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matlab.io.fits.getHDUnum

Number of current HDU in FITS file

Syntax

N = getHDUnum(fptr)

Description

N = getHDUnum(fptr) returns the number of the current HDU in the FITS file. The primary array has HDU number 1.

This function corresponds to the fits_get_hdu_num (ffghdn) function in the CFITSIO library C API.

Examples

import matlab.io.*
fptr = fits.openFile('tst0012.fits');
n = fits.getHDUnum(fptr);
fits.closeFile(fptr);
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