SetAttribute

class baseband_tasks.base.SetAttribute(ih, *, start_time=None, sample_rate=None, **kwargs)

Bases: baseband_tasks.base.TaskBase

Wrapper for streams that allows one to set or change attributes.

Can be used to add frequency, sideband and polarization attributes, which most baseband readers do not provide, checking that the values broadcast properly to the sample shape.

Can also be used to apply a clock correction by changing start_time.

The sample_rate can also be set, but no check is done to ensure it remains consistent with the frequency.

One can also change the shape, samples_per_frames, or dtype but that will be slightly slower, as the class can then not read directly from the underlying stream.

By default, all parameters are taken from the underlying stream.

Parameters

ihstream handle

Handle of a stream reader or another task.

start_timeTime, optional

Start time of the stream.

sample_rateQuantity, optional

With units of a rate.

**kwargs

Other parameters and metadata. See TaskBase.

— Possible metadata(see BaseTaskBase)

frequencyQuantity, optional

Frequencies for each channel. Should be broadcastable to the sample shape.

sidebandarray, optional

Whether frequencies are upper (+1) or lower (-1) sideband. Should be broadcastable to the sample shape.

polarizationarray or (nested) list of char, optional

Polarization labels. Should broadcast to the sample shape, i.e., the labels are in the correct axis. For instance, ['X', 'Y'], or [['L'], ['R']].

Methods Summary

simple_read(*args, **kwargs)	Read data from the underlying stream at the current offset.
task(data)

Methods Documentation

simple_read(*args, **kwargs)

Read data from the underlying stream at the current offset.

task(data)