source: branches/newfiller/python/linecatalog.py@ 2713

Last change on this file since 2713 was 1614, checked in by Takeshi Nakazato, 15 years ago

New Development: No

JIRA Issue: Yes CAS-729, CAS-1147

Ready to Release: Yes

Interface Changes: No

What Interface Changed: Please list interface changes

Test Programs: List test programs

Put in Release Notes: No

Module(s): Module Names change impacts.

Description: Describe your changes here...

  1. Added level parameter to print_log()
  2. Replaced casalog.post() to asaplog.push() + print_log().


  • Property svn:keywords set to Date Revision
File size: 4.2 KB
Line 
1"""
2A representation of a spectral line catalog.
3
4Author: Malte Marquarding
5
6"""
7__revision__ = "$Revision: 1614 $"
8from asap._asap import linecatalog as lcbase
9from asap import rcParams
10from asap import asaplog
11import os
12
13class linecatalog(lcbase):
14 """
15 This class is a warpper for line catalogs. These can be either ASCII tables
16 or the tables saved from this class.
17 ASCII tables have the following restrictions:
18 Comments can be present through lines starting with '#'.
19 The first column contains the name of the Molecule. This can't contain spaces,
20 if it does it has to be wrapped in ""
21 The second column contains the frequency of the transition.
22 The third column contains the error in frequency.
23 The fourth column contains a value describing the intensity
24 """
25
26 def __init__(self, name):
27 fpath = os.path.abspath(os.path.expandvars(os.path.expanduser(name)))
28 if os.path.exists(fpath):
29 lcbase.__init__(self, fpath)
30 else:
31 msg = "File '%s' not found" % fpath
32 if rcParams['verbose']:
33 #print msg
34 asaplog.push( msg )
35 print_log( 'ERROR' )
36 return
37 else:
38 raise IOError(msg)
39
40 def __repr__(self):
41 return lcbase.summary(self, -1)
42
43 def summary(self):
44 """
45 Print the contents of the table.
46 """
47 try:
48 from IPython.genutils import page as pager
49 except ImportError:
50 from pydoc import pager
51 pager(lcbase.summary(self, -1))
52
53 def set_name(self, name, mode="pattern"):
54 """
55 Set a name restriction on the table. This can be a standard unix-style
56 pattern or a regular expression.
57 Parameters:
58 name: the name patterrn/regex
59 mode: the matching mode, i.e. "pattern" (default) or "regex"
60 """
61 validmodes = "pattern regex".split()
62 if not mode.lower() in validmodes:
63 return
64 lcbase.set_name(self, name, mode)
65
66 def set_frequency_limits(self, fmin=1.0, fmax=120.0, unit="GHz"):
67 """
68 Set frequency limits on the table.
69 Parameters:
70 fmin: the lower bound
71 fmax: the upper bound
72 unit: the frequency unit (default "GHz")
73
74 Note:
75 The underlying table conatins frequency values in MHz
76 """
77 base = { "GHz": 1000.0, "MHz": 1.0 }
78 if not base.has_key(unit):
79 raise ValueError("%s is not a valid unit." % unit)
80 # the table conatins values in MHz
81 lcbase.set_frequency_limits(self, fmin*base[unit], fmax*base[unit])
82
83 def set_strength_limits(self, smin, smax):
84 """
85 Set line strength limits on the table (arbitrary units)
86 Parameters:
87 smin: the lower bound
88 smax: the upper bound
89 """
90 lcbase.set_strength_limits(self, smin, smax)
91
92 def save(self, name, overwrite=False):
93 """
94 Save the subset of the table to disk. This uses an internal data format
95 and can be read in again.
96 """
97 name = os.path.expanduser(os.path.expandvars(name))
98 if os.path.isfile(name) or os.path.isdir(name):
99 if not overwrite:
100 msg = "File %s exists." % name
101 if rcParams['verbose']:
102 #print msg
103 asaplog.push( msg )
104 print_log( 'ERROR' )
105 return
106 else:
107 raise IOError(msg)
108 lcbase.save(self, name)
109
110 def reset(self):
111 """
112 Reset the table to its initial state, i.e. undo all calls to set_
113 """
114 lcbase.reset(self)
115
116 def get_row(self, row=0):
117 """
118 Get the values in a specified row of the table.
119 Parameters:
120 row: the row to retrieve
121 """
122 freq = lcbase.get_frequency(self, row)
123 name = lcbase.get_name(self, row)
124 return { 'name':name, 'value': freq }
125
126 def __len__(self):
127 return self.nrow()
128
129 def __getitem__(self, k):
130 if k < 0: k = self.nrow()-k
131 return self.get_row(k)
132
133
134
135
136
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