Source Code for Module mvpa.misc.bv.base

 1  # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*- 
 2  # vi: set ft=python sts=4 ts=4 sw=4 et: 
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 4  # 
 5  #   See COPYING file distributed along with the PyMVPA package for the 
 6  #   copyright and license terms. 
 7  # 
 8  ### ### ### ### ### ### ### ### ### ### ### ### ### ### ### ### ### ### ### ## 
 9  """Tiny snippets to interface with FSL easily.""" 
10   
11  __docformat__ = 'restructuredtext' 
12   
13  from mvpa.misc.io import ColumnData 
14   
15  if __debug__: 
16      from mvpa.base import debug 
17   
18   
19 -class BrainVoyagerRTC(ColumnData): 
20      """IO helper to read BrainVoyager RTC files. 
21   
22      This is a textfile format that is used to specify stimulation 
23      protocols for data analysis in BrainVoyager. It looks like 
24   
25      FileVersion:     2 
26      Type:            DesignMatrix 
27      NrOfPredictors:  4 
28      NrOfDataPoints:  147 
29   
30      "fm_l_60dB" "fm_r_60dB" "fm_l_80dB" "fm_r_80dB" 
31      0.000000 0.000000 0.000000 0.000000 
32      0.000000 0.000000 0.000000 0.000000 
33      0.000000 0.000000 0.000000 0.000000 
34   
35      Data is always read as `float` and header is actually ignored 
36      """ 
37 -    def __init__(self, source): 
38          """Read and write BrainVoyager RTC files. 
39   
40          :Parameter: 
41            source: filename of an RTC file 
42          """ 
43          # init data from known format 
44          ColumnData.__init__(self, source, header=True, 
45                              sep=None, headersep='"', dtype=float, skiplines=5) 
46   
47   
48 -    def toarray(self): 
49          """Returns the data as an array 
50          """ 
51          import numpy as N 
52   
53          # return as array with time axis first 
54          return N.array([self[i] for i in self._header_order], 
55                         dtype='float').T 
56