[100] | 1 | """ |
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| 2 | This is the ATNF Single Dish Analysis package. |
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| 3 | |
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| 4 | """ |
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[226] | 5 | import os,sys |
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| 6 | |
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[513] | 7 | def _validate_bool(b): |
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[226] | 8 | 'Convert b to a boolean or raise' |
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| 9 | bl = b.lower() |
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| 10 | if bl in ('f', 'no', 'false', '0', 0): return False |
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| 11 | elif bl in ('t', 'yes', 'true', '1', 1): return True |
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| 12 | else: |
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| 13 | raise ValueError('Could not convert "%s" to boolean' % b) |
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| 14 | |
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[513] | 15 | def _validate_int(s): |
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[226] | 16 | 'convert s to int or raise' |
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| 17 | try: return int(s) |
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| 18 | except ValueError: |
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| 19 | raise ValueError('Could not convert "%s" to int' % s) |
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| 20 | |
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[513] | 21 | def _asap_fname(): |
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[226] | 22 | """ |
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| 23 | Return the path to the rc file |
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| 24 | |
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| 25 | Search order: |
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| 26 | |
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| 27 | * current working dir |
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| 28 | * environ var ASAPRC |
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[274] | 29 | * HOME/.asaprc |
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[706] | 30 | |
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[226] | 31 | """ |
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| 32 | |
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| 33 | fname = os.path.join( os.getcwd(), '.asaprc') |
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| 34 | if os.path.exists(fname): return fname |
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| 35 | |
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| 36 | if os.environ.has_key('ASAPRC'): |
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| 37 | path = os.environ['ASAPRC'] |
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| 38 | if os.path.exists(path): |
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| 39 | fname = os.path.join(path, '.asaprc') |
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| 40 | if os.path.exists(fname): |
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| 41 | return fname |
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| 42 | |
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| 43 | if os.environ.has_key('HOME'): |
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| 44 | home = os.environ['HOME'] |
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| 45 | fname = os.path.join(home, '.asaprc') |
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| 46 | if os.path.exists(fname): |
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| 47 | return fname |
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| 48 | return None |
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| 49 | |
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[706] | 50 | |
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[226] | 51 | defaultParams = { |
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| 52 | # general |
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[513] | 53 | 'verbose' : [True, _validate_bool], |
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| 54 | 'useplotter' : [True, _validate_bool], |
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[542] | 55 | 'insitu' : [True, _validate_bool], |
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[706] | 56 | |
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[226] | 57 | # plotting |
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[706] | 58 | 'plotter.gui' : [True, _validate_bool], |
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[226] | 59 | 'plotter.stacking' : ['p', str], |
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| 60 | 'plotter.panelling' : ['s', str], |
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[700] | 61 | 'plotter.colours' : ['', str], |
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| 62 | 'plotter.linestyles' : ['', str], |
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[710] | 63 | 'plotter.decimate' : [False, _validate_bool], |
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| 64 | 'plotter.ganged' : [True, _validate_bool], |
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[1022] | 65 | 'plotter.histogram' : [False, _validate_bool], |
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[710] | 66 | |
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[226] | 67 | # scantable |
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| 68 | 'scantable.save' : ['ASAP', str], |
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[513] | 69 | 'scantable.autoaverage' : [True, _validate_bool], |
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[226] | 70 | 'scantable.freqframe' : ['LSRK', str], #default frequency frame |
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[1076] | 71 | 'scantable.verbosesummary' : [False, _validate_bool], |
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| 72 | 'scantable.storage' : ['memory', str] |
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[226] | 73 | # fitter |
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| 74 | } |
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| 75 | |
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[255] | 76 | def list_rcparameters(): |
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[706] | 77 | |
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[255] | 78 | print """ |
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[737] | 79 | # general |
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| 80 | # print verbose output |
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| 81 | verbose : True |
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[255] | 82 | |
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[737] | 83 | # preload a default plotter |
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| 84 | useplotter : True |
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[255] | 85 | |
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[737] | 86 | # apply operations on the input scantable or return new one |
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| 87 | insitu : True |
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[706] | 88 | |
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[737] | 89 | # plotting |
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[710] | 90 | |
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[737] | 91 | # do we want a GUI or plot to a file |
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| 92 | plotter.gui : True |
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[710] | 93 | |
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[737] | 94 | # default mode for colour stacking |
