Coverage for /wheeldirectory/casa-6.7.0-12-py3.10.el8/lib/py/lib/python3.10/site-packages/casatasks/phaseshift.py: 56%
27 statements
« prev ^ index » next coverage.py v7.6.4, created at 2024-10-31 17:39 +0000
1##################### generated by xml-casa (v2) from phaseshift.xml ################
2##################### 790188cc655c2a2e1e60d0786440bfaa ##############################
3from __future__ import absolute_import
4import numpy
5from casatools.typecheck import CasaValidator as _val_ctor
6_pc = _val_ctor( )
7from casatools.coercetype import coerce as _coerce
8from casatools.errors import create_error_string
9from .private.task_phaseshift import phaseshift as _phaseshift_t
10from casatasks.private.task_logging import start_log as _start_log
11from casatasks.private.task_logging import end_log as _end_log
12from casatasks.private.task_logging import except_log as _except_log
14class _phaseshift:
15 """
16 phaseshift ---- Rotate a Measurement Set to a new phase-center
19 This application changes the phase center of a selected subset of an input MS, by taking into
20 account the full 3D geometry in the UVW plane (similar to the phasecenter setting in the
21 imaging tasks). This function produces an output MS with modified UVW values, visibility
22 phases, and a new phase_direction entry in the FIELD sub-table.
25 --------- parameter descriptions ---------------------------------------------
27 vis Name of input visibility file
28 Default: none, must be specified
30 Example: vis='ngc5921.ms'
31 outputvis Name of output visibility file
32 Default: None, must be specified
34 Example: outputvis='ngc5921_out.ms'
35 keepmms Create a Multi-MS as the output if the input is a
36 Multi-MS.
38 Default: True
39 Options: True|False
41 By default it will create a Multi-MS when the
42 input is a Multi-MS. The output Multi-MS will
43 have the same partition axis of the input
44 MMS. See CASA Docs for more information on
45 the MMS format.
46 field Select field using field id(s) or field name(s)
47 Default: '' (all fields)
49 Use 'go listobs' to obtain the list id's or
50 names. If field string is a non-negative integer,
51 it is assumed a field index, otherwise, it is
52 assumed a field name.
54 Examples:
55 field='0~2'; field ids 0,1,2
56 field='0,4,5~7'; field ids 0,4,5,6,7
57 field='3C286,3C295'; field named 3C286 and
58 3C295
59 field = '3,4C\*'; field id 3, all names
60 starting with 4C
61 spw Select spectral window/channels
62 Default: ''=all spectral windows and channels
64 Examples:
65 spw='0~2,4'; spectral windows 0,1,2,4 (all channels)
66 spw='<2'; spectral windows less than 2 (i.e. 0,1)
67 spw='0:5~61'; spw 0, channels 5 to 61
68 spw='0,10,3:3~45'; spw 0,10 all channels, spw
69 3 - chans 3 to 45.
70 spw='0~2:2~6'; spw 0,1,2 with channels 2
71 through 6 in each.
72 spw = '\*:3~64' channels 3 through 64 for all sp id's
73 spw = ' :3~64' will NOT work.
74 scan Scan number range
75 Default: '' = all
76 intent Select observing intent
77 Default: '' (no selection by intent)
79 Example: intent='*BANDPASS*' (selects data
80 labelled with BANDPASS intent)
81 array (Sub)array number range
82 Default: '' (all)
83 observation Select by observation ID(s)
84 Default: '' = all
86 Example: observation='0~2,4'
87 datacolumn Which data column(s) to process
88 (case-insensitive).
