1.3.1.0 ms.concatenate

NRAO Home > CASA > CASA Toolkit Reference Manual

ms.concatenate - Function

1.3.1 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.

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
weightscale	Scale the weights of the MS to be appended by this factor
	allowed:	float
	Default:	1.
handling	Switch for the handling of the Main and Pointing tables: 0=standard, 1=no Main, 2=no Pointing, 3=no Main and Pointing, 4=virtual
	allowed:	int
	Default:	0
destmsfile	Optional support for virtual concat: empty table (no subtables) where to store the appended MS copy
	allowed:	string
	Default:
respectname	If true, fields with a different name are not merged even if their direction agrees
	allowed:	bool
	Default:	false

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.

__________________________________________________________________

[next] [prev] [prev-tail] [front] [up]

More information about CASA may be found at the CASA web page

This code is available under the terms of the GNU General Public Lincense