nifits.io.oifits

A module for reading/writing NIFITS files and handling the data.

To open an existing NIFITS file, use nifits.from_nifits constructor.

To save an NIFITS object to a file, use nifits.to_nifits method.

A summary of the information in the oifits object can be obtained by using the info() method:

> import oifits > oifitsobj = oifits.open(‘foo.fits’) > oifitsobj.info()

For further information, contact R. Laugier

Module Attributes

NI_FOV_DEFAULT_HEADER

Obtaining the goecentric location of observatories.

Functions

array_eq(a, b)	Test whether all the elements of two arrays are equal.
check_item(func)	A decorator for the fits.Header.__getitem__.
create_basic_fov_data(D, offset, lamb, n)	A convenience function to help define the FOV function and data model
getclass(classname)
nulfunc(self, *args, **kwargs)

Classes

NI_CATM([data_table, header, unit, data_array])	The complex amplitude transfre function
NI_DSAMP([data_table, header, unit, data_array])	The matrix that defines linear combinations of output wavelengths.
NI_EXTENSION([data_table, header, unit])	NI_EXTENSION Generic class for NIFITS extensions
NI_EXTENSION_ARRAY([data_table, header, ...])	Generic class for NIFITS array extensions
NI_EXTENSION_CPX_ARRAY([data_table, header, ...])	Generic class for NIFITS array extensions.
NI_FOV([data_table, header, unit])	The NI_FOV data containing information of the field of view (vigneting) function as a function of wavelength.
NI_IOTAGS([data_table, header, unit])	Contains information on the inputs and outputs.
NI_IOUT([data_table, header, unit])	NI_IOUT : a recording of the output values, given in intensity, flux, counts or arbitrary units.
NI_KCOV([data_table, header, unit, data_array])	The covariance matrix for the processed data contained in KIOUT.
NI_KIOUT([data_table, header, unit])	NI_KIOUT : a recording of the processed output values using the the post-processing matrix given by NI_KMAT.
NI_KMAT([data_table, header, unit, data_array])	The kernel matrix that defines the post-processing operation between outputs.
NI_MOD([data_table, header, unit])	Contains input modulation vector for the given observation.
NI_OSWAVELENGTH([data_table, header, unit])	An object storing the wavelength before a downsampling.
OI_ARRAY([data_table, header, unit])	OI_ARRAY definition
OI_STATION([tel_name, sta_name, diameter, ...])	This class corresponds to a single row (i.e. single station/telescope) of an OI_ARRAY table.
OI_TARGET([data_table, header, unit])	OI_TARGET definition.
OI_WAVELENGTH([data_table, header, unit])	An object storing the OI_WAVELENGTH information, in compatibility with OIFITS practices.
nifits([header, oi_array, ni_catm, ni_fov, ...])	Class representation of the nifits object.