CCfits - HEASARC - NASA

24.37 CCfits::ImageExt< T > Class Template Reference 122
return the image data
• virtual void readData (bool readFlag=false, const std::vector< String > &keys=std-
::vector< String >())
read Image extension HDU data
• virtual void scale (double value)
set the BSCALE keyword value for images (see warning for images of int type)
• virtual double scale () const
return the BSCALE keyword value
• virtual void zero (double value)
set the BZERO keyword value for images (see warning for images of int type)
• virtual double zero () const
return the BZERO keyword value
24.37.1 Detailed Description
templateclass CCfits::ImageExt< T >
ImageExt is a subclass of ExtHDU that contains image data of type T.
24.37.2 Member Function Documentation
24.37.2.1 template void CCfits::ImageExt< T >::readData ( bool readFlag
= false, const std::vector< String > & keys = std::vector()
) [virtual]
read Image extension HDU data
Called by FITS ctor, not intended for general use. parameters control how much gets
read on initialization.
Parameters
readFlag read the image data if true
key a vector of strings of keyword names to be read from the HDU
Implements CCfits::ExtHDU.
24.37.2.2 template void CCfits::ImageExt< T >::scale ( double value )
[virtual]
set the BSCALE keyword value for images (see warning for images of int type)
For primary HDUs and image extensions, this will add (or update) the BSCALE keyword
in the header. The new setting will affect future image array read/writes as de-
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