[6f1f129] | 1 | """ |
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| 2 | This software was developed by the University of Tennessee as part of the |
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| 3 | Distributed Data Analysis of Neutron Scattering Experiments (DANSE) |
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| 4 | project funded by the US National Science Foundation. |
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| 5 | |
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| 6 | See the license text in license.txt |
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| 7 | |
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| 8 | copyright 2009, University of Tennessee |
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| 9 | """ |
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| 10 | import time, os |
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| 11 | |
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| 12 | ## List of P(r) inversion inputs |
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| 13 | in_list= [["nterms", "self.nfunc"], |
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| 14 | ["d_max", "self.d_max"], |
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| 15 | ["alpha", "self.alpha"], |
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| 16 | ["slit_width", "self.width"], |
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| 17 | ["slit_height", "self.height"], |
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| 18 | ["qmin", "self.qmin"], |
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| 19 | ["qmax", "self.qmax"]] |
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| 20 | |
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| 21 | ## List of P(r) inversion outputs |
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| 22 | out_list= [["elapsed", "self.elapsed"], |
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| 23 | ["rg", "self.rg"], |
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| 24 | ["iq0", "self.iq0"], |
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| 25 | ["bck", "self.bck"], |
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| 26 | ["chi2", "self.chi2"], |
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| 27 | ["osc", "self.osc"], |
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| 28 | ["pos", "self.pos"], |
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| 29 | ["pos_err", "self.pos_err"], |
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| 30 | ["alpha_estimate", "self.alpha_estimate"], |
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| 31 | ["nterms_estimate", "self.nterms_estimate"]] |
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| 32 | |
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| 33 | class InversionState(object): |
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| 34 | """ |
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| 35 | Class to hold the state information of the InversionControl panel. |
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| 36 | """ |
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| 37 | def __init__(self): |
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| 38 | """ |
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| 39 | Default values |
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| 40 | """ |
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| 41 | # Input |
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| 42 | self.file = None |
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| 43 | self.estimate_bck = False |
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| 44 | self.timestamp = time.time() |
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| 45 | |
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| 46 | # Inversion parameters |
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| 47 | self.nfunc = None |
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| 48 | self.d_max = None |
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| 49 | self.alpha = None |
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| 50 | |
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| 51 | # Slit parameters |
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| 52 | self.height = None |
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| 53 | self.width = None |
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| 54 | |
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| 55 | # Q range |
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| 56 | self.qmin = None |
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| 57 | self.qmax = None |
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| 58 | |
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| 59 | # Outputs |
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| 60 | self.elapsed = None |
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| 61 | self.rg = None |
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| 62 | self.iq0 = None |
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| 63 | self.bck = None |
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| 64 | self.chi2 = None |
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| 65 | self.osc = None |
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| 66 | self.pos = None |
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| 67 | self.pos_err = None |
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| 68 | |
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| 69 | # Estimates |
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| 70 | self.alpha_estimate = None |
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| 71 | self.nterms_estimate = None |
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| 72 | |
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| 73 | # Data |
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| 74 | self.q = None |
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| 75 | self.iq_obs = None |
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| 76 | self.iq_calc = None |
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| 77 | |
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| 78 | def __str__(self): |
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| 79 | """ |
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| 80 | Pretty print |
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| 81 | |
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| 82 | @return: string representing the state |
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| 83 | """ |
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| 84 | state = "File: %s\n" % self.file |
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| 85 | state += "Timestamp: %s\n" % self.timestamp |
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| 86 | state += "Estimate bck: %s\n" % str(self.estimate_bck) |
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| 87 | state += "No. terms: %s\n" % str(self.nfunc) |
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| 88 | state += "D_max: %s\n" % str(self.d_max) |
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| 89 | state += "Alpha: %s\n" % str(self.alpha) |
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| 90 | |
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| 91 | state += "Slit height: %s\n" % str(self.height) |
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| 92 | state += "Slit width: %s\n" % str(self.width) |
