1 | # -*- coding: utf-8 -*- |
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2 | ########### SVN repository information ################### |
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3 | # $Date: 2020-03-03 21:01:43 +0000 (Tue, 03 Mar 2020) $ |
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4 | # $Author: toby $ |
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5 | # $Revision: 4339 $ |
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6 | # $URL: trunk/imports/G2rfd_xye.py $ |
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7 | # $Id: G2rfd_xye.py 4339 2020-03-03 21:01:43Z toby $ |
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8 | ########### SVN repository information ################### |
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9 | ''' |
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10 | *Module G2rfd_xye: read reflectometry data* |
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11 | ------------------------------------------------ |
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12 | |
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13 | Routines to read in reflectometry data from an .xye type file, with |
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14 | two-theta or Q steps. |
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15 | |
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16 | ''' |
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17 | |
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18 | from __future__ import division, print_function |
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19 | import os.path as ospath |
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20 | import numpy as np |
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21 | import GSASIIobj as G2obj |
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22 | import GSASIIpath |
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23 | GSASIIpath.SetVersionNumber("$Revision: 4339 $") |
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24 | npasind = lambda x: 180.*np.arcsin(x)/np.pi |
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25 | npsind = lambda x: np.sin(np.pi*x/180.) |
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26 | try: # fails on doc build |
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27 | fourpi = 4.0*np.pi |
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28 | _double_min = np.finfo(float).min |
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29 | _double_max = np.finfo(float).max |
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30 | except TypeError: |
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31 | pass |
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32 | |
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33 | class txt_XRayReaderClass(G2obj.ImportReflectometryData): |
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34 | 'Routines to import X-ray q REFD data from a .xrfd or .xdat file' |
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35 | def __init__(self): |
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36 | super(self.__class__,self).__init__( # fancy way to self-reference |
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37 | extensionlist=('.xrfd','.xdat'), |
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38 | strictExtension=False, |
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39 | formatName = 'q (A-1) step X-ray QRE data', |
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40 | longFormatName = 'q (A-1) stepped X-ray text data file in Q,R,E order; E optional' |
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41 | ) |
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42 | |
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43 | # Validate the contents -- make sure we only have valid lines |
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44 | def ContentsValidator(self, filename): |
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45 | 'Look through the file for expected types of lines in a valid q-step file' |
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46 | fp = open(filename,'r') |
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47 | Ndata = 0 |
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48 | for i,S in enumerate(fp): |
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49 | if '#' in S[0]: |
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50 | continue |
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51 | vals = S.split() |
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52 | if len(vals) >= 2: |
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53 | try: |
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54 | data = [float(val) for val in vals] |
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55 | Ndata += 1 |
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56 | except ValueError: |
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57 | pass |
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58 | fp.close() |
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59 | if not Ndata: |
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60 | self.errors = 'No 2 or more column numeric data found' |
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61 | return False |
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62 | return True # no errors encountered |
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63 | |
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64 | def Reader(self,filename, ParentFrame=None, **unused): |
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65 | print ('Read a q-step text file') |
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66 | x = [] |
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67 | y = [] |
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68 | w = [] |
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69 | sq = [] |
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70 | wave = 1.5428 #Cuka default |
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71 | Temperature = 300 |
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72 | fp = open(filename,'r') |
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73 | for i,S in enumerate(fp): |
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74 | if len(S) == 1: #skip blank line |
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75 | continue |
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76 | if '=' in S: |
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77 | self.comments.append(S[:-1]) |
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78 | if 'wave' in S.split('=')[0].lower(): |
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79 | try: |
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80 | wave = float(S.split('=')[1]) |
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81 | except: |
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82 | pass |
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83 | continue |
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84 | if '#' in S[0]: |
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85 | continue |
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86 | vals = S.split() |
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87 | if len(vals) >= 2: |
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88 | try: |
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89 | data = [float(val) for val in vals] |
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90 | x.append(float(data[0])) |
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91 | f = float(data[1]) |
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92 | if f <= 0.0: |
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93 | del x[-1] |
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94 | continue |
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95 | elif len(vals) > 2: |
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96 | y.append(float(data[1])) |
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97 | w.append(1.0/float(data[2])**2) |
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98 | if len(vals) == 4: |
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99 | sq.append(float(data[3])) |
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100 | else: |
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101 | sq.append(0.) |
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102 | else: |
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103 | y.append(float(data[1])) |
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104 | w.append(1.0/(0.02*float(data[1]))**2) |
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105 | sq.append(0.) |
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106 | except ValueError: |
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107 | msg = 'Error in line '+str(i+1) |
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108 | print (msg) |
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109 | continue |
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110 | fp.close() |
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111 | N = len(x) |
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112 | for S in self.comments: |
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113 | if 'Temp' in S.split('=')[0]: |
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114 | try: |
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115 | Temperature = float(S.split('=')[1]) |
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116 | except: |
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117 | pass |
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118 | self.instdict['wave'] = wave |
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119 | self.instdict['type'] = 'RXC' |
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120 | x = np.array(x) |
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121 | self.reflectometrydata = [ |
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122 | x, # x-axis values q |
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123 | np.array(y), # small angle pattern intensities |
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124 | np.array(w), # 1/sig(intensity)^2 values (weights) |
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125 | np.zeros(N), # calc. intensities (zero) |
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126 | np.zeros(N), # obs-calc profiles |
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127 | np.array(sq), # fix bkg |
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128 | ] |
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129 | self.reflectometryentry[0] = filename |
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130 | self.reflectometryentry[2] = 1 # xye file only has one bank |
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131 | self.idstring = ospath.basename(filename) |
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132 | # scan comments for temperature |
