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

188 CHAPTER 16. DATA STRUCTURE MANIPULATION
16.1.1 structure init
This function is used to initialise a data structure in memory. That is to say, it will create an
empty structure for you to fill with your own data. Due to differences in the nature of the data
structures each flavour of structure INIT are slightly different and so will be treated separately.
16.1.1.1 sscd init
To initialise a new SSCD in memory we can do the following.
CIA> sscd1 = sscd_init( ’143006010101’, ack=ok )
CIA> help, sscd1, ok
SSCD1 STRING = ’CSSC143006010101_96080512201019’
OK INT = 1
The first argument is the combined number that is used to
name the returned SSCD, sscd1 that is created by sscd init (see Section 15.2.1). A keyword
argument not used here is source, which can be used to pass an already existing SSCD to
sscd init so as to copy its parameters to sscd1.
16.1.1.2 scd init
This function initialises an SCD in memory. An example, using all the available options and
following from the example of Section 16.1.1.1, follows.
CIA> scd1 = scd_init( ’143006010101’, 10, ssid=sscd1, /ERD, deid=0, ack=ok )
CIA> help, scd1, ok
SCD1 STRING = ’CSCD143006010101_96080512231512’
OK INT = 1
The first argument is the combined number that is used to
name the returned SCD, scd1 that is created by scd init (see Section 15.2.1). The second
argument specifies the number of planes in scd1. The keyword ssid specifies the name of the
SSCD we have initialised in Section 16.1.1.1, and to which scd1 now belongs. If the keyword
ERD is set scd1 is an SCD of ERD flavour (see Section 15.2.2 otherwise it defaults to an SCD
of SPD flavour). The keyword deid is either 0 : LW detector, or 1 : SW detector, and defaults
to LW detector.
16.1.1.3 ssad init
To initialise a new SSAD in memory we can do the following.
CIA> ssad1 = ssad_init( ’143006010101’, ack=ok )
CIA> help , ssad1
SSAD1 STRING = ’CSSA143006010101_96080512201019’
OK INT = 1
The first argument is the combined number that is used to
name the returned SSAD, ssad1 that is created by ssad init (see Section 15.2.1). A keyword
argument not used here is old ssad, which can be used to pass an already existing SSAD to
ssad init so as to copy its parameters to ssad1.