CCfits - HEASARC - NASA

24.41 CCfits::Table::NoSuchColumn Class Reference 139
• NoSuchColumn (int index, bool silent=true)
Exception ctor for exception thrown if the requested column (specified by name) is not
present.
24.41.1 Detailed Description
Exception to be thrown on a failure to retrieve a column specified either by name or
index number.
When a Table object is created, the header is read and a column object created for each
column defined. Thus id this exception is thrown the column requested does not exist
in the HDU (note that the column can easily exist and not contain any data since the
user controls whether the column will be read when the FITS object is instantiated).
It is expected that the index number calls will be primarily internal. The underlying
implementation makes lookup by name more efficient.
The exception has two variants, which take either an integer or a string as parameter.
These are used according to the accessor that threw them, either by name or index.
24.41.2 Constructor & Destructor Documentation
24.41.2.1 CCfits::Table::NoSuchColumn::NoSuchColumn ( const String & name, bool silent =
true )
Exception ctor for exception thrown if the requested column (specified by name) is not
present.
Message: Fits Error: cannot find Column named: name is printed.
Parameters
name the requested column name
silent if true, print message whether FITS::verboseMode is set or not.
24.41.2.2 CCfits::Table::NoSuchColumn::NoSuchColumn ( int index, bool silent = true )
Exception ctor for exception thrown if the requested column (specified by name) is not
present.
Message: Fits Error: column not present - Column number index is printed.
Parameters
index the requested column number
silent if true, print message whether FITS::verboseMode is set or not.
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