[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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| 65 | |
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[226] | 66 | # scantable |
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| 67 | 'scantable.save' : ['ASAP', str], |
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[513] | 68 | 'scantable.autoaverage' : [True, _validate_bool], |
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[226] | 69 | 'scantable.freqframe' : ['LSRK', str], #default frequency frame |
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[513] | 70 | 'scantable.plotter' : [True, _validate_bool], # use internal plotter |
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| 71 | 'scantable.verbosesummary' : [False, _validate_bool] |
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[226] | 72 | |
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| 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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[737] | 111 | # scantable |
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| 112 | # default ouput format when saving |
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| 113 | scantable.save : ASAP |
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| 114 | # auto averaging on read |
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| 115 | scantable.autoaverage : True |
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[255] | 116 | |
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[737] | 117 | # default frequency frame to set when function |
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| 118 | # scantable.set_freqfrmae is called |
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| 119 | scantable.freqframe : LSRK |
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[255] | 120 | |
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[737] | 121 | # Control the level of information printed by summary |
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| 122 | scantable.verbosesummary : False |
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[706] | 123 | |
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[737] | 124 | # Fitter |
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| 125 | """ |
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[706] | 126 | |
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[226] | 127 | def rc_params(): |
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| 128 | 'Return the default params updated from the values in the rc file' |
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[706] | 129 | |
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[513] | 130 | fname = _asap_fname() |
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[706] | 131 | |
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[226] | 132 | if fname is None or not os.path.exists(fname): |
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| 133 | message = 'could not find rc file; returning defaults' |
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| 134 | ret = dict([ (key, tup[0]) for key, tup in defaultParams.items()]) |
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| 135 | #print message |
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| 136 | return ret |
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[706] | 137 | |
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[226] | 138 | cnt = 0 |
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| 139 | for line in file(fname): |
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| 140 | cnt +=1 |
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| 141 | line = line.strip() |
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| 142 | if not len(line): continue |
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| 143 | if line.startswith('#'): continue |
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| 144 | tup = line.split(':',1) |
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| 145 | if len(tup) !=2: |
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| 146 | print ('Illegal line #%d\n\t%s\n\tin file "%s"' % (cnt, line, fname)) |
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| 147 | continue |
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[706] | 148 | |
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[226] | 149 | key, val = tup |
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| 150 | key = key.strip() |
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| 151 | if not defaultParams.has_key(key): |
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| 152 | print ('Bad key "%s" on line %d in %s' % (key, cnt, fname)) |
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| 153 | continue |
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[706] | 154 | |
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[226] | 155 | default, converter = defaultParams[key] |
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| 156 | |
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| 157 | ind = val.find('#') |
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| 158 | if ind>=0: val = val[:ind] # ignore trailing comments |
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| 159 | val = val.strip() |
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| 160 | try: cval = converter(val) # try to convert to proper type or raise |
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| 161 | except Exception, msg: |
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| 162 | 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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| 163 | continue |
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| 164 | else: |
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| 165 | # Alles Klar, update dict |
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| 166 | defaultParams[key][0] = cval |
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| 167 | |
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| 168 | # strip the conveter funcs and return |
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| 169 | ret = dict([ (key, tup[0]) for key, tup in defaultParams.items()]) |
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[466] | 170 | print ('loaded rc file %s'%fname) |
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[226] | 171 | |
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| 172 | return ret |
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| 173 | |
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| 174 | |
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| 175 | # this is the instance used by the asap classes |
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[706] | 176 | rcParams = rc_params() |
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[226] | 177 | |
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| 178 | rcParamsDefault = dict(rcParams.items()) # a copy |
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| 179 | |
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| 180 | def rc(group, **kwargs): |
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| 181 | """ |
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| 182 | Set the current rc params. Group is the grouping for the rc, eg |
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[379] | 183 | for scantable.save the group is 'scantable', for plotter.stacking, the |
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| 184 | group is 'plotter', and so on. kwargs is a list of attribute |
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[226] | 185 | name/value pairs, eg |
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| 186 | |
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[379] | 187 | rc('scantable', save='SDFITS') |
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[226] | 188 | |
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| 189 | sets the current rc params and is equivalent to |
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[706] | 190 | |