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| 95 | plotter.stacking : Pol |
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[255] | 96 | |
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[737] | 97 | # default mode for panelling |
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| 98 | plotter.panelling : scan |
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[255] | 99 | |
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[737] | 100 | # push panels together, to share axislabels |
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| 101 | plotter.ganged : True |
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[710] | 102 | |
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[737] | 103 | # decimate the number of points plotted bya afactor of |
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| 104 | # nchan/1024 |
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| 105 | plotter.decimate : False |
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[733] | 106 | |
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[737] | 107 | # default colours/linestyles |
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| 108 | plotter.colours : |
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| 109 | plotter.linestyles : |
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[700] | 110 | |
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[1022] | 111 | # enable/disable histogram plotting |
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| 112 | plotter.histogram : False |
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| 113 | |
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[737] | 114 | # scantable |
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[1076] | 115 | |
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| 116 | # default storage of scantable (memory/disk) |
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| 117 | scantable.storage : memory |
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[737] | 118 | # default ouput format when saving |
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| 119 | scantable.save : ASAP |
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| 120 | # auto averaging on read |
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| 121 | scantable.autoaverage : True |
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[255] | 122 | |
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[737] | 123 | # default frequency frame to set when function |
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| 124 | # scantable.set_freqfrmae is called |
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| 125 | scantable.freqframe : LSRK |
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[255] | 126 | |
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[737] | 127 | # Control the level of information printed by summary |
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| 128 | scantable.verbosesummary : False |
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[706] | 129 | |
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[737] | 130 | # Fitter |
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| 131 | """ |
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[706] | 132 | |
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[226] | 133 | def rc_params(): |
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| 134 | 'Return the default params updated from the values in the rc file' |
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[706] | 135 | |
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[513] | 136 | fname = _asap_fname() |
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[706] | 137 | |
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[226] | 138 | if fname is None or not os.path.exists(fname): |
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| 139 | message = 'could not find rc file; returning defaults' |
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| 140 | ret = dict([ (key, tup[0]) for key, tup in defaultParams.items()]) |
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| 141 | #print message |
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| 142 | return ret |
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[706] | 143 | |
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[226] | 144 | cnt = 0 |
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| 145 | for line in file(fname): |
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| 146 | cnt +=1 |
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| 147 | line = line.strip() |
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| 148 | if not len(line): continue |
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| 149 | if line.startswith('#'): continue |
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| 150 | tup = line.split(':',1) |
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| 151 | if len(tup) !=2: |
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| 152 | print ('Illegal line #%d\n\t%s\n\tin file "%s"' % (cnt, line, fname)) |
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| 153 | continue |
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[706] | 154 | |
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[226] | 155 | key, val = tup |
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| 156 | key = key.strip() |
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| 157 | if not defaultParams.has_key(key): |
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| 158 | print ('Bad key "%s" on line %d in %s' % (key, cnt, fname)) |
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| 159 | continue |
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[706] | 160 | |
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[226] | 161 | default, converter = defaultParams[key] |
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| 162 | |
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| 163 | ind = val.find('#') |
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| 164 | if ind>=0: val = val[:ind] # ignore trailing comments |
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| 165 | val = val.strip() |
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| 166 | try: cval = converter(val) # try to convert to proper type or raise |
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| 167 | except Exception, msg: |
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| 168 | print ('Bad val "%s" on line #%d\n\t"%s"\n\tin file "%s"\n\t%s' % (val, cnt, line, fname, msg)) |
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| 169 | continue |
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| 170 | else: |
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| 171 | # Alles Klar, update dict |
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| 172 | defaultParams[key][0] = cval |
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| 173 | |
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| 174 | # strip the conveter funcs and return |
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| 175 | ret = dict([ (key, tup[0]) for key, tup in defaultParams.items()]) |
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[466] | 176 | print ('loaded rc file %s'%fname) |
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[226] | 177 | |
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| 178 | return ret |
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| 179 | |
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| 180 | |
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| 181 | # this is the instance used by the asap classes |
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[706] | 182 | rcParams = rc_params() |
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[226] | 183 | |
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| 184 | rcParamsDefault = dict(rcParams.items()) # a copy |
