| [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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| 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 |
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| 56 | # plotting
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| 57 | 'plotter.stacking' : ['p', str],
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| 58 | 'plotter.panelling' : ['s', str],
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| 59 |
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| 60 | # scantable
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| 61 | 'scantable.save' : ['ASAP', str],
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| 62 | 'scantable.autoaverage' : [True, validate_bool],
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| 63 | 'scantable.freqframe' : ['LSRK', str], #default frequency frame
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| 64 | 'scantable.allaxes' : [True, validate_bool], # apply action to all axes
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| 65 | 'scantable.plotter' : [True, validate_bool], # use internal plotter
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| 66 |
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| 67 | # math
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| 68 | 'math.insitu' : [False, validate_bool],
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| 69 |
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| 70 | # fitter
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| 71 | 'fitter.polyorder' : [0, validate_int],
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| 72 | 'fitter.ncomponents' : [1, validate_int]
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| 73 | }
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| 74 |
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| 75 | def rc_params():
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| 76 | 'Return the default params updated from the values in the rc file'
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| 77 |
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| 78 | fname = asap_fname()
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| 79 |
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| 80 | if fname is None or not os.path.exists(fname):
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| 81 | message = 'could not find rc file; returning defaults'
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| 82 | ret = dict([ (key, tup[0]) for key, tup in defaultParams.items()])
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| 83 | #print message
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| 84 | return ret
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| 85 |
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| 86 | cnt = 0
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| 87 | for line in file(fname):
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| 88 | cnt +=1
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| 89 | line = line.strip()
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| 90 | if not len(line): continue
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| 91 | if line.startswith('#'): continue
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| 92 | tup = line.split(':',1)
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| 93 | if len(tup) !=2:
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| 94 | print ('Illegal line #%d\n\t%s\n\tin file "%s"' % (cnt, line, fname))
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| 95 | continue
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| 96 |
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| 97 | key, val = tup
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| 98 | key = key.strip()
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| 99 | if not defaultParams.has_key(key):
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| 100 | print ('Bad key "%s" on line %d in %s' % (key, cnt, fname))
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| 101 | continue
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| 102 |
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| 103 | default, converter = defaultParams[key]
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| 104 |
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| 105 | ind = val.find('#')
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| 106 | if ind>=0: val = val[:ind] # ignore trailing comments
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| 107 | val = val.strip()
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| 108 | try: cval = converter(val) # try to convert to proper type or raise
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| 109 | except Exception, msg:
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| 110 | 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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| 111 | continue
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| 112 | else:
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| 113 | # Alles Klar, update dict
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| 114 | defaultParams[key][0] = cval
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| 115 |
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| 116 | # strip the conveter funcs and return
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| 117 | ret = dict([ (key, tup[0]) for key, tup in defaultParams.items()])
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| 118 | verbose.report('loaded rc file %s'%fname)
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| 119 |
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| 120 | return ret
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| 121 |
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| 122 |
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| 123 | # this is the instance used by the asap classes
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| 124 | rcParams = rc_params()
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| 125 |
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| 126 | rcParamsDefault = dict(rcParams.items()) # a copy
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| 127 |
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| 128 | def rc(group, **kwargs):
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| 129 | """
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| 130 | Set the current rc params. Group is the grouping for the rc, eg
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| 131 | for lines.linewidth the group is 'lines', for axes.facecolor, the
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| 132 | group is 'axes', and so on. kwargs is a list of attribute
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| 133 | name/value pairs, eg
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| 134 |
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| 135 | rc('lines', linewidth=2, color='r')
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| 136 |
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| 137 | sets the current rc params and is equivalent to
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| 138 |
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| 139 | rcParams['lines.linewidth'] = 2
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| 140 | rcParams['lines.color'] = 'r'
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| 141 |
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| 142 |
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| 143 | Note you can use python's kwargs dictionary facility to store
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| 144 | dictionaries of default parameters. Eg, you can customize the
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| 145 | font rc as follows
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| 146 |
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| 147 | font = {'family' : 'monospace',
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| 148 | 'weight' : 'bold',
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| 149 | 'size' : 'larger',
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| 150 | }
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| 151 |
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| 152 | rc('font', **font) # pass in the font dict as kwargs
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| 153 |
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| 154 | This enables you to easily switch between several configurations.
