Figure Properties - SERC

fitsread
2fitsread
Purpose Extract data from a FITS file
Syntax data = fitsread(filename)
data = fitsread(filename, 'raw')
data = fitsread(filename, extname)
data = fitsread(filename, extname, index)
Description data = fitsread(filename) reads the primary data of the Flexible Image
Transport System (FITS) file specified by filename. Undefined data values are
replaced by NaN. Numeric data are scaled by the slope and intercept values and
are always returned in double precision.
2-848
data = fitsread(filename, extname) reads data from a FITS file according
to the data array or extension specified in extname. You can specify only one
extname. The valid choices for extname are shown in the following table.
Data Arrays or Extensions
extname Description
'primary' Read data from the primary data array.
'table' Read data from the ASCII Table extension.
'bintable' Read data from the Binary Table extension.
'image' Read data from the Image extension.
'unknown' Read data from the Unknown extension.
data = fitsread(filename, extname, index) is the same as the above
syntax, except that if there is more than one of the specified extension type
extname in the file, then only the one at the specified index is read.
data = fitsread(filename, 'raw', ...) reads the primary or extension
data of the FITS file, but, unlike the above syntaxes, does not replace undefined
data values with NaN and does not scale the data. The data returned has the
same class as the data stored in the file.