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| 185 | |
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| 186 | def rc(group, **kwargs): |
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| 187 | """ |
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| 188 | Set the current rc params. Group is the grouping for the rc, eg |
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[379] | 189 | for scantable.save the group is 'scantable', for plotter.stacking, the |
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| 190 | group is 'plotter', and so on. kwargs is a list of attribute |
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[226] | 191 | name/value pairs, eg |
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| 192 | |
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[379] | 193 | rc('scantable', save='SDFITS') |
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[226] | 194 | |
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| 195 | sets the current rc params and is equivalent to |
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[706] | 196 | |
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[379] | 197 | rcParams['scantable.save'] = 'SDFITS' |
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[226] | 198 | |
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| 199 | Use rcdefaults to restore the default rc params after changes. |
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| 200 | """ |
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| 201 | |
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[379] | 202 | aliases = {} |
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[706] | 203 | |
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[226] | 204 | for k,v in kwargs.items(): |
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| 205 | name = aliases.get(k) or k |
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| 206 | key = '%s.%s' % (group, name) |
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| 207 | if not rcParams.has_key(key): |
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| 208 | raise KeyError('Unrecognized key "%s" for group "%s" and name "%s"' % (key, group, name)) |
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[706] | 209 | |
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[226] | 210 | rcParams[key] = v |
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| 211 | |
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| 212 | |
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| 213 | def rcdefaults(): |
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| 214 | """ |
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| 215 | Restore the default rc params - the ones that were created at |
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| 216 | asap load time |
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| 217 | """ |
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| 218 | rcParams.update(rcParamsDefault) |
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| 219 | |
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[513] | 220 | |
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| 221 | def _is_sequence_or_number(param, ptype=int): |
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| 222 | if isinstance(param,tuple) or isinstance(param,list): |
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[928] | 223 | if len(param) == 0: return True # empty list |
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[513] | 224 | out = True |
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| 225 | for p in param: |
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| 226 | out &= isinstance(p,ptype) |
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| 227 | return out |
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| 228 | elif isinstance(param, ptype): |
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| 229 | return True |
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| 230 | return False |
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| 231 | |
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[928] | 232 | def _to_list(param, ptype=int): |
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| 233 | if isinstance(param, ptype): |
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| 234 | if ptype is str: return param.split() |
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| 235 | else: return [param] |
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| 236 | if _is_sequence_or_number(param, ptype): |
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| 237 | return param |
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| 238 | return None |
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[715] | 239 | |
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[944] | 240 | def unique(x): |
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[992] | 241 | """ |
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| 242 | Return the unique values in a list |
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| 243 | Parameters: |
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| 244 | x: the list to reduce |
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| 245 | Examples: |
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| 246 | x = [1,2,3,3,4] |
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| 247 | print unique(x) |
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| 248 | [1,2,3,4] |
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| 249 | """ |
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[944] | 250 | return dict([ (val, 1) for val in x]).keys() |
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| 251 | |
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[992] | 252 | def list_files(path=".",suffix="rpf"): |
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| 253 | """ |
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| 254 | Return a list files readable by asap, such as rpf, sdfits, mbf, asap |
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| 255 | Parameters: |
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| 256 | path: The directory to list (default '.') |
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| 257 | suffix: The file extension (default rpf) |
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| 258 | Example: |
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| 259 | files = list_files("data/","sdfits") |
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| 260 | print files |
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| 261 | ['data/2001-09-01_0332_P363.sdfits', |
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| 262 | 'data/2003-04-04_131152_t0002.sdfits', |
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| 263 | 'data/Sgr_86p262_best_SPC.sdfits'] |
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| 264 | """ |
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| 265 | import os |
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| 266 | if not os.path.isdir(path): |
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| 267 | return None |
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| 268 | valid = "rpf sdf sdfits mbf asap".split() |
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| 269 | if not suffix in valid: |
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| 270 | return None |
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| 271 | files = [os.path.expanduser(os.path.expandvars(path+"/"+f)) for f in os.listdir(path)] |
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| 272 | return filter(lambda x: x.endswith(suffix),files) |
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| 273 | |
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[715] | 274 | # workaround for ipython, which redirects this if banner=0 in ipythonrc |
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| 275 | sys.stdout = sys.__stdout__ |
