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
|
# coding: utf-8
#
# Project: FabIO X-ray image reader
#
# Copyright (C) 2017 Cornell High Energy Synchrotron Source
# Ithaca (New York, USA)
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
"""
Author:
........
* Jesse Hopkins:
Cornell High Energy Synchrotron Source;
Ithaca (New York, USA)
mpaimage can read ascii and binary .mpa (multiwire) files
"""
import logging
import numpy
from .fabioimage import FabioImage, OrderedDict
logger = logging.getLogger(__name__)
class MpaImage(FabioImage):
"""
FabIO image class for Images from multiwire data files (mpa)
"""
DESCRIPTION = "multiwire data files"
DEFAULT_EXTENSIONS = ["mpa"]
def _readheader(self, infile):
"""
Read and decode the header of an image
:param infile: Opened python file (can be stringIO or bzipped file)
"""
# list of header key to keep the order (when writing)
header_prefix = ''
tmp_hdr = OrderedDict([("None", OrderedDict())])
while True:
line = infile.readline()
line = line.decode()
if line.find('=') > -1:
key, value = line.strip().split('=', 1)
key = key.strip()
value = value.strip()
if header_prefix == '':
tmp_hdr["None"][key] = value
else:
tmp_hdr[header_prefix][key] = value
elif line.startswith('[DATA') or line.startswith('[CDAT'):
break
else:
header_prefix = line.strip().strip('[]')
tmp_hdr[header_prefix] = {}
self.header = OrderedDict()
for key, key_data in tmp_hdr.items():
key = str(key)
for subkey, subkey_data in key_data.items():
subkey = str(subkey)
if key == 'None':
self.header[subkey] = subkey_data
else:
self.header[key + '_' + subkey] = subkey_data
def read(self, fname, frame=None):
"""
Try to read image
:param fname: name of the file
"""
infile = self._open(fname, 'r')
self._readheader(infile)
if ('ADC1_range' not in self.header.keys() or
'ADC2_range' not in self.header.keys() or
'mpafmt' not in self.header.keys()):
logger.error('Error in opening %s: badly formatted mpa header.', fname)
raise IOError('Error in opening %s: badly formatted mpa header.' % fname)
dim2 = int(self.header['ADC1_range'])
dim1 = int(self.header['ADC2_range'])
self._shape = dim2, dim1
if self.header['mpafmt'] == 'asc':
lines = infile.readlines()
else:
infile.close()
infile = self._open(fname, 'rb')
lines = infile.readlines()
for i, line in enumerate(lines):
if line.startswith(b'[CDAT'):
pos = i
break
img = numpy.array(lines[pos + 1:], dtype=float)
self.data = img.reshape(self._shape)
self._shape = None
return self
mpaimage = MpaImage
|
