access access accessFirst accessPrimary appendExt assignBintableExt assignBintableExt assignImageExt hduCount initBintableExt initImageExt initRecordExt m_hdus MefFile operator[] primary primaryIndex readHduNames readHduNamesVersions select ~MefFile

access() [1/2] template<class T = Hdu> const T& Euclid::Fits::MefFile::access ( long  index ) Access the HDU at given 0-based index. Template Parameters T The type of HDU: ImageHdu, BintableHdu, or Hdu to just handle metadata. Returns A reference to the HDU reader-writer. The type can be ImageHdu, BintableHdu or unspecified (i.e. base class Hdu, the metadata reader-writer.). In the latter case, if needs be, the returned HDU can still be cast to an ImageHdu or BintableHdu: const auto &ext = f.access<>(1); ext.as<ImageHdu>().readRaster<float>(); See also operator[]