Syntax Extensions

This section deals with options that are not required during routine pipeline processing, but which will be available in the delivered software. These extensions will allow creation of csds compliant cdf files for data products that are not included in the csds distribution, as well as missions other than Cluster.

Time Offset

This will take the form:
T yyyy mm dd
The optional time offset is given by the three space separated integers, yyyy mm dd which specify respectively the year (full four digit, e.g. 1999), month and day to be used as start day for time measurement. Times in records will then be taken as milliseconds from the start of this specified offset day. This overrides the use of the start of the day determined from the file name. It is only needed for non-Cluster data sets.

Data Periodicity

This will take the form:
S period
where period is a real value specifying the expected time interval between records in milliseconds. This overrides the Cluster SP and PP defaults determined from the file name. It is only needed for non-Cluster data sets. It is needed to correctly specify the Half_interval variable and Data_intervals attribute.

Variable Names

This will take the form:
I "text"
where "text" is a quoted string giving the extension to be used for the Half_interval variable and the attributes to the Epoch variable, and overrides that determined from the file name. Other variables take the full variable name from the skeleton file. It is only needed for non-Cluster data sets. A null string ``'' will result in no extension being added.

File Names

It is not possible to change the file name syntax as this is a crucial part of the Cluster pipeline error checking, and ensures complete compliance with CSDS standards. It is possible, however, to generate files with a different syntax by renaming them after processing, and using the above override optional inputs to control file name dependent inputs.