Mark4FileWriter

class baseband.mark4.base.Mark4FileWriter(fh_raw)

Bases: FileBase

Simple writer for Mark 4 files.

Adds write_frame method to the VLBI binary file wrapper.

Attributes Summary

fh_raw

Methods Summary

close()
temporary_offset([offset, whence])	Context manager for temporarily seeking to another file position.
write_frame(data[, header])	Write a single frame (header plus payload).

Attributes Documentation

fh_raw = None

Methods Documentation

close()

temporary_offset(offset=None, whence=0)

Context manager for temporarily seeking to another file position.

To be used as part of a with statement:

with fh_raw.temporary_offset() [as fh_raw]:
    with-block

On exiting the with-block, the file pointer is moved back to its original position. As a convenience, one can pass on the offset to seek to when entering the context manager. Parameters are as for io.IOBase.seek().

write_frame(data, header=None, **kwargs)

Write a single frame (header plus payload).

Parameters:

datandarray or Mark4Frame

If an array, a header should be given, which will be used to get the information needed to encode the array, and to construct the Mark 4 frame.

headerMark4Header

Can instead give keyword arguments to construct a header. Ignored if payload is a Mark4Frame instance.

**kwargs

If header is not given, these are used to initialize one.