| 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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| 5 | import os,sys
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| 6 |
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| 7 | def validate_bool(b):
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| 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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| 15 | def validate_int(s):
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| 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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| 21 | def asap_fname():
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| 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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| 29 | * HOME/.matplotlibrc
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| 30 |
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| 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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| 50 |
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| 51 | defaultParams = {
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| 52 | # general
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| 53 | 'verbose' : [True, validate_bool],
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| 54 | 'useplotter' : [True, validate_bool],
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| 55 | 'insitu' : [False, validate_bool],
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| 56 |
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| 57 | # plotting
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| 58 | 'plotter.stacking' : ['p', str],
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| 59 | 'plotter.panelling' : ['s', str],
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| 60 |
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| 61 | # scantable
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| 62 | 'scantable.save' : ['ASAP', str],
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| 63 | 'scantable.autoaverage' : [True, validate_bool],
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| 64 | 'scantable.freqframe' : ['LSRK', str], #default frequency frame
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| 65 | 'scantable.allaxes' : [True, validate_bool], # apply action to all axes
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| 66 | 'scantable.plotter' : [True, validate_bool], # use internal plotter
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| 67 |
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| 68 | # fitter
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| 69 | }
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| 70 |
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| 71 | def list_rcparameters():
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| 72 |
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| 73 | print """
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| 74 | # general
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| 75 | # print verbose output
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| 76 | 'verbose' : True
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| 77 |
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| 78 | # preload a default plotter
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| 79 | 'useplotter' : True
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| 80 |
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| 81 | # apply operations on the input scantable or return new one
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| 82 | 'insitu' : False
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| 83 |
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| 84 | # plotting
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| 85 | # default mode for colour stacking
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| 86 | 'plotter.stacking' : 'Pol'
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| 87 |
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| 88 | # default mode for panelling
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| 89 | 'plotter.panelling' : 'scan'
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| 90 |
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| 91 | # scantable
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| 92 | # default ouput format when saving
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| 93 | 'scantable.save' : 'ASAP'
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| 94 | # auto averaging on read
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| 95 | 'scantable.autoaverage' : True
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| 96 |
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| 97 | # default frequency frame to set when function
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| 98 | # scantable.set_freqfrmae is called
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| 99 | 'scantable.freqframe' : 'LSRK'
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| 100 |
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| 101 | # apply action to all axes not just the cursor location
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| 102 | 'scantable.allaxes' : True
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| 103 |
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| 104 | # use internal plotter
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| 105 | 'scantable.plotter' : True
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| 106 |
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| 107 | # Fitter
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| 108 | """
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| 109 |
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| 110 | def rc_params():
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| 111 | 'Return the default params updated from the values in the rc file'
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| 112 |
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| 113 | fname = asap_fname()
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| 114 |
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| 115 | if fname is None or not os.path.exists(fname):
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| 116 | message = 'could not find rc file; returning defaults'
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| 117 | ret = dict([ (key, tup[0]) for key, tup in defaultParams.items()])
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| 118 | #print message
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| 119 | return ret
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| 120 |
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| 121 | cnt = 0
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| 122 | for line in file(fname):
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| 123 | cnt +=1
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| 124 | line = line.strip()
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| 125 | if not len(line): continue
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| 126 | if line.startswith('#'): continue
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| 127 | tup = line.split(':',1)
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| 128 | if len(tup) !=2:
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| 129 | print ('Illegal line #%d\n\t%s\n\tin file "%s"' % (cnt, line, fname))
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| 130 | continue
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| 131 |
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| 132 | key, val = tup
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| 133 | key = key.strip()
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| 134 | if not defaultParams.has_key(key):
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| 135 | print ('Bad key "%s" on line %d in %s' % (key, cnt, fname))
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| 136 | continue
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| 137 |
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| 138 | default, converter = defaultParams[key]
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| 139 |
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| 140 | ind = val.find('#')
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| 141 | if ind>=0: val = val[:ind] # ignore trailing comments
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| 142 | val = val.strip()
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| 143 | try: cval = converter(val) # try to convert to proper type or raise
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| 144 | except Exception, msg:
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| 145 | 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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| 146 | continue
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| 147 | else:
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| 148 | # Alles Klar, update dict
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| 149 | defaultParams[key][0] = cval
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| 150 |
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| 151 | # strip the conveter funcs and return
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| 152 | ret = dict([ (key, tup[0]) for key, tup in defaultParams.items()])
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| 153 | print 'Using rc file %s'%fname
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| 154 |
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| 155 | return ret
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| 156 |
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| 157 |
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| 158 | # this is the instance used by the asap classes
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| 159 | rcParams = rc_params()
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| 160 |
