renames an existing variable in a Common Data Format file.
Id, OldVariable, NewName
The CDF ID, returned from a previous call to CDF_OPEN or CDF_CREATE.
A string containing the current name of the variable
the variable number to be renamed.
A string containing the new name for the variable.
is a variable ID (as opposed to a variable name) and the variable is a zVariable, set this flag to indicate that the variable ID is a zVariable ID. The default is to assume that
is an rVariable ID.