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[379] | 191 | rcParams['scantable.save'] = 'SDFITS' |
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[226] | 192 | |
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| 193 | Use rcdefaults to restore the default rc params after changes. |
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| 194 | """ |
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| 195 | |
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[379] | 196 | aliases = {} |
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[706] | 197 | |
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[226] | 198 | for k,v in kwargs.items(): |
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| 199 | name = aliases.get(k) or k |
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| 200 | key = '%s.%s' % (group, name) |
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| 201 | if not rcParams.has_key(key): |
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| 202 | raise KeyError('Unrecognized key "%s" for group "%s" and name "%s"' % (key, group, name)) |
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[706] | 203 | |
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[226] | 204 | rcParams[key] = v |
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| 205 | |
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| 206 | |
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| 207 | def rcdefaults(): |
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| 208 | """ |
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| 209 | Restore the default rc params - the ones that were created at |
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| 210 | asap load time |
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| 211 | """ |
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| 212 | rcParams.update(rcParamsDefault) |
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| 213 | |
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[513] | 214 | |
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| 215 | def _is_sequence_or_number(param, ptype=int): |
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| 216 | if isinstance(param,tuple) or isinstance(param,list): |
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| 217 | out = True |
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| 218 | for p in param: |
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| 219 | out &= isinstance(p,ptype) |
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| 220 | return out |
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| 221 | elif isinstance(param, ptype): |
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| 222 | return True |
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| 223 | return False |
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| 224 | |
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[715] | 225 | |
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| 226 | # workaround for ipython, which redirects this if banner=0 in ipythonrc |
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| 227 | sys.stdout = sys.__stdout__ |
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| 228 | sys.stderr = sys.__stderr__ |
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| 229 | |
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| 230 | # Logging |
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| 231 | from asap._asap import Log as _asaplog |
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| 232 | global asaplog |
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[710] | 233 | asaplog=_asaplog() |
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[715] | 234 | if rcParams['verbose']: |
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| 235 | asaplog.enable() |
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| 236 | else: |
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| 237 | asaplog.disable() |
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| 238 | |
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| 239 | def print_log(): |
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| 240 | log = asaplog.pop() |
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| 241 | if len(log) and rcParams['verbose']: print log |
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| 242 | return |
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| 243 | |
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[113] | 244 | from asapfitter import * |
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[895] | 245 | from asapreader import reader |
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[710] | 246 | |
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[100] | 247 | from asapmath import * |
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[880] | 248 | from scantable import * |
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| 249 | from asaplinefind import * |
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[876] | 250 | #from asapfit import * |
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[285] | 251 | |
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[466] | 252 | from numarray import logical_and as mask_and |
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| 253 | from numarray import logical_or as mask_or |
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| 254 | from numarray import logical_not as mask_not |
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| 255 | |
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[876] | 256 | # if rcParams['useplotter']: |
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| 257 | # from asapplotter import * |
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| 258 | # gui = os.environ.has_key('DISPLAY') and rcParams['plotter.gui'] |
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| 259 | # plotter = asapplotter(gui) |
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| 260 | # del gui |
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[285] | 261 | |
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[574] | 262 | __date__ = '$Date: 2006-03-08 03:29:58 +0000 (Wed, 08 Mar 2006) $'.split()[1] |
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[796] | 263 | __version__ = '2.0a' |
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[100] | 264 | |
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[706] | 265 | if rcParams['verbose']: |
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| 266 | def list_scans(t = scantable): |
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| 267 | import sys, types |
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| 268 | globs = sys.modules['__main__'].__dict__.iteritems() |
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| 269 | print "The user created scantables are:" |
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| 270 | sts = map(lambda x: x[0], filter(lambda x: isinstance(x[1], t), globs)) |
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| 271 | print filter(lambda x: not x.startswith('_'), sts) |
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| 272 | return |
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[100] | 273 | |
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[715] | 274 | def commands(): |
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| 275 | x = """ |
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[113] | 276 | [The scan container] |
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| 277 | scantable - a container for integrations/scans |
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[182] | 278 | (can open asap/rpfits/sdfits and ms files) |
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[113] | 279 | copy - returns a copy of a scan |
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| 280 | get_scan - gets a specific scan out of a scantable |
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[876] | 281 | (by name or number) [deprecated] |