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| 276 | sys.stderr = sys.__stderr__ |
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| 277 | |
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| 278 | # Logging |
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| 279 | from asap._asap import Log as _asaplog |
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| 280 | global asaplog |
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[710] | 281 | asaplog=_asaplog() |
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[715] | 282 | if rcParams['verbose']: |
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| 283 | asaplog.enable() |
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| 284 | else: |
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| 285 | asaplog.disable() |
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| 286 | |
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| 287 | def print_log(): |
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| 288 | log = asaplog.pop() |
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| 289 | if len(log) and rcParams['verbose']: print log |
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| 290 | return |
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| 291 | |
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[113] | 292 | from asapfitter import * |
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[895] | 293 | from asapreader import reader |
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[944] | 294 | from selector import selector |
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[710] | 295 | |
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[100] | 296 | from asapmath import * |
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[880] | 297 | from scantable import * |
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| 298 | from asaplinefind import * |
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[876] | 299 | #from asapfit import * |
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[285] | 300 | |
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[466] | 301 | from numarray import logical_and as mask_and |
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| 302 | from numarray import logical_or as mask_or |
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| 303 | from numarray import logical_not as mask_not |
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| 304 | |
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[928] | 305 | if rcParams['useplotter']: |
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| 306 | from asapplotter import * |
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| 307 | gui = os.environ.has_key('DISPLAY') and rcParams['plotter.gui'] |
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| 308 | plotter = asapplotter(gui) |
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| 309 | del gui |
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[285] | 310 | |
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[1069] | 311 | |
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[574] | 312 | __date__ = '$Date: 2006-07-06 01:25:34 +0000 (Thu, 06 Jul 2006) $'.split()[1] |
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[1069] | 313 | __version__ = '2.1a' |
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[100] | 314 | |
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[706] | 315 | if rcParams['verbose']: |
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[1014] | 316 | def version(): print "ASAP %s(%s)"% (__version__, __date__) |
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[706] | 317 | def list_scans(t = scantable): |
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| 318 | import sys, types |
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| 319 | globs = sys.modules['__main__'].__dict__.iteritems() |
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| 320 | print "The user created scantables are:" |
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| 321 | sts = map(lambda x: x[0], filter(lambda x: isinstance(x[1], t), globs)) |
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| 322 | print filter(lambda x: not x.startswith('_'), sts) |
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| 323 | return |
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[100] | 324 | |
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[715] | 325 | def commands(): |
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| 326 | x = """ |
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[113] | 327 | [The scan container] |
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| 328 | scantable - a container for integrations/scans |
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[182] | 329 | (can open asap/rpfits/sdfits and ms files) |
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[113] | 330 | copy - returns a copy of a scan |
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| 331 | get_scan - gets a specific scan out of a scantable |
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[984] | 332 | (by name or number) |
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| 333 | set_selection - set a new subselection of the data |
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| 334 | get_selection - get the current selection object |
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[113] | 335 | summary - print info about the scantable contents |
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[182] | 336 | stats - get specified statistic of the spectra in |
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| 337 | the scantable |
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| 338 | stddev - get the standard deviation of the spectra |
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| 339 | in the scantable |
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[113] | 340 | get_tsys - get the TSys |
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| 341 | get_time - get the timestamps of the integrations |
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[733] | 342 | get_sourcename - get the source names of the scans |
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[794] | 343 | get_azimuth - get the azimuth of the scans |
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| 344 | get_elevation - get the elevation of the scans |
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| 345 | get_parangle - get the parallactic angle of the scans |
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[876] | 346 | get_unit - get the current unit |
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[513] | 347 | set_unit - set the abcissa unit to be used from this |
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| 348 | point on |
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[255] | 349 | get_abcissa - get the abcissa values and name for a given |
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| 350 | row (time) |
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[113] | 351 | set_freqframe - set the frame info for the Spectral Axis |
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| 352 | (e.g. 'LSRK') |
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[276] | 353 | set_doppler - set the doppler to be used from this point on |
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[984] | 354 | set_dirframe - set the frame for the direction on the sky |
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[240] | 355 | set_instrument - set the instrument name |
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[255] | 356 | get_fluxunit - get the brightness flux unit |
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[240] | 357 | set_fluxunit - set the brightness flux unit |
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[188] | 358 | create_mask - return an mask in the current unit |
