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2.3.9 Data Specification

     

Each variable in a CDF has a defined data specification. A variable's data specification consists of a data   type and a number   of elements of that data type. A variable's data specification is specified   when the variable is created. The data specification of an existing variable may also be changed   if either of the following conditions is true.

  1. Values have not yet been written to the variable (including an explicitly written pad value --- see Section 2.3.17).
  2. The old data type and new data type are considered equivalent,   and the number of elements for the variable are the same. Equivalent data types are described in Section 2.2.10.




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