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matlab.io.fits.readKeyLongLong

Keyword as int64

Syntax

[value,comment] = readKeyLongLong(fptr,keyname)

Description

[value,comment] = readKeyLongLong(fptr,keyname) returns the specified key and comment. value is returned an int64 scalar value.

This function corresponds to the fits_read_key_lnglng (ffgkyjj) function in the CFITSIO library C API.

Examples

import matlab.io.*
fptr = fits.openFile('tst0012.fits');
n = fits.getNumHDUs(fptr);
for j = 1:n
    fits.movAbsHDU(fptr,j);
    [key,comment] = fits.readKeyLongLong(fptr,'NAXIS');
    fprintf('HDU %d:  NAXIS %d, "%s"\n', j, key, comment);
end
fits.closeFile(fptr);
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