W.Pence, NASA From iaufwg-request Wed Oct 13 11:23:34 1993 Status: RO X-VM-v5-Data: ([nil nil nil nil nil nil nil nil nil] [nil nil nil nil nil nil nil nil nil nil nil nil "^From:" nil nil nil]) Received: by fits.cv.nrao.edu (4.1/DDN-DLB/1.5) id AA23969; Wed, 13 Oct 93 11:23:34 EDT Return-Path: Message-Id: <9310131523.AA06075@ns2.hq.eso.org> From: pgrosbol@eso.org Sender: iaufwg-request@fits.CV.NRAO.EDU To: iaufwg@fits.CV.NRAO.EDU Subject: Result of vote and test of proposals Date: Wed, 13 Oct 93 16:23:21 +0100 Dear IAU-FWG members, I am very pleased to note that the link to Moscow is working again and that A.Piskunov has expressed his support of the voting procedures and the membership of W.Pence. Thus, it is a truely unanimous vote. Since we now have a set of voting procedures, we can come down to the real facts, namely the three FITS proposals. I would like to split the discussion into three points: 1) test and verification of the proposed extersions including exchange of actual data, 2) check of the wording in the proposals to ensure maximum of clarity and avoid ambiguity, and 3) consider if the NOST document can be used as a definition of the FITS standard. To start with the first issue, I would like to hear for any of you willing to participate in the exchange test. The BINTABLE and IMAGE extensions can be verified by exchange of data files through anonymous ftp. I will ready a set of test files on our ftp account and announce it but it should be true exchange so post your sample files too. Unfortunately, the blocking proposal cannot be verified through networks. The main issue there is fixed blocked formats with a block length different from 2880 bytes. The main group of devices are QIC which like n*512 bytes. I can write the test files on e.g. QIC-24 tapes as send them but I need volunteers who willing to receive such tapes and send some of theirs. Best regards, Preben Grosbol Chairman, IAU FITS WG From iaufwg-request Tue Oct 19 08:33:52 1993 Status: O X-VM-v5-Data: ([nil t nil nil nil nil nil nil nil] ["1857" "Tue" "19" "October" "93" "13:33:46" "+0100" "pgrosbol@eso.org" "pgrosbol@eso.org" nil "41" "Testing of BINTABLE and IMAGE extensions" nil nil nil "10"]) Received: by fits.cv.nrao.edu (4.1/DDN-DLB/1.5) id AA07960; Tue, 19 Oct 93 08:33:52 EDT Return-Path: Message-Id: <9310191233.AA11139@ns2.hq.eso.org> To: iaufwg@fits.CV.NRAO.EDU Subject: Testing of BINTABLE and IMAGE extensions Date: Tue, 19 Oct 93 13:33:46 +0100 From: pgrosbol@eso.org Sender: iaufwg-request@fits.CV.NRAO.EDU Dear IAU-FWG members, To encourage you to participate in the test/verification of data exchange using the BINTABLE and IMAGE extensions, I have placed some test files on our anonymous ftp account here in ESO (Thank you to those of you who already have volunteered). The files can be obtained on the anonymous ftp account on 'ftphost.hq.eso.org' with IP 134.171.8.4. You should go to the subdirectory incoming/fitstest which you can do a 'ls -l' of. There is also a README file as follows: File Remarks --------------------------------------------------------------------- tst0001.mt Simple 8-bit integer ramp tst0002.mt Simple 16-bit integer file with 3 axes tst0003.mt Simple 32-bit integer file tst0004.mt Simple 32-bit integer file with scaling tst0005.mt Simple 32-bit IEEE Floating Point file tst0006.mt Simple 64-bit IEEE Floating Point file tst0007.mt Test file with 32-bit IEEE Fp special values tst0008.mt Test file with 64-bit IEEE Fp special values tst0009.mt ASCII Table extension + IMAGE extension tst0010.mt BINary Table extension + IMAGE extension tst0011.mt IMAGE extension + ASCII Table extension tst0012.mt Simple 32-bit IEEE + BINTABLE + UNKNOWN + IMAGE + TABLE tst0013.mt Image file with ESO HIERARCH keywords tst0014.mt Sample of ESO-MIDAS BINTABLE extension You are welcome to try all the files (tst0007 and tst0008 are a lot of fun!) but for verification you should read the files tst0009-tst0012 and tst0014. In a few days I will post the values of some explicit table/image elements so that we can see if we agree on the values. Should I have made some mistake in the file headers please e-mail me as soon as possible. It would be very good if some of you would also place you BINTABLE/IMAGE extension files on anonymous ftp accounts and announce them free for tests! Best regards, Preben From iaufwg-request Fri Oct 22 17:22:44 1993 Received: by fits.cv.nrao.edu (4.1/DDN-DLB/1.5) id AA17356; Fri, 22 Oct 93 17:22:44 EDT Return-Path: Date: Fri, 22 Oct 93 17:22:29 EDT From: pence@tetra.gsfc.nasa.gov (William Pence) Message-Id: <9310222122.AA26721@tetra.gsfc.nasa.gov> To: iaufwg@fits.CV.NRAO.EDU Subject: Re: Testing of BINTABLE and IMAGE extensions Cc: pence@tetra.gsfc.nasa.gov Sender: iaufwg-request@fits.CV.NRAO.EDU Dear IAU-FWG members, I have examined the test FITS files recently provided by Preben Grosbol and have produced ASCII listing of the file contents using our FTOOLS package. My tests were performed on a SUN SPARCstation IPC. In principle I can run the same software on a VAX or an Ultrix DECstation, but have not attempted this due to a lack of time. The file listings for test files 9-12 and 14 are available for others to compare and are located in the anonymous ftp account on tetra.gsfc.nasa.gov (128.183.8.77) in the /pub/test subdirectory. A few comments about these test files: 1. I could not easily display the scaled values for column 3 of the ASCII tables (in test files 9 and 11), therefore I just give the unscaled values in the listings. 