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

14 CHAPTER 2. ABOUT CIA
This will probably be a link. You can use the ls -l commandtoseewhatitispointingto
if you wish, though it is not particularly important. Inspect this file to see what cia vers is
defined as. Alternatively, this information will probably be printed when CIA is started. Now
you can copy the file $cia vers/unix/user init.pro. In order for CIA to find it you should
put it in your $HOME/bin directory.
To change the default version you can either copy and modify the cia file or alias cia to
include the version, though remember you can also specify it on the command line.
By default, no log files are written. You can turn on the logging by reinstating the
commented-out line set logfile in user init.pro. Then they are written to the directory
specified by the environment variable logfile dir which in turn is set to the environment variable
cia logfile dir. These variables are set in, respectively, cia and setup/cshrc.camia
if it exists. If it does exist and sets cia logfile dir, you will need your own version of cia to
change the logfile directory, otherwise you can simply define cia logfile dir yourself.
2.4 CIA caveats
Some points to note about IDL and CIA:
• Do to a bug concerning nesting structure in IDL 5.5 CIA will not run under IDL 5.5
• You have to include the “obsolete” directory in the IDL PATH in order to run pickfile
and CIA routines using this program.
• CIA should only be run in a directory where the user has write permission.
• Run only one CIA session per directory. Some CIA routines create temporary files in the
current directory. Running more than one CIA session in the same directory can cause a
file I/O conflict.
• xv raster might crash for some North-oriented rasters. It is recommended that you use
ximage instead.
• ximage will crash if you use it together with ciainfo or widget olh.
• Using mosaics, fit isopsf and photom psf will crash for point-sources close to the edge
of the mosaic
• corr flat will fail to flat correct a PDS that contains data with an optical configuration
that is not constant.
• There has been reports from users that MIDAS has problems reading CIA generated FITS
files. It appears that MIDAS does not implement the full FITS standard, and therefore
can not read CIA astrometry.
• There is a known problem with the CIA routine sscd del. Deleting an SSCD may corrupt
those SSCDs which have been derived or extracted from the original. For example:
CIA> spdtoscd, ’cisp02600506.fits’, sscd, dir=’$cia_vers/test’, /nowrite
CIA> cleaned_sscd=sscd_clean(sscd)
CIA> sscd_del, sscd