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[113] | 282 | summary - print info about the scantable contents |
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[182] | 283 | stats - get specified statistic of the spectra in |
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| 284 | the scantable |
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| 285 | stddev - get the standard deviation of the spectra |
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| 286 | in the scantable |
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[113] | 287 | get_tsys - get the TSys |
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| 288 | get_time - get the timestamps of the integrations |
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[733] | 289 | get_sourcename - get the source names of the scans |
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[794] | 290 | get_azimuth - get the azimuth of the scans |
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| 291 | get_elevation - get the elevation of the scans |
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| 292 | get_parangle - get the parallactic angle of the scans |
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[876] | 293 | get_unit - get the current unit |
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[513] | 294 | set_unit - set the abcissa unit to be used from this |
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| 295 | point on |
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[255] | 296 | get_abcissa - get the abcissa values and name for a given |
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| 297 | row (time) |
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[113] | 298 | set_freqframe - set the frame info for the Spectral Axis |
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| 299 | (e.g. 'LSRK') |
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[276] | 300 | set_doppler - set the doppler to be used from this point on |
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[240] | 301 | set_instrument - set the instrument name |
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[255] | 302 | get_fluxunit - get the brightness flux unit |
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[240] | 303 | set_fluxunit - set the brightness flux unit |
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[188] | 304 | create_mask - return an mask in the current unit |
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| 305 | for the given region. The specified regions |
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| 306 | are NOT masked |
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[255] | 307 | get_restfreqs - get the current list of rest frequencies |
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| 308 | set_restfreqs - set a list of rest frequencies |
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[403] | 309 | lines - print list of known spectral lines |
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[113] | 310 | flag_spectrum - flag a whole Beam/IF/Pol |
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[116] | 311 | save - save the scantable to disk as either 'ASAP' |
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| 312 | or 'SDFITS' |
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[486] | 313 | nbeam,nif,nchan,npol - the number of beams/IFs/Pols/Chans |
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[733] | 314 | nscan - the number of scans in the scantable |
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| 315 | nrow - te number of integrations in the scantable |
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[486] | 316 | history - print the history of the scantable |
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[530] | 317 | get_fit - get a fit which has been stored witnh the data |
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[706] | 318 | average_time - return the (weighted) time average of a scan |
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[513] | 319 | or a list of scans |
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| 320 | average_pol - average the polarisations together. |
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[113] | 321 | The dimension won't be reduced and |
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| 322 | all polarisations will contain the |
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| 323 | averaged spectrum. |
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[690] | 324 | auto_quotient - return the on/off quotient with |
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| 325 | automatic detection of the on/off scans |
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[733] | 326 | (matched pairs and 1 off - n on) |
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[513] | 327 | quotient - return the on/off quotient |
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| 328 | scale - return a scan scaled by a given factor |
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[706] | 329 | add - return a scan with given value added |
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[513] | 330 | bin - return a scan with binned channels |
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| 331 | resample - return a scan with resampled channels |
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| 332 | smooth - return the spectrally smoothed scan |
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| 333 | poly_baseline - fit a polynomial baseline to all Beams/IFs/Pols |
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[706] | 334 | auto_poly_baseline - automatically fit a polynomial baseline |
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[780] | 335 | recalc_azel - recalculate azimuth and elevation based on |
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| 336 | the pointing |
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[513] | 337 | gain_el - apply gain-elevation correction |
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| 338 | opacity - apply opacity correction |
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| 339 | convert_flux - convert to and from Jy and Kelvin brightness |
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[255] | 340 | units |
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[513] | 341 | freq_align - align spectra in frequency frame |
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| 342 | rotate_xyphase - rotate XY phase of cross correlation |
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| 343 | rotate_linpolphase - rotate the phase of the complex |
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| 344 | polarization O=Q+iU correlation |
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[733] | 345 | freq_switch - perform frequency switching on the data |
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| 346 | stats - Determine the specified statistic, e.g. 'min' |
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| 347 | 'max', 'rms' etc. |
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| 348 | stddev - Determine the standard deviation of the current |
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| 349 | beam/if/pol |
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| 350 | |
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[513] | 351 | [Math] Mainly functions which operate on more than one scantable |
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[100] | 352 | |
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[706] | 353 | average_time - return the (weighted) time average |
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[513] | 354 | of a list of scans |
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| 355 | quotient - return the on/off quotient |
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| 356 | simple_math - simple mathematical operations on two scantables, |
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| 357 | 'add', 'sub', 'mul', 'div' |