2. In the IMAGE extentions, I only display the first 12 columns of the first plane of the data cube, to reduce the size of the file listing. 3. There appears to be a slight problem in the BINTABLE extentions of test files 10 and 12 in that the TFORM keyword for column 10 is: TFORM10 = 'PI(13) ' / Max. length is 13 16-bit values but there are in fact many more than 13 elements in many of the rows of the table (according to my software). From my interpretation of the BINTABLE definition document, this is not allowed. But in any case, my software ignores the MAXLEN value given in the TFORM keyword and returns the actual number of elements defined for each row. 4. My software is not currently capable of handling the UNKNOWN special records following the BINTABLE in test file no. 12. It treats any unrecognized bytes following a valid extension as an end-of-file indicator. This is done because on VAX/VMS systems one often gets some padding bytes at the end of a FITS file if the file does not have an intrinsic 2880-byte block size (512-byte blocked FITS files are quite common). 5. I've provided 2 listings for the test file number 14. The file tst0014a.lis displays the raw data values in the table, at full numeric precision, whereas the tst0014b.lis file displays each column using the display format specified by the TDISPn keyword. Regards, Bill Pence From iaufwg-request Mon Oct 25 10:18:01 1993 Received: by fits.cv.nrao.edu (4.1/DDN-DLB/1.5) id AA23896; Mon, 25 Oct 93 10:18:01 EDT Return-Path: Message-Id: <9310251417.AA02716@ns2.hq.eso.org> To: iaufwg@fits.CV.NRAO.EDU Subject: Re: Testing of BINTABLE and IMAGE extensions In-Reply-To: Your message of "Fri, 22 Oct 93 17:22:29 EDT." <9310222122.AA26721@tetra.gsfc.nasa.gov> Date: Mon, 25 Oct 93 15:17:42 +0100 From: pgrosbol@eso.org Sender: iaufwg-request@fits.CV.NRAO.EDU Dear IAU-FWG members, I am very pleased to that W.Pence has started the test/verification of the extension and hope that others will join soon. The data values in the listings I can in general confirm with the following comments: 1) The listing of of the ASCII table in tst0009.mt gives the ASCII contence of the columns, not the user values after applying format and scaling eg. in column 2, 4 and 5. 2) I rechecked the BINTABLE extension which was written by hand. Actually, I had swapped the length and offset in column 10 'PI(13)'. The error is now corrected and the new files placed on the ftp account. 3) The UNKNONW extension in file tst0012.mt should conform the the general rules. It has a nice FITS header: XTENSION= 'XZQ-EXTN' / Non-standard extension BITPIX = 8 / Data are in bytes NAXIS = 13 / A total of 13 axes !!! NAXIS1 = 17 / Pixels in this axis NAXIS2 = 41 / Pixels in this axis NAXIS3 = 1 / Pixels in this axis NAXIS4 = 1 / Pixels in this axis NAXIS5 = 1 / Pixels in this axis NAXIS6 = 1 / Pixels in this axis NAXIS7 = 1 / Pixels in this axis NAXIS8 = 1 / Pixels in this axis NAXIS9 = 1 / Pixels in this axis NAXIS10 = 1 / Pixels in this axis NAXIS11 = 1 / Pixels in this axis NAXIS12 = 1 / Pixels in this axis NAXIS13 = 2 / Pixels in this axis PCOUNT = 553 / Parameter values per group GCOUNT = 3 / No. of groups ... END It is given to check if readers can skip unknown extension and decode the ones after it. A reader should normally check it the string 'XTENSION' is present after an extension. Although it is not a part of the BINTABLE proposal we may have to discuss the wording in App. B on the P-format. The action when length or pointer is off limits should be specified. Best regards Preben PS: Any one who want a QIC tape for an exchange test? From iaufwg-request Mon Oct 25 17:22:49 1993 Received: by fits.cv.nrao.edu (4.1/DDN-DLB/1.5) id AA25101; Mon, 25 Oct 93 17:22:49 EDT Return-Path: Date: Mon, 25 Oct 93 17:22:43 EDT From: pence@tetra.gsfc.nasa.gov (William Pence) Message-Id: <9310252122.AA00814@tetra.gsfc.nasa.gov> To: iaufwg@fits.CV.NRAO.EDU Subject: Re: Testing of BINTABLE and IMAGE extensions Cc: pence@tetra.gsfc.nasa.gov Sender: iaufwg-request@fits.CV.NRAO.EDU Dear IAU-FWG members, I've looked at the new FITS test files produced by Preben Grosbol (with the revised BINTABLE extensions) and have placed new ASCII listings of the 2 affected files (tst0010 and tst0012) in my anonymous ftp directory on tetra.gsfc.nasa.gov in the /pub/test/ subdirectory. The number of elements in each variable length row now is in agreement with the maximumn number given in the TFORM keyword. Regarding the wording of the Append. B on the P-format, I'd suggest that the MAXLEN value given in the TFORM keyword should be the maximumn number of elements in each row that FITS readers are expected to be able to read. If there are more pixel elements than this in a given row, then readers may ignore the additional elements. But the additional elements are still valid data for FITS readers that are capable of reading them. Regards, Bill Pence