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| 359 | for the given region. The specified regions |
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| 360 | are NOT masked |
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[255] | 361 | get_restfreqs - get the current list of rest frequencies |
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| 362 | set_restfreqs - set a list of rest frequencies |
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[1012] | 363 | flag - flag selected channels in the data |
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[116] | 364 | save - save the scantable to disk as either 'ASAP' |
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| 365 | or 'SDFITS' |
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[486] | 366 | nbeam,nif,nchan,npol - the number of beams/IFs/Pols/Chans |
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[733] | 367 | nscan - the number of scans in the scantable |
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[984] | 368 | nrow - te number of spectra in the scantable |
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[486] | 369 | history - print the history of the scantable |
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[530] | 370 | get_fit - get a fit which has been stored witnh the data |
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[706] | 371 | average_time - return the (weighted) time average of a scan |
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[513] | 372 | or a list of scans |
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[1069] | 373 | average_channel - return the (median) average of a scantable |
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[513] | 374 | average_pol - average the polarisations together. |
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[113] | 375 | The dimension won't be reduced and |
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| 376 | all polarisations will contain the |
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| 377 | averaged spectrum. |
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[992] | 378 | convert_pol - convert to a different polarisation type |
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[690] | 379 | auto_quotient - return the on/off quotient with |
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[1069] | 380 | automatic detection of the on/off scans (closest |
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| 381 | in time off is selected) |
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[1014] | 382 | scale, *, / - return a scan scaled by a given factor |
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| 383 | add, +, - - return a scan with given value added |
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[513] | 384 | bin - return a scan with binned channels |
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| 385 | resample - return a scan with resampled channels |
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| 386 | smooth - return the spectrally smoothed scan |
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| 387 | poly_baseline - fit a polynomial baseline to all Beams/IFs/Pols |
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[706] | 388 | auto_poly_baseline - automatically fit a polynomial baseline |
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[780] | 389 | recalc_azel - recalculate azimuth and elevation based on |
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| 390 | the pointing |
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[513] | 391 | gain_el - apply gain-elevation correction |
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| 392 | opacity - apply opacity correction |
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| 393 | convert_flux - convert to and from Jy and Kelvin brightness |
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[255] | 394 | units |
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[513] | 395 | freq_align - align spectra in frequency frame |
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[1014] | 396 | invert_phase - Invert the phase of the cross-correlation |
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| 397 | swap_linears - Swap XX and YY |
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[513] | 398 | rotate_xyphase - rotate XY phase of cross correlation |
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| 399 | rotate_linpolphase - rotate the phase of the complex |
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| 400 | polarization O=Q+iU correlation |
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[733] | 401 | freq_switch - perform frequency switching on the data |
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| 402 | stats - Determine the specified statistic, e.g. 'min' |
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| 403 | 'max', 'rms' etc. |
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| 404 | stddev - Determine the standard deviation of the current |
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| 405 | beam/if/pol |
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[1014] | 406 | [Selection] |
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| 407 | selector - a selection object to set a subset of a scantable |
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| 408 | set_scans - set (a list of) scans by index |
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| 409 | set_cycles - set (a list of) cycles by index |
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| 410 | set_beams - set (a list of) beamss by index |
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| 411 | set_ifs - set (a list of) ifs by index |
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| 412 | set_polarisations - set (a list of) polarisations by name |
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| 413 | or by index |
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| 414 | set_names - set a selection by name (wildcards allowed) |
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| 415 | set_tsys - set a selection by tsys thresholds |
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| 416 | reset - unset all selections |
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| 417 | + - merge to selections |
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[733] | 418 | |
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[513] | 419 | [Math] Mainly functions which operate on more than one scantable |
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[100] | 420 | |
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[706] | 421 | average_time - return the (weighted) time average |
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[513] | 422 | of a list of scans |
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| 423 | quotient - return the on/off quotient |
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| 424 | simple_math - simple mathematical operations on two scantables, |
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| 425 | 'add', 'sub', 'mul', 'div' |
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[1069] | 426 | quotient - build quotient of the given on and off scans |
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| 427 | (matched pairs and 1 off/n on are valid) |
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| 428 | |
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[513] | 429 | [Fitting] |
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[113] | 430 | fitter |
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| 431 | auto_fit - return a scan where the function is |
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| 432 | applied to all Beams/IFs/Pols. |
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| 433 | commit - return a new scan where the fits have been |
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| 434 | commited. |
