1 | """ |
---|
2 | This software was developed by the University of Tennessee as part of the |
---|
3 | Distributed Data Analysis of Neutron Scattering Experiments (DANSE) |
---|
4 | project funded by the US National Science Foundation. |
---|
5 | |
---|
6 | See the license text in license.txt |
---|
7 | |
---|
8 | copyright 2009, University of Tennessee |
---|
9 | """ |
---|
10 | import time, os |
---|
11 | |
---|
12 | ## List of P(r) inversion inputs |
---|
13 | in_list= [["nterms", "self.nfunc"], |
---|
14 | ["d_max", "self.d_max"], |
---|
15 | ["alpha", "self.alpha"], |
---|
16 | ["slit_width", "self.width"], |
---|
17 | ["slit_height", "self.height"], |
---|
18 | ["qmin", "self.qmin"], |
---|
19 | ["qmax", "self.qmax"]] |
---|
20 | |
---|
21 | ## List of P(r) inversion outputs |
---|
22 | out_list= [["elapsed", "self.elapsed"], |
---|
23 | ["rg", "self.rg"], |
---|
24 | ["iq0", "self.iq0"], |
---|
25 | ["bck", "self.bck"], |
---|
26 | ["chi2", "self.chi2"], |
---|
27 | ["osc", "self.osc"], |
---|
28 | ["pos", "self.pos"], |
---|
29 | ["pos_err", "self.pos_err"], |
---|
30 | ["alpha_estimate", "self.alpha_estimate"], |
---|
31 | ["nterms_estimate", "self.nterms_estimate"]] |
---|
32 | |
---|
33 | class InversionState(object): |
---|
34 | """ |
---|
35 | Class to hold the state information of the InversionControl panel. |
---|
36 | """ |
---|
37 | def __init__(self): |
---|
38 | """ |
---|
39 | Default values |
---|
40 | """ |
---|
41 | # Input |
---|
42 | self.file = None |
---|
43 | self.estimate_bck = False |
---|
44 | self.timestamp = time.time() |
---|
45 | |
---|
46 | # Inversion parameters |
---|
47 | self.nfunc = None |
---|
48 | self.d_max = None |
---|
49 | self.alpha = None |
---|
50 | |
---|
51 | # Slit parameters |
---|
52 | self.height = None |
---|
53 | self.width = None |
---|
54 | |
---|
55 | # Q range |
---|
56 | self.qmin = None |
---|
57 | self.qmax = None |
---|
58 | |
---|
59 | # Outputs |
---|
60 | self.elapsed = None |
---|
61 | self.rg = None |
---|
62 | self.iq0 = None |
---|
63 | self.bck = None |
---|
64 | self.chi2 = None |
---|
65 | self.osc = None |
---|
66 | self.pos = None |
---|
67 | self.pos_err = None |
---|
68 | |
---|
69 | # Estimates |
---|
70 | self.alpha_estimate = None |
---|
71 | self.nterms_estimate = None |
---|
72 | |
---|
73 | # Data |
---|
74 | self.q = None |
---|
75 | self.iq_obs = None |
---|
76 | self.iq_calc = None |
---|
77 | |
---|
78 | def __str__(self): |
---|
79 | """ |
---|
80 | Pretty print |
---|
81 | |
---|
82 | @return: string representing the state |
---|
83 | """ |
---|
84 | state = "File: %s\n" % self.file |
---|
85 | state += "Timestamp: %s\n" % self.timestamp |
---|
86 | state += "Estimate bck: %s\n" % str(self.estimate_bck) |
---|
87 | state += "No. terms: %s\n" % str(self.nfunc) |
---|
88 | state += "D_max: %s\n" % str(self.d_max) |
---|
89 | state += "Alpha: %s\n" % str(self.alpha) |
---|
90 | |
---|
91 | state += "Slit height: %s\n" % str(self.height) |
---|
92 | state += "Slit width: %s\n" % str(self.width) |
---|
93 | |
---|
94 | state += "Qmin: %s\n" % str(self.qmin) |
---|
95 | state += "Qmax: %s\n" % str(self.qmax) |
---|
96 | |
---|
97 | state += "\nEstimates:\n" |
---|
