nraonrao
 
NRAO Home > CASA > CasaRef

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

ms.msseltoindex - Function

1.2.1 Returns ids of the selection used
Description

Utility function that will return the ids of the selection used.

Arguments

Inputs

vis

Measurementset for which this selection applies

allowed:

string

Default:

spw

Spectral Window Ids (0 relative) to select; -1 interpreted as all

allowed:

any

Default:

variant

field

Field Ids (0 relative) or Field names (msselection syntax and wilcards are used) to select

allowed:

any

Default:

variantvariant

baseline

Antenna Ids (0 relative) or Antenna names (msselection syntax and wilcards are used) to select

allowed:

any

Default:

variant

time

Limit data selected to be within a given time range. Syntax is the defined in the msselection link

allowed:

any

Default:

variant

scan

Limit data selected on scan numbers. Syntax is the defined in the msselection link

allowed:

any

Default:

variant

uvrange

Limit data selected on uv distance. Syntax is the defined in the msselection link

allowed:

any

Default:

variant

taql

For the TAQL experts, flexible data selection using the TAQL syntax

allowed:

string

Default:

Returns
anyrecord

Example

     a= ms.msseltoindex(vis=’3C273XC1.MS’, field=’3C*’)  
     print a[’field’]  
     # [0]  
     print a  
     #{’antenna1’: array([], dtype=int32),  
     # ’antenna2’: array([], dtype=int32),  
     #  ’channel’: array([], shape=(0, 0), dtype=int32),  
     #  ’field’: array([0]),  
     #  ’scan’: array([], dtype=int32),  
     #  ’spw’: array([], dtype=int32)}  
    

Field name ’3C*’, in this case 3C273, corresponds to field id 0.

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

Please send any comments or questions about CASA or AIPS++ to aips2-requests@nrao.edu

Copyright © 2008 Associated Universities Inc., Washington, D.C.

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

Home | Contact Us | Directories | Site Map | Help | Privacy Policy | Search

Updated daily during alpha development.