89 Default: 'all' (= whichever of the options that
90 are present)
91 Options: 'data', 'model', 'corrected',
92 'all','float_data', 'lag_data',
93 'float_data,data', 'lag_data,data'
95 Example: datacolumn='data'
96 phasecenter Direction coordinates of new phase center, specified as absolute
97 world coordinates including frame, eg
99 phasecenter = 'J2000 19h53m50 40d06m00'
100 phasecenter = 'B1950 292.5deg -40.0deg'
101 phasecenter = 'ICRS 13:05:27.2780 -049.28.04.458'
102 phasecenter = 'GALACTIC 47.5rad -60.22rad'
104 Time dependent systems (eg, AZEL) are not supported, nor are ephemeris objects.
106 This will change the phase of the baseline visibilities so that the
107 final image is centered at the new location. Additionally the uvw
108 coordinates and the the PHASE_DIR column from the FIELD sub-table
109 will be changed accordingly.
111 This operation will be done for all selected fields, so all fields in the output
112 MS will have as center the new location. The new phase center is not constrained to
113 be located inside any images to be created.
115 --------- examples -----------------------------------------------------------
120 """
122 _info_group_ = """manipulation"""
123 _info_desc_ = """Rotate a Measurement Set to a new phase-center"""
125 def __call__( self, vis='', outputvis='', keepmms=True, field='', spw='', scan='', intent='', array='', observation='', datacolumn='all', phasecenter='' ):
126 schema = {'vis': {'type': 'cReqPath', 'coerce': _coerce.expand_path}, 'outputvis': {'type': 'cStr', 'coerce': _coerce.to_str}, 'keepmms': {'type': 'cBool'}, 'field': {'type': 'cStr', 'coerce': _coerce.to_str}, 'spw': {'type': 'cStr', 'coerce': _coerce.to_str}, 'scan': {'type': 'cStr', 'coerce': _coerce.to_str}, 'intent': {'type': 'cStr', 'coerce': _coerce.to_str}, 'array': {'type': 'cStr', 'coerce': _coerce.to_str}, 'observation': {'type': 'cStr', 'coerce': _coerce.to_str}, 'datacolumn': {'type': 'cStr', 'coerce': _coerce.to_str, 'allowed': [ 'DATA', 'model', 'corrected', 'LAG_DATA', 'lag_data', 'FLOAT_DATA,DATA', 'FLOAT_DATA', 'CORRECTED', 'lag_data,data', 'float_data', 'float_data,data', 'DATA,MODEL,CORRECTED', 'ALL', 'MODEL', 'all', 'data,model,corrected', 'LAG_DATA,DATA', 'data' ]}, 'phasecenter': {'type': 'cStr', 'coerce': _coerce.to_str}}
127 doc = {'vis': vis, 'outputvis': outputvis, 'keepmms': keepmms, 'field': field, 'spw': spw, 'scan': scan, 'intent': intent, 'array': array, 'observation': observation, 'datacolumn': datacolumn, 'phasecenter': phasecenter}
128 assert _pc.validate(doc,schema), create_error_string(_pc.errors)
129 _logging_state_ = _start_log( 'phaseshift', [ 'vis=' + repr(_pc.document['vis']), 'outputvis=' + repr(_pc.document['outputvis']), 'keepmms=' + repr(_pc.document['keepmms']), 'field=' + repr(_pc.document['field']), 'spw=' + repr(_pc.document['spw']), 'scan=' + repr(_pc.document['scan']), 'intent=' + repr(_pc.document['intent']), 'array=' + repr(_pc.document['array']), 'observation=' + repr(_pc.document['observation']), 'datacolumn=' + repr(_pc.document['datacolumn']), 'phasecenter=' + repr(_pc.document['phasecenter']) ] )
130 task_result = None
131 try:
132 task_result = _phaseshift_t( _pc.document['vis'], _pc.document['outputvis'], _pc.document['keepmms'], _pc.document['field'], _pc.document['spw'], _pc.document['scan'], _pc.document['intent'], _pc.document['array'], _pc.document['observation'], _pc.document['datacolumn'], _pc.document['phasecenter'] )
133 except Exception as exc:
134 _except_log('phaseshift', exc)
135 raise
136 finally:
137 task_result = _end_log( _logging_state_, 'phaseshift', task_result )
138 return task_result
140phaseshift = _phaseshift( )