98 | state += " Alpha: %s\n" % str(self.alpha_estimate) |
---|
99 | state += " Nterms: %s\n" % str(self.nterms_estimate) |
---|
100 | |
---|
101 | state += "\nOutputs:\n" |
---|
102 | state += " Elapsed: %s\n" % str(self.elapsed) |
---|
103 | state += " Rg: %s\n" % str(self.rg) |
---|
104 | state += " I(q=0): %s\n" % str(self.iq0) |
---|
105 | state += " Bck: %s\n" % str(self.bck) |
---|
106 | state += " Chi^2: %s\n" % str(self.chi2) |
---|
107 | state += " Oscillation:%s\n" % str(self.osc) |
---|
108 | state += " Positive: %s\n" % str(self.pos) |
---|
109 | state += " 1-sigma pos:%s\n" % str(self.pos_err) |
---|
110 | |
---|
111 | return state |
---|
112 | |
---|
113 | def toXML(self, file="pr_state.prv"): |
---|
114 | """ |
---|
115 | Writes the state of the InversionControl panel to file, as XML. |
---|
116 | |
---|
117 | @param file: file to write to |
---|
118 | """ |
---|
119 | from xml.dom.minidom import getDOMImplementation |
---|
120 | |
---|
121 | impl = getDOMImplementation() |
---|
122 | |
---|
123 | doc_type = impl.createDocumentType("pr_inversion", "1.0", "1.0") |
---|
124 | |
---|
125 | newdoc = impl.createDocument(None, "pr_inversion", doc_type) |
---|
126 | top_element = newdoc.documentElement |
---|
127 | attr = newdoc.createAttribute("version") |
---|
128 | attr.nodeValue = '1.0' |
---|
129 | top_element.setAttributeNode(attr) |
---|
130 | |
---|
131 | # File name |
---|
132 | element = newdoc.createElement("filename") |
---|
133 | element.appendChild(newdoc.createTextNode(self.file)) |
---|
134 | top_element.appendChild(element) |
---|
135 | |
---|
136 | element = newdoc.createElement("timestamp") |
---|
137 | element.appendChild(newdoc.createTextNode(time.ctime(self.timestamp))) |
---|
138 | attr = newdoc.createAttribute("epoch") |
---|
139 | attr.nodeValue = str(self.timestamp) |
---|
140 | element.setAttributeNode(attr) |
---|
141 | top_element.appendChild(element) |
---|
142 | |
---|
143 | # Inputs |
---|
144 | inputs = newdoc.createElement("inputs") |
---|
145 | top_element.appendChild(inputs) |
---|
146 | |
---|
147 | for item in in_list: |
---|
148 | element = newdoc.createElement(item[0]) |
---|
149 | exec "element.appendChild(newdoc.createTextNode(str(%s)))" % item[1] |
---|
150 | inputs.appendChild(element) |
---|
151 | |
---|
152 | # Outputs |
---|
153 | outputs = newdoc.createElement("outputs") |
---|
154 | top_element.appendChild(outputs) |
---|
155 | |
---|
156 | for item in out_list: |
---|
157 | element = newdoc.createElement(item[0]) |
---|
158 | exec "element.appendChild(newdoc.createTextNode(str(%s)))" % item[1] |
---|
159 | outputs.appendChild(element) |
---|
160 | |
---|
161 | # Save the file |
---|
162 | fd = open(file, 'w') |
---|
163 | fd.write(newdoc.toprettyxml()) |
---|
164 | fd.close() |
---|
165 | |
---|
166 | def fromXML(self, file): |
---|
167 | """ |
---|
168 | Load a P(r) inversion state from a file |
---|
169 | |
---|
170 | @param file: .prv file |
---|
171 | """ |
---|
172 | # Check whether the file is valid |
---|
173 | if not os.path.isfile(file): |
---|
174 | raise RuntimeError, "P(r) reader: cannot open %s" % file |
---|
175 | |
---|
176 | from xml.dom.minidom import parse |
---|
177 | doc = parse(file) |