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| 161 | rcParamsDefault = dict(rcParams.items()) # a copy
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| 162 |
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| 163 | def rc(group, **kwargs):
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| 164 | """
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| 165 | Set the current rc params. Group is the grouping for the rc, eg
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| 166 | for lines.linewidth the group is 'lines', for axes.facecolor, the
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| 167 | group is 'axes', and so on. kwargs is a list of attribute
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| 168 | name/value pairs, eg
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| 169 |
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| 170 | rc('lines', linewidth=2, color='r')
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| 171 |
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| 172 | sets the current rc params and is equivalent to
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| 173 |
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| 174 | rcParams['lines.linewidth'] = 2
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| 175 | rcParams['lines.color'] = 'r'
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| 176 |
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| 177 |
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| 178 | Note you can use python's kwargs dictionary facility to store
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| 179 | dictionaries of default parameters. Eg, you can customize the
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| 180 | font rc as follows
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| 181 |
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| 182 | font = {'family' : 'monospace',
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| 183 | 'weight' : 'bold',
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| 184 | 'size' : 'larger',
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| 185 | }
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| 186 |
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| 187 | rc('font', **font) # pass in the font dict as kwargs
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| 188 |
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| 189 | This enables you to easily switch between several configurations.
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| 190 | Use rcdefaults to restore the default rc params after changes.
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| 191 | """
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| 192 |
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| 193 | aliases = {
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| 194 | }
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| 195 |
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| 196 | for k,v in kwargs.items():
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| 197 | name = aliases.get(k) or k
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| 198 | key = '%s.%s' % (group, name)
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| 199 | if not rcParams.has_key(key):
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| 200 | raise KeyError('Unrecognized key "%s" for group "%s" and name "%s"' % (key, group, name))
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| 201 |
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| 202 | rcParams[key] = v
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| 203 |
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| 204 |
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| 205 | def rcdefaults():
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| 206 | """
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| 207 | Restore the default rc params - the ones that were created at
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| 208 | asap load time
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| 209 | """
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| 210 | rcParams.update(rcParamsDefault)
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| 211 |
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| 212 | from asapfitter import *
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| 213 | from asapreader import reader
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| 214 | from asapmath import *
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| 215 | from scantable import *
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| 216 | if rcParams['useplotter']:
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| 217 | print "Initialising plotter..."
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| 218 | import asapplotter
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| 219 | plotter = asapplotter.asapplotter()
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| 220 |
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| 221 | __date__ = '$Date: 2005-01-21 11:22:46 +0000 (Fri, 21 Jan 2005) $'
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| 222 | __version__ = '0.2a'
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| 223 |
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| 224 | def list_scans(t = scantable):
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| 225 | import sys, types
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| 226 | #meta_t = type(t)
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| 227 | #if meta_t == types.InstanceType:
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| 228 | # t = t.__class__
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| 229 | #elif meta_t not in [types.ClassType, types.TypeType]:
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| 230 | # t = meta_t
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| 231 | globs = sys.modules['__main__'].__dict__.iteritems()
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| 232 | print "The user created scantables are:"
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| 233 | x = map(lambda x: x[0], filter(lambda x: isinstance(x[1], t), globs))
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| 234 | print x
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| 235 |
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| 236 | def commands():
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| 237 | x = """
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| 238 | [The scan container]
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| 239 | scantable - a container for integrations/scans
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| 240 | (can open asap/rpfits/sdfits and ms files)
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| 241 | copy - returns a copy of a scan
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| 242 | get_scan - gets a specific scan out of a scantable
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| 243 | summary - print info about the scantable contents
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| 244 | set_cursor - set a specific Beam/IF/Pol 'cursor' for
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| 245 | further use
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| 246 | get_cursor - print out the current cursor position
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| 247 | stats - get specified statistic of the spectra in
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| 248 | the scantable
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| 249 | stddev - get the standard deviation of the spectra
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| 250 | in the scantable
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| 251 | get_tsys - get the TSys
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| 252 | get_time - get the timestamps of the integrations
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| 253 | get_unit - get the currnt unit
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| 254 | set_unit - set the unit to be used from this point on
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| 255 | get_abcissa - get the abcissa values and name for a given
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| 256 | row (time)
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| 257 | set_freqframe - set the frame info for the Spectral Axis
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| 258 | (e.g. 'LSRK')
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| 259 | set_instrument - set the instrument name
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| 260 | get_fluxunit - get the brightness flux unit
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| 261 | set_fluxunit - set the brightness flux unit
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| 262 | create_mask - return an mask in the current unit
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| 263 | for the given region. The specified regions
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| 264 | are NOT masked
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| 265 | get_restfreqs - get the current list of rest frequencies
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| 266 | set_restfreqs - set a list of rest frequencies
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| 267 | flag_spectrum - flag a whole Beam/IF/Pol
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| 268 | save - save the scantable to disk as either 'ASAP'
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| 269 | or 'SDFITS'
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| 270 | nbeam,nif,nchan,npol - the number of beams/IFs/Pols/Chans
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| 271 | [Math]
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| 272 | average_time - return the (weighted) time average of a scan
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| 273 | or a list of scans
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| 274 | average_pol - average the polarisations together.
