1.2.1.0 ms.clipbuffer

ms.clipbuffer - Function

1.2.1 (NON-FUNCTIONAL???) Clip the internal buffer with specified limits.
Description

This sets flags in the internal buffer based on the clip levels specified. You can flag times, channels and individual pixels based on their deviation from the median. The cliplevel is specified in units of the corresponding average absolute deviation (a robust version of rms).

Arguments


Inputs
pixellevel	cliplevel for pixels (greater than 0)
	allowed:	double
	Default:
timelevel	cliplevel for time slots (greater than 0)
	allowed:	double
	Default:
channellevel	cliplevel for channels (greater than 0)
	allowed:	double
	Default:

Returns
bool

Example

ms.open("3C273XC1.MS")
ms.select({’antenna1’:[3]})
ms.fillbuffer("DATA")
stats=ms.diffbuffer("TIME",15)
ms.clipbuffer(6,5,5)
#2008-05-28 17:15:27  SEVERE  casa::ms::open
#  Exception Reported: RecordInterface: field medTmeF is unknown
#---------------------------------------------------------------------------
#type ’exceptions.StandardError’         Traceback (most recent call last)
#
#/home/aips2mgr/testing/ipython console in module()
#
#type ’exceptions.StandardError’: RecordInterface: field medTmeF is unknown

We open the MS for reading, select a subset and read the data into the buffer. We then remove the average over a 15 point time window and clip the resulting data at 6 times the average absolute deviation from the median for individual pixels, and at 5 times this for channels and timeslots.

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