Read image data
imgdata = readImg(fptr)
imgdata = readImg(fptr,fpixel,lpixel)
imgdata = readImg(fptr,fpixel,lpixel,inc)
imgdata = readImg(fptr) reads the entire
current image. The number of rows in imgdata will
correspond to the value of the NAXIS2 keyword, while the number of
columns will correspond to the value of the NAXIS1 keyword. Any further
dimensions of imgdata will correspond to NAXIS3,
NAXIS4, and so on.
imgdata = readImg(fptr,fpixel,lpixel) reads
the subimage defined by pixel coordinates fpixel and lpixel.
The fpixel argument is the coordinate of the first
pixel and lpixel is the coordinate of the last
pixel. fpixel and lpixel are
one-based.
imgdata = readImg(fptr,fpixel,lpixel,inc) reads
the subimage defined by fpixel, lpixel,
and inc. The inc argument denotes
the inter- element spacing along each extent.
This function corresponds to the fits_read_subset (ffgsv) function
in the CFITSIO library C API.
Read an entire image.
import matlab.io.* fptr = fits.openFile('tst0012.fits'); data = fits.readImg(fptr); fits.closeFile(fptr);
Read a 70x80 image subset.
import matlab.io.* fptr = fits.openFile('tst0012.fits'); img = fits.readImg(fptr,[11 11],[80 90]); fits.closeFile(fptr);