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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.  

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