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| 93 | |
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| 94 | state += "Qmin: %s\n" % str(self.qmin) |
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| 95 | state += "Qmax: %s\n" % str(self.qmax) |
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| 96 | |
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| 97 | state += "\nEstimates:\n" |
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| 98 | state += " Alpha: %s\n" % str(self.alpha_estimate) |
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| 99 | state += " Nterms: %s\n" % str(self.nterms_estimate) |
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| 100 | |
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| 101 | state += "\nOutputs:\n" |
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| 102 | state += " Elapsed: %s\n" % str(self.elapsed) |
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| 103 | state += " Rg: %s\n" % str(self.rg) |
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| 104 | state += " I(q=0): %s\n" % str(self.iq0) |
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| 105 | state += " Bck: %s\n" % str(self.bck) |
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| 106 | state += " Chi^2: %s\n" % str(self.chi2) |
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| 107 | state += " Oscillation:%s\n" % str(self.osc) |
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| 108 | state += " Positive: %s\n" % str(self.pos) |
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| 109 | state += " 1-sigma pos:%s\n" % str(self.pos_err) |
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| 110 | |
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| 111 | return state |
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| 112 | |
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| 113 | def toXML(self, file="pr_state.prv"): |
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| 114 | """ |
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| 115 | Writes the state of the InversionControl panel to file, as XML. |
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| 116 | |
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| 117 | @param file: file to write to |
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| 118 | """ |
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| 119 | from xml.dom.minidom import getDOMImplementation |
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| 120 | |
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| 121 | impl = getDOMImplementation() |
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| 122 | |
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| 123 | doc_type = impl.createDocumentType("pr_inversion", "1.0", "1.0") |
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| 124 | |
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| 125 | newdoc = impl.createDocument(None, "pr_inversion", doc_type) |
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| 126 | top_element = newdoc.documentElement |
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| 127 | attr = newdoc.createAttribute("version") |
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| 128 | attr.nodeValue = '1.0' |
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| 129 | top_element.setAttributeNode(attr) |
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| 130 | |
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| 131 | # File name |
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| 132 | element = newdoc.createElement("filename") |
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| 133 | element.appendChild(newdoc.createTextNode(self.file)) |
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| 134 | top_element.appendChild(element) |
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| 135 | |
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| 136 | element = newdoc.createElement("timestamp") |
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| 137 | element.appendChild(newdoc.createTextNode(time.ctime(self.timestamp))) |
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| 138 | attr = newdoc.createAttribute("epoch") |
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| 139 | attr.nodeValue = str(self.timestamp) |
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| 140 | element.setAttributeNode(attr) |
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| 141 | top_element.appendChild(element) |
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| 142 | |
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| 143 | # Inputs |
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| 144 | inputs = newdoc.createElement("inputs") |
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| 145 | top_element.appendChild(inputs) |
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| 146 | |
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| 147 | for item in in_list: |
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| 148 | element = newdoc.createElement(item[0]) |
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| 149 | exec "element.appendChild(newdoc.createTextNode(str(%s)))" % item[1] |
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| 150 | inputs.appendChild(element) |
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| 151 | |
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| 152 | # Outputs |
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| 153 | outputs = newdoc.createElement("outputs") |
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| 154 | top_element.appendChild(outputs) |
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| 155 | |
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| 156 | for item in out_list: |
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| 157 | element = newdoc.createElement(item[0]) |
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| 158 | exec "element.appendChild(newdoc.createTextNode(str(%s)))" % item[1] |
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| 159 | outputs.appendChild(element) |
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| 160 | |
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| 161 | # Save the file |
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| 162 | fd = open(file, 'w') |
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| 163 | fd.write(newdoc.toprettyxml()) |
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| 164 | fd.close() |
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| 165 | |
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| 166 | def fromXML(self, file): |
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| 167 | """ |
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| 168 | Load a P(r) inversion state from a file |
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| 169 | |
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| 170 | @param file: .prv file |
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| 171 | """ |
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| 172 | # Check whether the file is valid |
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| 173 | if not os.path.isfile(file): |
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| 174 | raise RuntimeError, "P(r) reader: cannot open %s" % file |
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| 175 | |
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| 176 | from xml.dom.minidom import parse |
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| 177 | doc = parse(file) |
