Coverage for /wheeldirectory/casa-6.7.0-12-py3.10.el8/lib/py/lib/python3.10/site-packages/casatasks/private/task_split.py: 86%

1import os 

2import re 

3import string 

4import time 

5import shutil 

6import numpy as np 

7 

8from . import flaghelper as fh 

9from .update_spw import update_spwchan 

10from .parallel.parallel_data_helper import ParallelDataHelper 

11from .mstools import write_history 

12from casatasks import casalog 

13from casatools import quanta 

14from casatools import table as tbtool 

15from casatools import ms as mstool 

16from casatools import mstransformer as mttool 

17 

18_qa = quanta( ) 

19 

20 

21def split(vis, 

22 outputvis, 

23 keepmms, 

24 field, 

25 spw, 

26 scan, 

27 antenna, 

28 correlation, 

29 timerange, 

30 intent, 

31 array, 

32 uvrange, 

33 observation, 

34 feed, 

35 datacolumn, 

36 keepflags, 

37 width, 

38 timebin, 

39 combine 

40 ): 

41 

42 """Create a visibility subset from an existing visibility set""" 

43 

44 casalog.origin('split') 

45 

46 # Initialize the helper class  

47 pdh = ParallelDataHelper("split", locals()) 

48 

49 # Validate input and output parameters 

50 pdh.setupIO() 

51 

52 # Input vis is an MMS 

53 if pdh.isMMSAndNotServer(vis) and keepmms: 

54 

55 retval = pdh.validateInputParams() 

56 if not retval['status']: 

57 raise Exception('Unable to continue with MMS processing') 

58 

59 pdh.setupCluster('split') 

60 

61 # Execute the jobs 

62 pdh.go() 

63 return 

64 

65 

66 try: 

67 mtlocal = mttool() 

68 # Gather all the parameters in a dictionary.  

69 config = {} 

70 

71 if keepflags: 

72 taqlstr = '' 

73 else: 

74 taqlstr = "NOT (FLAG_ROW OR ALL(FLAG))" 

75 

76 if type(correlation) == list: 

77 correlation = ', '.join(correlation) 

78 correlation = correlation.upper() 

79 

80 config = pdh.setupParameters(inputms=vis, outputms=outputvis, field=str(field), 

81 spw=str(spw), array=str(array), scan=str(scan), antenna=str(antenna), correlation=correlation, 

82 uvrange=uvrange,timerange=timerange, intent=intent, observation=str(observation), 

83 feed=str(feed), taql=taqlstr) 

84 

85 config['datacolumn'] = datacolumn 

86 

87 # Channel averaging 

88 chanaverage = False 

89 chanbin = width 

90 

91 # String type 

92 if isinstance(width, str): 

93 if width.isdigit(): 

94 chanbin = int(width) 

95 else: 

96 casalog.post('Parameter width is invalid. Using 1 as default', 'WARN') 

97 chanbin = width = 1 

98 

99 if chanbin > 1: 

100 chanaverage = True 

101 

102 # List type 

103 elif isinstance(width, list): 

104 if isinstance(width[0], str): 

105 if width[0].isdigit(): 

106 chanbin = map(int,width) 

107 else: 

108 casalog.post('Parameter width is invalid. Using 1 as default', 'WARN') 

109 chanbin = width = 1 

110 

111 # If any chanbin in list is > 1, chanaverage=True 

112 testbin = [i for i in chanbin if i > 1] 

113 if len(testbin) > 0: 

114 chanaverage = True 

115 

116 # Any other type 

117 if not isinstance(chanbin,str) and not isinstance(chanbin,list): 

118 casalog.post('Original type(width) is %s'%type(chanbin),'DEBUG') 

119 if chanbin > 1: 

120 chanaverage = True 

121 

122 if chanaverage: 

123 casalog.post('Parse channel averaging parameters') 

124 config['chanaverage'] = True 

125 # verify that the number of spws is the same of the number of chanbin 

126 pdh.validateChanBin() 

127 # convert numpy types, until CAS-6493 is not fixed 

128 chanbin = fh.evaluateNumpyType(chanbin) 

129 casalog.post('Converted type(width) is %s'%type(chanbin),'DEBUG') 

130 config['chanbin'] = chanbin 

131 

132 # Time averaging 

133 timeaverage = False 

134 tb = _qa.convert(_qa.quantity(timebin), 's')['value'] 

135 if tb > 0: 

136 timeaverage = True 

137 

138 if timeaverage: 

139 casalog.post('Parse time averaging parameters') 

