/usr/lib/python2.7/dist-packages/neo/io/winwcpio.py is in python-neo 0.3.3-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 | # -*- coding: utf-8 -*-
"""
Class for reading data from WinWCP, a software tool written by
John Dempster.
WinWCP is free:
http://spider.science.strath.ac.uk/sipbs/software.htm
Supported : Read
Author : sgarcia
"""
import os
import struct
import sys
import numpy as np
import quantities as pq
from neo.io.baseio import BaseIO
from neo.core import Block, Segment, AnalogSignal
from neo.io.tools import create_many_to_one_relationship
PY3K = (sys.version_info[0] == 3)
class WinWcpIO(BaseIO):
"""
Class for reading from a WinWCP file.
Usage:
>>> from neo import io
>>> r = io.WinWcpIO( filename = 'File_winwcp_1.wcp')
>>> bl = r.read_block(lazy = False, cascade = True,)
>>> print bl.segments # doctest: +ELLIPSIS, +NORMALIZE_WHITESPACE
[<neo.core.segment.Segment object at 0x1057bd350>, <neo.core.segment.Segment object at 0x1057bd2d0>,
...
>>> print bl.segments[0].analogsignals
[<AnalogSignal(array([-2438.73388672, -2428.96801758, -2425.61083984, ..., -2695.39453125,
...
"""
is_readable = True
is_writable = False
supported_objects = [Block, Segment , AnalogSignal ]
readable_objects = [Block]
writeable_objects = []
has_header = False
is_streameable = False
read_params = { Block : [ ], }
write_params = None
name = 'WinWCP'
extensions = [ 'wcp' ]
mode = 'file'
def __init__(self , filename = None) :
"""
This class read a WinWCP wcp file.
Arguments:
filename : the filename to read
"""
BaseIO.__init__(self)
self.filename = filename
def read_block(self , lazy = False,
cascade = True,
):
bl = Block( file_origin = os.path.basename(self.filename), )
if not cascade:
return bl
fid = open(self.filename , 'rb')
headertext = fid.read(1024)
if PY3K:
headertext = headertext.decode('ascii')
header = {}
for line in headertext.split('\r\n'):
if '=' not in line : continue
#print '#' , line , '#'
key,val = line.split('=')
if key in ['NC', 'NR','NBH','NBA','NBD','ADCMAX','NP','NZ', ] :
val = int(val)
elif key in ['AD', 'DT', ] :
val = val.replace(',','.')
val = float(val)
header[key] = val
#print header
SECTORSIZE = 512
# loop for record number
for i in range(header['NR']):
#print 'record ',i
offset = 1024 + i*(SECTORSIZE*header['NBD']+1024)
# read analysis zone
analysisHeader = HeaderReader(fid , AnalysisDescription ).read_f(offset = offset)
#print analysisHeader
# read data
NP = (SECTORSIZE*header['NBD'])/2
NP = NP - NP%header['NC']
NP = NP/header['NC']
if not lazy:
data = np.memmap(self.filename , np.dtype('i2') , 'r',
#shape = (header['NC'], header['NP']) ,
shape = (NP,header['NC'], ) ,
offset = offset+header['NBA']*SECTORSIZE)
# create a segment
seg = Segment()
bl.segments.append(seg)
for c in range(header['NC']):
unit = header['YU%d'%c]
try :
unit = pq.Quantity(1., unit)
except:
unit = pq.Quantity(1., '')
if lazy:
signal = [ ] * unit
else:
YG = float(header['YG%d'%c].replace(',','.'))
ADCMAX = header['ADCMAX']
VMax = analysisHeader['VMax'][c]
signal = data[:,header['YO%d'%c]].astype('f4')*VMax/ADCMAX/YG * unit
anaSig = AnalogSignal(signal,
sampling_rate=
pq.Hz /
analysisHeader['SamplingInterval'] ,
t_start=analysisHeader['TimeRecorded'] *
pq.s,
name=header['YN%d'%c], channel_index=c)
if lazy:
anaSig.lazy_shape = NP
seg.analogsignals.append(anaSig)
fid.close()
create_many_to_one_relationship(bl)
return bl
AnalysisDescription = [
('RecordStatus','8s'),
('RecordType','4s'),
('GroupNumber','f'),
('TimeRecorded','f'),
('SamplingInterval','f'),
('VMax','8f'),
]
class HeaderReader():
def __init__(self,fid ,description ):
self.fid = fid
self.description = description
def read_f(self, offset =0):
self.fid.seek(offset)
d = { }
for key, fmt in self.description :
val = struct.unpack(fmt , self.fid.read(struct.calcsize(fmt)))
if len(val) == 1:
val = val[0]
else :
val = list(val)
d[key] = val
return d
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