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| 178 | if doc.documentElement.tagName == 'pr_inversion': |
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| 179 | if doc.documentElement.hasAttribute('version')\ |
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| 180 | and doc.documentElement.getAttribute('version') == '1.0': |
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| 181 | |
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| 182 | if doc.documentElement.hasChildNodes(): |
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| 183 | for node in doc.documentElement.childNodes: |
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| 184 | if node.nodeName == 'filename': |
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| 185 | if node.hasChildNodes(): |
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| 186 | self.file = node.childNodes[0].nodeValue.strip() |
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| 187 | elif node.nodeName == 'timestamp': |
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| 188 | if node.hasAttribute('epoch'): |
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| 189 | try: |
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| 190 | self.timestamp = float(node.getAttribute('epoch')) |
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| 191 | except: |
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| 192 | # Could not read timestamp: pass |
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| 193 | pass |
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| 194 | |
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| 195 | # Parse inversion inputs |
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| 196 | elif node.nodeName == 'inputs': |
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| 197 | if node.hasChildNodes(): |
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| 198 | for item in node.childNodes: |
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| 199 | for out in in_list: |
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| 200 | if item.nodeName == out[0]: |
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| 201 | try: |
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| 202 | exec '%s = float(item.childNodes[0].nodeValue.strip())' % out[1] |
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| 203 | except: |
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| 204 | exec '%s = None' % out[1] |
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| 205 | elif item.nodeName == 'estimate_bck': |
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| 206 | try: |
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| 207 | self.estimate_bck = item.childNodes[0].nodeValue.strip()=='True' |
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| 208 | except: |
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| 209 | self.estimate_bck = False |
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| 210 | |
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| 211 | # Parse inversion outputs |
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| 212 | elif node.nodeName == 'outputs': |
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| 213 | if node.hasChildNodes(): |
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| 214 | for item in node.childNodes: |
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| 215 | for out in out_list: |
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| 216 | if item.nodeName == out[0]: |
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| 217 | try: |
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| 218 | exec '%s = float(item.childNodes[0].nodeValue.strip())' % out[1] |
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| 219 | except: |
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| 220 | exec '%s = None' % out[1] |
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| 221 | else: |
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| 222 | raise RuntimeError, "Unsupported P(r) file version: %s" % doc.documentElement.getAttribute('version') |
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| 223 | |
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| 224 | |
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| 225 | class Reader: |
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| 226 | """ |
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| 227 | Class to load a .prv P(r) inversion file |
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| 228 | """ |
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| 229 | ## File type |
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| 230 | type_name = "P(r)" |
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| 231 | |
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| 232 | ## Wildcards |
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| 233 | type = ["P(r) files (*.prv)|*.prv"] |
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| 234 | ## List of allowed extensions |
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| 235 | ext=['.prv', '.PRV'] |
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| 236 | |
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| 237 | def __init__(self, call_back): |
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| 238 | """ |
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| 239 | Initialize the call-back method to be called |
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| 240 | after we load a file |
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| 241 | @param call_back: call-back method |
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| 242 | """ |
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| 243 | self.call_back = call_back |
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| 244 | |
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| 245 | def read(self, path): |
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| 246 | """ |
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| 247 | Load a new P(r) inversion state from file |
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| 248 | |
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| 249 | @param path: file path |
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| 250 | @return: None |
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| 251 | """ |
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| 252 | # Read the new state from file |
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| 253 | state = InversionState() |
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| 254 | state.fromXML(path) |
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| 255 | |
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| 256 | # Call back to post the new state |
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| 257 | self.call_back(state) |
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| 258 | return None |
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| 259 | |
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| 260 | if __name__ == "__main__": |
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| 261 | state = InversionState() |
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| 262 | #print state.fromXML('../../test/pr_state.prv') |
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| 263 | print state.fromXML('../../test/test.prv') |
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| 264 | print state |
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