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matlab.io.fits.deleteHDU

Delete current HDU in FITS file

Syntax

HDU_TYPE = deleteHDU(fptr)

Description

HDU_TYPE = deleteHDU(fptr) deletes the current HDU in the FITS file. Any following HDUs will be shifted forward in the file, filling the gap created by the deleted HDU. In the case of deleting the primary array (the first HDU in the file) then the current primary array will be replaced by a null primary array containing the minimum set of required keywords and no data. If there are more HDUs in the file following the HDU being deleted, then the current HDU will be redefined to point to the following HDU. If there are no following HDUs then the current HDU will be redefined to point to the previous HDU. HDU_TYPE returns the type of the new current HDU.

This function corresponds to the fits_delete_hdu (ffdhdu) function in the CFITSIO library C API.

Examples

Delete the second HDU in a FITS file.

import matlab.io.*
srcFile = fullfile(matlabroot,'toolbox','matlab','demos','tst0012.fits');
copyfile(srcFile,'myfile.fits');
fileattrib('myfile.fits','+w');
fitsdisp('myfile.fits','mode','min');
fptr = fits.openFile('myfile.fits','readwrite');
fits.movAbsHDU(fptr,2);
new_current_hdu = fits.deleteHDU(fptr);
fits.closeFile(fptr);
fitsdisp('myfile.fits','mode','min');

See Also

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