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| 435 | fit - execute the actual fitting process |
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[984] | 436 | store_fit - store the fit parameters in the data (scantable) |
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[113] | 437 | get_chi2 - get the Chi^2 |
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| 438 | set_scan - set the scantable to be fit |
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| 439 | set_function - set the fitting function |
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| 440 | set_parameters - set the parameters for the function(s), and |
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| 441 | set if they should be held fixed during fitting |
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[513] | 442 | set_gauss_parameters - same as above but specialised for individual |
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| 443 | gaussian components |
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[113] | 444 | get_parameters - get the fitted parameters |
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[513] | 445 | plot - plot the resulting fit and/or components and |
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| 446 | residual |
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[210] | 447 | [Plotter] |
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| 448 | asapplotter - a plotter for asap, default plotter is |
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| 449 | called 'plotter' |
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[984] | 450 | plot - plot a scantable |
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[378] | 451 | save - save the plot to a file ('png' ,'ps' or 'eps') |
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[210] | 452 | set_mode - set the state of the plotter, i.e. |
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| 453 | what is to be plotted 'colour stacked' |
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| 454 | and what 'panelled' |
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[984] | 455 | set_selection - only plot a selected part of the data |
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[733] | 456 | set_range - set a 'zoom' window [xmin,xmax,ymin,ymax] |
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[255] | 457 | set_legend - specify user labels for the legend indeces |
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| 458 | set_title - specify user labels for the panel indeces |
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[733] | 459 | set_abcissa - specify a user label for the abcissa |
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[255] | 460 | set_ordinate - specify a user label for the ordinate |
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[378] | 461 | set_layout - specify the multi-panel layout (rows,cols) |
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[733] | 462 | set_colors - specify a set of colours to use |
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| 463 | set_linestyles - specify a set of linestyles to use if only |
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| 464 | using one color |
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[1054] | 465 | set_histogram - plot in historam style |
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[733] | 466 | set_mask - set a plotting mask for a specific polarization |
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[706] | 467 | |
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[182] | 468 | [Reading files] |
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| 469 | reader - access rpfits/sdfits files |
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[984] | 470 | open - attach reader to a file |
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| 471 | close - detach reader from file |
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[182] | 472 | read - read in integrations |
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| 473 | summary - list info about all integrations |
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| 474 | |
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[113] | 475 | [General] |
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| 476 | commands - this command |
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| 477 | print - print details about a variable |
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| 478 | list_scans - list all scantables created bt the user |
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[992] | 479 | list_files - list all files readable by asap (default rpf) |
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[113] | 480 | del - delete the given variable from memory |
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| 481 | range - create a list of values, e.g. |
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| 482 | range(3) = [0,1,2], range(2,5) = [2,3,4] |
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| 483 | help - print help for one of the listed functions |
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| 484 | execfile - execute an asap script, e.g. execfile('myscript') |
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[255] | 485 | list_rcparameters - print out a list of possible values to be |
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[274] | 486 | put into $HOME/.asaprc |
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[466] | 487 | mask_and,mask_or, |
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| 488 | mask_not - boolean operations on masks created with |
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| 489 | scantable.create_mask |
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[706] | 490 | |
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[210] | 491 | Note: |
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| 492 | How to use this with help: |
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| 493 | # function 'summary' |
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| 494 | [xxx] is just a category |
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| 495 | Every 'sub-level' in this list should be replaces by a '.' Period when |
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[706] | 496 | using help |
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[210] | 497 | Example: |
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| 498 | ASAP> help scantable # to get info on ths scantable |
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| 499 | ASAP> help scantable.summary # to get help on the scantable's |
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| 500 | ASAP> help average_time |
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| 501 | |
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[715] | 502 | """ |
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| 503 | print x |
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| 504 | return |
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[113] | 505 | |
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[706] | 506 | def welcome(): |
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| 507 | return """Welcome to ASAP v%s (%s) - the ATNF Spectral Analysis Package |
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[100] | 508 | |
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[1035] | 509 | Please report any bugs via: |
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| 510 | http://sourcecode.atnf.csiro.au/cgi-bin/trac_asap.cgi/newticket |
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[100] | 511 | |
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[378] | 512 | [IMPORTANT: ASAP is 0-based] |
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[706] | 513 | Type commands() to get a list of all available ASAP commands.""" % (__version__, __date__) |
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