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ms.fromfits - Function

1.3.1 Create a measurement set from a uvfits file


Description

This function will convert a UVFITS file to a measurement set table and then open the measurement set table. The newly created measurement set table will continue to exist after the tool has been closed.

Setting the lock argument to True will permanently lock the table preventing other processes from writing to the measurement set. Unless you expect this to happen, and want to prevent it, you should leave the lock argument at the default value which implies auto-locking.

Note that the variety of fits files that fromfits is able to interpret correctly is limited mostly to files similar to those produced by classic AIPS. In particular, it understands only binary table extensions for the antenna (AN), frequency (FQ) and source (SU) information and ignores other extensions.

This function returns True if it successfully attachs the ms tool to a newly created Measurement Set or False if something went wrong, like an error in a file name.

Arguments





Inputs

msfile

Filename for the newly created measurement set

allowed:

string

Default:

fitsfile

uvfits file to read

allowed:

string

Default:

nomodify

open for read access only

allowed:

bool

Default:

true

lock

lock the table for exclusive use

allowed:

bool

Default:

false

obstype

specify the observation type: 0=standard, 1=fastmosaic, requiring small tiles in the measurement set

allowed:

int

Default:

0

host

host to start ms tool on (IGNORED!!!)

allowed:

string

Default:

forcenewserver

start a new server tool (IGNORED!!!)

allowed:

bool

Default:

false

antnamescheme

For VLA only, antenna name scheme, old style is just antenna number, new style prepends VA or EV

allowed:

string

Default:

old

Returns
bool

Example

 
 
      ms.fromfits("3C273XC1.MS", "3C273XC1.fits")  
 

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