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| 155 | Use rcdefaults to restore the default rc params after changes.
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| 156 | """
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| 157 |
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| 158 | aliases = {
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| 159 | }
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| 160 |
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| 161 | for k,v in kwargs.items():
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| 162 | name = aliases.get(k) or k
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| 163 | key = '%s.%s' % (group, name)
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| 164 | if not rcParams.has_key(key):
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| 165 | raise KeyError('Unrecognized key "%s" for group "%s" and name "%s"' % (key, group, name))
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| 166 |
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| 167 | rcParams[key] = v
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| 168 |
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| 169 |
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| 170 | def rcdefaults():
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| 171 | """
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| 172 | Restore the default rc params - the ones that were created at
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| 173 | asap load time
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| 174 | """
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| 175 | rcParams.update(rcParamsDefault)
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| 176 |
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| [113] | 177 | from asapfitter import *
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| [100] | 178 | from asapreader import reader
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| 179 | from asapmath import *
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| 180 | from scantable import *
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| [226] | 181 | if rcParams['useplotter']:
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| 182 | print "Initialising plotter..."
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| 183 | from asapplotter import *
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| 184 | plotter = asapplotter()
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| [100] | 185 | #from numarray ones,zeros
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| 186 |
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| 187 | __date__ = '$Date: 2005-01-21 01:28:57 +0000 (Fri, 21 Jan 2005) $'
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| 188 | __version__ = '0.1a'
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| 189 |
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| 190 | def list_scans(t = scantable):
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| 191 | import sys, types
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| 192 | #meta_t = type(t)
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| 193 | #if meta_t == types.InstanceType:
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| 194 | # t = t.__class__
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| 195 | #elif meta_t not in [types.ClassType, types.TypeType]:
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| 196 | # t = meta_t
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| 197 | globs = sys.modules['__main__'].__dict__.iteritems()
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| [113] | 198 | print "The user created scantables are:"
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| 199 | x = map(lambda x: x[0], filter(lambda x: isinstance(x[1], t), globs))
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| 200 | print x
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| [100] | 201 |
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| [113] | 202 | def commands():
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| [210] | 203 | x = """
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| [113] | 204 | [The scan container]
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| 205 | scantable - a container for integrations/scans
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| [182] | 206 | (can open asap/rpfits/sdfits and ms files)
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| [113] | 207 | copy - returns a copy of a scan
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| 208 | get_scan - gets a specific scan out of a scantable
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| 209 | summary - print info about the scantable contents
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| 210 | set_selection - set a specific Beam/IF/Pol for furthrt use
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| 211 | get_selection - print out the current selection
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| [182] | 212 | stats - get specified statistic of the spectra in
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| 213 | the scantable
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| 214 | stddev - get the standard deviation of the spectra
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| 215 | in the scantable
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| [113] | 216 | get_tsys - get the TSys
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| 217 | get_time - get the timestamps of the integrations
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| 218 | set_unit - set the units to be used from this point on
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| 219 | set_freqframe - set the frame info for the Spectral Axis
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| 220 | (e.g. 'LSRK')
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| [240] | 221 | set_instrument - set the instrument name
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| 222 | set_fluxunit - set the brightness flux unit
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| [188] | 223 | create_mask - return an mask in the current unit
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| 224 | for the given region. The specified regions
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| 225 | are NOT masked
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| [113] | 226 | set_restfreqs - give a list of rest frequencies
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| 227 | flag_spectrum - flag a whole Beam/IF/Pol
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| [116] | 228 | save - save the scantable to disk as either 'ASAP'
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| 229 | or 'SDFITS'
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| [113] | 230 | nbeam,nif,nchan,npol - the number of beams/IFs/Pols/Chans
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| 231 | [Math]
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| [142] | 232 | average_time - return the (weighted) time average of a scan
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| 233 | or a list of scans
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| [128] | 234 | average_pol - average the polarisations together.