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| 358 | [Fitting] |
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[113] | 359 | fitter |
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| 360 | auto_fit - return a scan where the function is |
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| 361 | applied to all Beams/IFs/Pols. |
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| 362 | commit - return a new scan where the fits have been |
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| 363 | commited. |
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| 364 | fit - execute the actual fitting process |
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[530] | 365 | store_fit - store the fit paramaters in the data (scantable) |
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[113] | 366 | get_chi2 - get the Chi^2 |
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| 367 | set_scan - set the scantable to be fit |
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| 368 | set_function - set the fitting function |
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| 369 | set_parameters - set the parameters for the function(s), and |
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| 370 | set if they should be held fixed during fitting |
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[513] | 371 | set_gauss_parameters - same as above but specialised for individual |
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| 372 | gaussian components |
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[113] | 373 | get_parameters - get the fitted parameters |
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[513] | 374 | plot - plot the resulting fit and/or components and |
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| 375 | residual |
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[210] | 376 | [Plotter] |
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| 377 | asapplotter - a plotter for asap, default plotter is |
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| 378 | called 'plotter' |
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| 379 | plot - plot a (list of) scantable |
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[378] | 380 | save - save the plot to a file ('png' ,'ps' or 'eps') |
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[210] | 381 | set_mode - set the state of the plotter, i.e. |
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| 382 | what is to be plotted 'colour stacked' |
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| 383 | and what 'panelled' |
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[530] | 384 | set_cursor - only plot a selected part of the data |
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[733] | 385 | set_range - set a 'zoom' window [xmin,xmax,ymin,ymax] |
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[255] | 386 | set_legend - specify user labels for the legend indeces |
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| 387 | set_title - specify user labels for the panel indeces |
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[733] | 388 | set_abcissa - specify a user label for the abcissa |
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[255] | 389 | set_ordinate - specify a user label for the ordinate |
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[378] | 390 | set_layout - specify the multi-panel layout (rows,cols) |
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[733] | 391 | set_colors - specify a set of colours to use |
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| 392 | set_linestyles - specify a set of linestyles to use if only |
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| 393 | using one color |
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| 394 | set_mask - set a plotting mask for a specific polarization |
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[706] | 395 | |
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[182] | 396 | [Reading files] |
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| 397 | reader - access rpfits/sdfits files |
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| 398 | read - read in integrations |
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| 399 | summary - list info about all integrations |
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| 400 | |
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[113] | 401 | [General] |
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| 402 | commands - this command |
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| 403 | print - print details about a variable |
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| 404 | list_scans - list all scantables created bt the user |
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| 405 | del - delete the given variable from memory |
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| 406 | range - create a list of values, e.g. |
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| 407 | range(3) = [0,1,2], range(2,5) = [2,3,4] |
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| 408 | help - print help for one of the listed functions |
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| 409 | execfile - execute an asap script, e.g. execfile('myscript') |
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[255] | 410 | list_rcparameters - print out a list of possible values to be |
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[274] | 411 | put into $HOME/.asaprc |
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[466] | 412 | mask_and,mask_or, |
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| 413 | mask_not - boolean operations on masks created with |
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| 414 | scantable.create_mask |
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[706] | 415 | |
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[210] | 416 | Note: |
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| 417 | How to use this with help: |
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| 418 | # function 'summary' |
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| 419 | [xxx] is just a category |
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| 420 | Every 'sub-level' in this list should be replaces by a '.' Period when |
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[706] | 421 | using help |
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[210] | 422 | Example: |
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| 423 | ASAP> help scantable # to get info on ths scantable |
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| 424 | ASAP> help scantable.summary # to get help on the scantable's |
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| 425 | ASAP> help average_time |
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| 426 | |
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[715] | 427 | """ |
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| 428 | print x |
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| 429 | return |
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[113] | 430 | |
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[706] | 431 | def welcome(): |
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| 432 | return """Welcome to ASAP v%s (%s) - the ATNF Spectral Analysis Package |
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[100] | 433 | |
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| 434 | Please report any bugs to: |
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[555] | 435 | asap@atnf.csiro.au |
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[100] | 436 | |
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[378] | 437 | [IMPORTANT: ASAP is 0-based] |
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[706] | 438 | Type commands() to get a list of all available ASAP commands.""" % (__version__, __date__) |
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