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
|
# 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
"""
# Get ready for python3:
from __future__ import with_statement, print_function, division, absolute_import
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)
self.dim1 = int(self.header['ADC1_range'])
self.dim2 = int(self.header['ADC2_range'])
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.dim1, self.dim2))
return self
mpaimage = MpaImage
|