---|
178 | if doc.documentElement.tagName == 'pr_inversion': |
---|
179 | if doc.documentElement.hasAttribute('version')\ |
---|
180 | and doc.documentElement.getAttribute('version') == '1.0': |
---|
181 | |
---|
182 | if doc.documentElement.hasChildNodes(): |
---|
183 | for node in doc.documentElement.childNodes: |
---|
184 | if node.nodeName == 'filename': |
---|
185 | if node.hasChildNodes(): |
---|
186 | self.file = node.childNodes[0].nodeValue.strip() |
---|
187 | elif node.nodeName == 'timestamp': |
---|
188 | if node.hasAttribute('epoch'): |
---|
189 | try: |
---|
190 | self.timestamp = float(node.getAttribute('epoch')) |
---|
191 | except: |
---|
192 | # Could not read timestamp: pass |
---|
193 | pass |
---|
194 | |
---|
195 | # Parse inversion inputs |
---|
196 | elif node.nodeName == 'inputs': |
---|
197 | if node.hasChildNodes(): |
---|
198 | for item in node.childNodes: |
---|
199 | for out in in_list: |
---|
200 | if item.nodeName == out[0]: |
---|
201 | try: |
---|
202 | exec '%s = float(item.childNodes[0].nodeValue.strip())' % out[1] |
---|
203 | except: |
---|
204 | exec '%s = None' % out[1] |
---|
205 | elif item.nodeName == 'estimate_bck': |
---|
206 | try: |
---|
207 | self.estimate_bck = item.childNodes[0].nodeValue.strip()=='True' |
---|
208 | except: |
---|
209 | self.estimate_bck = False |
---|
210 | |
---|
211 | # Parse inversion outputs |
---|
212 | elif node.nodeName == 'outputs': |
---|
213 | if node.hasChildNodes(): |
---|
214 | for item in node.childNodes: |
---|
215 | for out in out_list: |
---|
216 | if item.nodeName == out[0]: |
---|
217 | try: |
---|
218 | exec '%s = float(item.childNodes[0].nodeValue.strip())' % out[1] |
---|
219 | except: |
---|
220 | exec '%s = None' % out[1] |
---|
221 | else: |
---|
222 | raise RuntimeError, "Unsupported P(r) file version: %s" % doc.documentElement.getAttribute('version') |
---|
223 | |
---|
224 | |
---|
225 | class Reader: |
---|
226 | """ |
---|
227 | Class to load a .prv P(r) inversion file |
---|
228 | """ |
---|
229 | ## File type |
---|
230 | type_name = "P(r)" |
---|
231 | |
---|
232 | ## Wildcards |
---|
233 | type = ["P(r) files (*.prv)|*.prv"] |
---|
234 | ## List of allowed extensions |
---|
235 | ext=['.prv', '.PRV'] |
---|
236 | |
---|
237 | def __init__(self, call_back): |
---|
238 | """ |
---|
239 | Initialize the call-back method to be called |
---|
240 | after we load a file |
---|
241 | @param call_back: call-back method |
---|
242 | """ |
---|
243 | self.call_back = call_back |
---|
244 | |
---|
245 | def read(self, path): |
---|
246 | """ |
---|
247 | Load a new P(r) inversion state from file |
---|
248 | |
---|
249 | @param path: file path |
---|
250 | @return: None |
---|
251 | """ |
---|
252 | # Read the new state from file |
---|
253 | state = InversionState() |
---|
254 | state.fromXML(path) |
---|
255 | |
---|
256 | # Call back to post the new state |
---|
257 | self.call_back(state) |
---|
258 | return None |
---|
259 | |
---|
260 | if __name__ == "__main__": |
---|
261 | state = InversionState() |
---|
262 | #print state.fromXML('../../test/pr_state.prv') |
---|
263 | print state.fromXML('../../test/test.prv') |
---|
264 | print state |
---|