140 config['timeaverage'] = True 

141 config['timebin'] = timebin 

142 config['timespan'] = combine 

143 config['maxuvwdistance'] = 0.0 

144 

145 # Configure the tool  

146 casalog.post('%s'%config, 'DEBUG1') 

147 mtlocal.config(config) 

148 

149 # Open the MS, select the data and configure the output 

150 mtlocal.open() 

151 

152 # Run the tool 

153 mtlocal.run() 

154 

155 mtlocal.done() 

156 

157 finally: 

158 mtlocal.done() 

159 

160 # Local copy of ms tool 

161 mslocal = mstool() 

162 

163 # Update the FLAG_CMD sub-table to reflect any spw/channels selection 

164 # If the spw selection is by name or FLAG_CMD contains spw with names, skip the updating  

165 

166 if ((spw != '') and (spw != '*')) or chanaverage == True: 

167 isopen = False 

168 

169 try: 

170 mytb = tbtool() 

171 mytb.open(outputvis + '/FLAG_CMD', nomodify=False) 

172 isopen = True 

173 nflgcmds = mytb.nrows() 

174 

175 if nflgcmds > 0: 

176 updateFlagCmd = False 

177 

178 # If spw selection is by name in FLAG_CMD, do not update, CAS-7751 

179 mycmd = mytb.getcell('COMMAND', 0) 

180 cmdlist = mycmd.split() 

181 for cmd in cmdlist: 

182 # Match only spw indices, not names 

183 if cmd.__contains__('spw'): 

184 cmd = cmd.strip("spw=") 

185 spwstr = re.search('^[^a-zA-Z]+$', cmd) 

186 if spwstr != None and spwstr.string.__len__() > 0: 

187 updateFlagCmd = True 

188 break 

189 

190 

191 if updateFlagCmd: 

192 mademod = False 

193 cmds = mytb.getcol('COMMAND') 

194 widths = {} 

195 if hasattr(chanbin, 'has_key'): 

196 widths = chanbin 

197 else: 

198 if hasattr(chanbin, '__iter__') and len(chanbin) > 1: 

199 for i in range(len(chanbin)): 

200 widths[i] = chanbin[i] 

201 elif chanbin != 1: 

202 numspw = len(mslocal.msseltoindex(vis=vis, 

203 spw='*')['spw']) 

204 if hasattr(chanbin, '__iter__'): 

205 w = chanbin[0] 

206 else: 

207 w = chanbin 

208 for i in range(numspw): 

209 widths[i] = w 

210 for rownum in range(nflgcmds): 

211 # Matches a bare number or a string quoted any way. 

212 spwmatch = re.search(r'spw\s*=\s*(\S+)', cmds[rownum]) 

213 if spwmatch: 

214 sch1 = spwmatch.groups()[0] 

215 sch1 = re.sub(r"[\'\"]", '', sch1) # Dequote 

216 # Provide a default in case the split selection excludes 

217 # cmds[rownum]. update_spwchan() will throw an exception 

218 # in that case. 

219 cmd = '' 

220 try: 

221 sch2 = update_spwchan(vis, spw, sch1, truncate=True, 

222 widths=widths) 

223 if sch2: 

224 repl = '' 

225 if sch2 != '*': 

226 repl = "spw='" + sch2 + "'" 

227 cmd = cmds[rownum].replace(spwmatch.group(), repl) 

228 except Exception as e: 

229 casalog.post( 

230 "Error %s updating row %d of FLAG_CMD" % (e,rownum), 'WARN') 

231 casalog.post('sch1 = ' + sch1, 'DEBUG1') 

232 casalog.post('cmd = ' + cmd, 'DEBUG1') 

233 if cmd != cmds[rownum]: 

234 mademod = True 

235 cmds[rownum] = cmd 

236 if mademod: 

237 casalog.post('Updating FLAG_CMD', 'INFO') 

238 mytb.putcol('COMMAND', cmds) 

239 

240 else: 

241 casalog.post('FLAG_CMD table contains spw selection by name. Will not update it!','DEBUG') 

242 

243 finally: 

244 if isopen: 

245 mytb.close() 

246 mytb = None 

247 

248 # Write history to output MS, not the input ms. 

249 try: 

250 param_names = split.__code__.co_varnames[:split.__code__.co_argcount] 

251 local_vars = locals( ) 

252 param_vals = [local_vars[p] for p in param_names] 

253 write_history(mslocal, outputvis, 'split', param_names, 

254 param_vals, casalog) 

255 except Exception as instance: 

256 casalog.post("*** Error \'%s\' updating HISTORY" % (instance),'WARN') 

257 

258 mslocal = None