1.2.1.0 ms.concatenate

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ms.concatenate - Function

1.2.1 Concatenate two measurement sets
Description

This function concatenates two measurement sets together.

The data is copied from the measurement set specified in the msfile arguement to the end of the measurement set attached to the ms tool. If a lot of data needs to be copied this function may take some time. You need to open the measurement set for writing in order to use this function.

This function is new to the ms tool and currently requires that both the measurement sets involved in the concatenation were originally derived from of a UVFITS file (and converted using the fromfits function).

Arguments


Inputs
msfile	The name of the measurement set to append
	allowed:	string
	Default:
freqtol	Frequency difference within which 2 spectral windows are considered similar; e.g ’10Hz’
	allowed:	any
	Default:	variant 1Hz
dirtol	Direction difference within which 2 fields are considered the same; e.g ’1mas’
	allowed:	any
	Default:	variant 1mas

Returns
bool

Example

      ms.open("3C273XC1.MS", nomodify=False)
      ms.concatenate("BLLAC.ms", ’1GHz’, ’1arcsec’)
      ms.done()

This example appends the data from the BLLAC measurement set to the end of the 3C273 measurement set. Its going to assume a frequency tolerance of 1GHz and position tolerance of 1 arcsec in deciding if the spw and field in the measurementsets are similar or not.

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