CCfits - HEASARC - NASA

24.33 CCfits::HDU::InvalidExtensionType Class Reference 117
24.32.2.21 void CCfits::HDU::writeHistory ( const String & history =
"Generic History String" )
write a history string.
A default value for the string is given ("Generic History String") so users can put a
placeholder call to this function in their code.
24.32.2.22 void CCfits::HDU::zero ( double value ) [inline, virtual]
set the BZERO keyword value for images (see warning for images of int type)
For primary HDUs and image extensions, this will add (or update) the BZERO keyword
in the header. The new setting will affect future image array read/writes as described
in section 4.7 Data Scaling of the CFITSIO manual. For table extensions this function
does nothing.
WARNING: If the image contains integer-type data (as indicated by the bitpix() return
value), the new scale and zero value combination must not be such that the scaled
data would require a floating-point type (this uses the CFITSIO function fits_get_img-
_equivtype to make the determination). If this situation occurs, the function will throw
a FitsException.
Reimplemented in CCfits::PHDU, and CCfits::ImageExt< T >.
The documentation for this class was generated from the following files:
• HDU.h
• HDU.cxx
24.33 CCfits::HDU::InvalidExtensionType Class Reference
exception to be thrown if user requests extension type that can not be understood as
ImageExt, AsciiTable or BinTable.
#include
Inheritance diagram for CCfits::HDU::InvalidExtensionType:
CCfits::FitsException
CCfits::HDU::InvalidExtensionType
Public Member Functions
• InvalidExtensionType (const string &diag, bool silent=true)
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