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| 275 | The dimension won't be reduced and
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| 276 | all polarisations will contain the
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| 277 | averaged spectrum.
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| 278 | quotient - return the on/off quotient
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| 279 | simple_math - simple mathematical operations on two scantables,
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| 280 | 'add', 'sub', 'mul', 'div'
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| 281 | scale - returns a scan scaled by a given factor
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| 282 | add - returns a scan with given value added
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| 283 | bin - return a scan with binned channels
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| 284 | smooth - return the spectrally smoothed scan
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| 285 | poly_baseline - fit a polynomial baseline to all Beams/IFs/Pols
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| 286 | gain_el - apply gain-elevation correction
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| 287 | opacity - apply opacity correction
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| 288 | convert_flux - convert to and from Jy and Kelvin brightness
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| 289 | units
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| 290 |
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| 291 | fitter
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| 292 | auto_fit - return a scan where the function is
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| 293 | applied to all Beams/IFs/Pols.
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| 294 | commit - return a new scan where the fits have been
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| 295 | commited.
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| 296 | fit - execute the actual fitting process
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| 297 | get_chi2 - get the Chi^2
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| 298 | set_scan - set the scantable to be fit
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| 299 | set_function - set the fitting function
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| 300 | set_parameters - set the parameters for the function(s), and
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| 301 | set if they should be held fixed during fitting
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| 302 | get_parameters - get the fitted parameters
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| 303 | [Plotter]
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| 304 | asapplotter - a plotter for asap, default plotter is
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| 305 | called 'plotter'
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| 306 | plot - plot a (list of) scantable
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| 307 | set_mode - set the state of the plotter, i.e.
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| 308 | what is to be plotted 'colour stacked'
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| 309 | and what 'panelled'
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| 310 | set_range - set the abcissa 'zoom' range
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| 311 | set_legend - specify user labels for the legend indeces
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| 312 | set_title - specify user labels for the panel indeces
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| 313 | set_ordinate - specify a user label for the ordinate
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| 314 | set_abcissa - specify a user label for the abcissa
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| 315 |
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| 316 | [Reading files]
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| 317 | reader - access rpfits/sdfits files
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| 318 | read - read in integrations
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| 319 | summary - list info about all integrations
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| 320 |
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| 321 | [General]
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| 322 | commands - this command
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| 323 | print - print details about a variable
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| 324 | list_scans - list all scantables created bt the user
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| 325 | del - delete the given variable from memory
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| 326 | range - create a list of values, e.g.
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| 327 | range(3) = [0,1,2], range(2,5) = [2,3,4]
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| 328 | help - print help for one of the listed functions
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| 329 | execfile - execute an asap script, e.g. execfile('myscript')
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| 330 | list_rcparameters - print out a list of possible values to be
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| 331 | put into .asaprc
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| 332 | Note:
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| 333 | How to use this with help:
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| 334 | # function 'summary'
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| 335 | [xxx] is just a category
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| 336 | Every 'sub-level' in this list should be replaces by a '.' Period when
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| 337 | using help
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| 338 | Example:
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| 339 | ASAP> help scantable # to get info on ths scantable
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| 340 | ASAP> help scantable.summary # to get help on the scantable's
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| 341 | ASAP> help average_time
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| 342 |
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| 343 | """
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| 344 | print x
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| 345 | return
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| 346 |
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| 347 | print """Welcome to ASAP - the ATNF Single Dish Analysis Package
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| 348 | This is a testing pre-release v0.1a
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| 349 |
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| 350 | Please report any bugs to:
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| 351 | Malte.Marquarding@csiro.au
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| 352 |
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| 353 | [NOTE: ASAP is 0-based]
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| 354 | Type commands() to get a list of all available ASAP commands.
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| 355 | """
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