ISOCAM Interactive Analysis User's Manual Version 5.0 - ISO - ESA

218 CHAPTER 19. ADVANCED SLICING
19.6 Advanced slicing with x slicer
This section 1 completes the guide, begun in Section 12.3, to x slicer.
This section addresses all possibilities that are allowed by x slicer. They have been classified
by the order of appearance of the windows in which they occur.
19.6.1 Files, directories and x slicer customization
19.6.1.1 Where are the data
By default, x slicer will search some directories for the data. It uses three variables to do
so. When you use the ‘Automatic Find’ to get all the files, these variables are used. They are
all defined at the beginning of the x slicer.pro routine (see Section 19.6.1.2 to customize these
settings). Here is how it goes for ERD:
• Start a pickfile (IDL program routine) in the default data directory.
• From this point, the user searches for ERD and selects it. Let us call the selected directory
user directory.
• x slicer looks for the IIPH file in the user directory.
• If needed, and if a CDS is not to be used, x slicer looks for the IFPG file in the userdirectory.
• If the IFPG file is not in the user directory, x slicer assumes that it is on the ISO CD-ROM
and looks for it in user directory/../OTHERS (assuming UNIX notations).
• x slicer looks for the CSTA file in the user directory.
• x slicer looks for the orbit file in the user directory/../OTHERS with the name OR-
BIT.FIT.
• If the orbit file is not found, x slicer looks for it in the default orbit directory under the
name default orbit file.
Unless you are working at the ISO data center at Saclay, the default data directory is set to
./ on the UNIX system and to arc dat on the VAX system. In UNIX, the search for the ERD
(or STore Data, or TDF) will therefore start from the directory where x slicer is invoked. On
the VAX/VMS system, the user can choose x slicer’s working directory by typing the following
command before entering the CIA session:
$ DEFINE ARC_DAT SAPI01$DKA200:[DELANEY.X_SLICER_DATA]
19.6.1.2 Customizing the default data directory.
By editing the x slicer code, you can customize the default data directory for all the people
working on a node. To do this, follow these steps:
• Run a CIA session on the machine where your data are.
• Enter the following commands:
1 Taken from Aussel H., 1996, ISOCAM Data Preparation with X slicer v2.1, Sections 3 & 4.