Ginga Specific Software: Program SHRINK
Program shrink reduces the size of HDS files. It does this
in two ways. Firstly some programs leave large amounts of unused space
in HDS files. This is particularly noticable for spectral (PHAD)
files. Shrink always reclaims this space. Secondly many files
have in addition to the science data large arrays of auxiliary or
housekeeping (HK) data; Ginga files are particularly
affected. Optionally shrink can delete some or all of these
arrays. Remember, however, that much of the Ginga data analysis
(e.g. background subtraction, attitude correction and cleaning)
uses this auxilairy information.
A Ginga CUBE, TIME series or PHAD file(s).
A "shrunk" Ginga CUBE, TIME series or PHAD
file(s).
Shrink requires a variable number of input parameters. The
QX parameter system is used to read these parameters.
| SHR_SPEC | Specification of the files
to be "shrunk" (including wild cards). |
|
| | SHR_EXT | The string to be added to
each input filename to construct the output filename(s). |
|
| | SHR_NHK | The number of auxiliary (HK)
data arrays to be copied. If set to -1 (the default) all data
is copied to the output file. If set to 0 all auxiliary data
arrays with more than 64 elements are deleted. If set to n
(where n is greater than zero) the user is prompted to specify
the n array names (see below). |
|
| | SHR_HKNAME(SHR_NHK) | The names of the
auxiliary (HK) data arrays to be kept (see above). |
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