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| [113] | 235 | The dimension won't be reduced and
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| 236 | all polarisations will contain the
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| 237 | averaged spectrum.
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| 238 | quotient - return the on/off quotient
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| [240] | 239 | b_operate - simple mathematical operations on two scan tables
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| [113] | 240 | scale - returns a scan scaled by a given factor
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| [149] | 241 | add - returns a scan with given value added
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| [113] | 242 | bin - return a scan with binned channels
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| [179] | 243 | smooth - return the spectrally smoothed scan
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| [113] | 244 | poly_baseline - fit a polynomial baseline to all Beams/IFs/Pols
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| [240] | 245 | gain_el - apply gain-elevation correction
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| 246 | opacity - apply opacity correction
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| 247 | convert_flux - convert to and from Jy and Kelvin brightness units
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| [100] | 248 |
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| [113] | 249 | fitter
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| 250 | auto_fit - return a scan where the function is
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| 251 | applied to all Beams/IFs/Pols.
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| 252 | commit - return a new scan where the fits have been
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| 253 | commited.
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| 254 | fit - execute the actual fitting process
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| 255 | get_chi2 - get the Chi^2
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| 256 | set_scan - set the scantable to be fit
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| 257 | set_function - set the fitting function
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| 258 | set_parameters - set the parameters for the function(s), and
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| 259 | set if they should be held fixed during fitting
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| 260 | get_parameters - get the fitted parameters
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| [210] | 261 | [Plotter]
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| 262 | asapplotter - a plotter for asap, default plotter is
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| 263 | called 'plotter'
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| 264 | plot - plot a (list of) scantable
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| 265 | set_mode - set the state of the plotter, i.e.
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| 266 | what is to be plotted 'colour stacked'
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| 267 | and what 'panelled'
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| 268 | set_range - set the abcissa 'zoom' range
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| 269 | set_legend_map - specify user labels for the legend indeces
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| 270 |
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| [182] | 271 | [Reading files]
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| 272 | reader - access rpfits/sdfits files
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| 273 | read - read in integrations
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| 274 | summary - list info about all integrations
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| 275 |
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| [113] | 276 | [General]
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| 277 | commands - this command
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| 278 | print - print details about a variable
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| 279 | list_scans - list all scantables created bt the user
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| 280 | del - delete the given variable from memory
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| 281 | range - create a list of values, e.g.
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| 282 | range(3) = [0,1,2], range(2,5) = [2,3,4]
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| 283 | help - print help for one of the listed functions
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| 284 | execfile - execute an asap script, e.g. execfile('myscript')
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| [210] | 285 | Note:
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| 286 | How to use this with help:
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| 287 | # function 'summary'
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| 288 | [xxx] is just a category
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| 289 | Every 'sub-level' in this list should be replaces by a '.' Period when
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| 290 | using help
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| 291 | Example:
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| 292 | ASAP> help scantable # to get info on ths scantable
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| 293 | ASAP> help scantable.summary # to get help on the scantable's
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| 294 | ASAP> help average_time
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| 295 |
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| [113] | 296 | """
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| 297 | print x
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| 298 | return
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| 299 |
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| 300 | print """Welcome to ASAP - the ATNF Single Dish Analysis Package
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| [100] | 301 | This is a testing pre-release v0.1a
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| 302 |
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| 303 | Please report any bugs to:
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| [128] | 304 | Malte.Marquarding@csiro.au
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| [100] | 305 |
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| [113] | 306 | [NOTE: ASAP is 0-based]
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| 307 | Type commands() to get a list of all available ASAP commands.
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| [100] | 308 | """
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