Keywords: mrtcal-user-manual

Next: Calibrating Up: Entry numbering and versioning Previous: Numbering Contents

### Versioning

The first time an IMB-FITS file is indexed, it is given a version number, starting at 1. Then, when it is calibrated, a new version of the entry is added in the index. For example, using the same example as before:

    MRTCAL> calibrate 1

    Calibrating   1.1 054-09   CONTROLD     30-SEP-2010  20:52:47.0 200 4MHZ  CALIBRATE   PSW NONE
    [calibration messages]

yields

    MRTCAL> mlist in
      N.V ProjId    Source         Date          UT     Scn Backe  ObsType    Swi Calibr
      1.1 054-09   CONTROLD     30-SEP-2010  20:52:47.0 200 4MHZ  CALIBRATE   PSW NONE
      1.2 054-09   CONTROLD     30-SEP-2010  20:52:47.0 200 4MHZ  CALIBRATE   PSW DONE E0HLI:254 E0VLI:198
      2.1 054-09   CONTROLD     30-SEP-2010  20:52:47.0 200 WILMA CALIBRATE   PSW NONE
      3.1 054-09   CONTROLD     30-SEP-2010  20:52:47.0 200 FTS   CALIBRATE   PSW NONE
      4.1 054-09   CONTROLD     30-SEP-2010  20:53:37.0 201 4MHZ  TRACKED     PSW NONE
      5.1 054-09   CONTROLD     30-SEP-2010  20:53:37.0 201 WILMA TRACKED     PSW NONE
      6.1 054-09   CONTROLD     30-SEP-2010  20:53:37.0 201 FTS   TRACKED     PSW NONE

One can see that a new entry, numbered 1.2, has been added to the input index. It is identical to the version 1.1, except that its calibration status is now `DONE` (and the calibration results are saved in the index file). The version 1.2 was inserted just after the version 1.1 so that the correct sorting is kept.

Beware that, when a new entry is added to the input index, the current index is NOT udpated. One has to call `MFIND` again. Note that `MFIND` finds only the latest versions of each entry:

    MRTCAL> mfind /backend 4mhz
    I-FIND,  2 entries in Current indeX
    MRTCAL> mlist
      N.V ProjId    Source         Date          UT     Scn Backe  ObsType    Swi Calibr
      1.2 054-09   CONTROLD     30-SEP-2010  20:52:47.0 200 4MHZ  CALIBRATE   PSW DONE E0HLI:254 E0VLI:198
      4.1 054-09   CONTROLD     30-SEP-2010  20:53:37.0 201 4MHZ  TRACKED     PSW NONE

Consider also that an entry can be calibrated several times, e.g. to test the effect of a modified calibration tuning. Each of these calibrations will increase the version number, producing a new entry in the index, memorizing its calibration results.

Next: Calibrating Up: Entry numbering and versioning Previous: Numbering Contents