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133 | self.Sample['Temperature'] = Temperature |
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134 | return True |
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135 | |
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136 | class txt_NeutronReaderClass(G2obj.ImportReflectometryData): |
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137 | 'Routines to import neutron q REFD data from a .nrfd or .ndat file' |
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138 | def __init__(self): |
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139 | super(self.__class__,self).__init__( # fancy way to self-reference |
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140 | extensionlist=('.nrfd','.ndat'), |
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141 | strictExtension=False, |
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142 | formatName = 'q (A-1) step neutron QRE data', |
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143 | longFormatName = 'q (A-1) stepped neutron text data file in Q,R,E order; E optional' |
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144 | ) |
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145 | |
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146 | # Validate the contents -- make sure we only have valid lines |
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147 | def ContentsValidator(self, filename): |
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148 | 'Look through the file for expected types of lines in a valid q-step file' |
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149 | Ndata = 0 |
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150 | fp = open(filename,'r') |
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151 | for i,S in enumerate(fp): |
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152 | if '#' in S[0]: |
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153 | continue |
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154 | vals = S.split() |
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155 | if len(vals) >= 2: |
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156 | try: |
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157 | data = [float(val) for val in vals] |
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158 | Ndata += 1 |
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159 | except ValueError: |
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160 | pass |
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161 | fp.close() |
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162 | if not Ndata: |
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163 | self.errors = 'No 2 or more column numeric data found' |
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164 | return False |
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165 | return True # no errors encountered |
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166 | |
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167 | def Reader(self,filename,filepointer, ParentFrame=None, **unused): |
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168 | print ('Read a q-step text file') |
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169 | x = [] |
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170 | y = [] |
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171 | w = [] |
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172 | sq = [] |
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173 | wave = 1.5428 #Cuka default |
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174 | Temperature = 300 |
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175 | fp = open(filename,'r') |
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176 | for i,S in enumerate(fp): |
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177 | if len(S) == 1: #skip blank line |
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178 | continue |
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179 | if '=' in S: |
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180 | self.comments.append(S[:-1]) |
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181 | if 'wave' in S.split('=')[0].lower(): |
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182 | try: |
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183 | wave = float(S.split('=')[1]) |
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184 | except: |
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185 | pass |
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186 | continue |
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187 | if '#' in S[0]: |
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188 | continue |
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189 | vals = S.split() |
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190 | if len(vals) >= 2: |
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191 | try: |
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192 | data = [float(val) for val in vals] |
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193 | x.append(float(data[0])) |
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194 | f = float(data[1]) |
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195 | if f <= 0.0: |
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196 | del x[-1] |
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197 | continue |
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198 | elif len(vals) > 2: |
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199 | y.append(float(data[1])) |
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200 | w.append(1.0/float(data[2])**2) |
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201 | if len(vals) == 4: |
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202 | sq.append(float(data[3])) |
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203 | else: |
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204 | sq.append(0.) |
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205 | else: |
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206 | y.append(float(data[1])) |
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207 | w.append(1.0/(0.02*float(data[1]))**2) |
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208 | sq.append(0.) |
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209 | except ValueError: |
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210 | msg = 'Error in line '+str(i+1) |
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211 | print (msg) |
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212 | continue |
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213 | fp.close() |
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214 | N = len(x) |
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215 | for S in self.comments: |
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216 | if 'Temp' in S.split('=')[0]: |
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217 | try: |
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218 | Temperature = float(S.split('=')[1]) |
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219 | except: |
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220 | pass |
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221 | self.instdict['wave'] = wave |
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222 | self.instdict['type'] = 'RNC' |
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223 | x = np.array(x) |
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224 | self.reflectometrydata = [ |
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225 | x, # x-axis values q |
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226 | np.array(y), # small angle pattern intensities |
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227 | np.array(w), # 1/sig(intensity)^2 values (weights) |
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228 | np.zeros(N), # calc. intensities (zero) |
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229 | np.zeros(N), # obs-calc profiles |
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230 | np.array(sq), # Q FWHM |
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231 | ] |
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232 | self.reflectometryentry[0] = filename |
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233 | self.reflectometryentry[2] = 1 # xye file only has one bank |
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234 | self.idstring = ospath.basename(filename) |
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235 | # scan comments for temperature |
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236 | self.Sample['Temperature'] = Temperature |
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237 | return True |
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238 | |
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239 | class txt_XRayThetaReaderClass(G2obj.ImportReflectometryData): |
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240 | 'Routines to import X-ray theta REFD data from a .xtrfd or .xtdat file' |
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241 | def __init__(self): |
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242 | super(self.__class__,self).__init__( # fancy way to self-reference |
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243 | extensionlist=('.xtrfd','.xtdat'), |
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244 | strictExtension=False, |
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245 | formatName = 'theta step X-ray QRE data', |
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246 | longFormatName = 'theta stepped X-ray text data file in Q,R,E order; E optional' |
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247 | ) |
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248 | |
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249 | # Validate the contents -- make sure we only have valid lines |
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250 | def ContentsValidator(self, filename): |
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251 | 'Look through the file for expected types of lines in a valid q-step file' |
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252 | Ndata = 0 |
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253 | self.wavelength = 0. |
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254 | fp = open(filename,'r') |
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255 | for i,S in enumerate(fp): |
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256 | if '#' in S[0]: |
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257 | if 'wavelength' in S[:-1].lower(): |
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258 | self.wavelength = float(S[:-1].split('=')[1]) |
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259 | elif 'energy' in S[:-1].lower(): |
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260 | self.wavelength = 12.39842*1000./float(S[:-1].split('=')[1]) |
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261 | continue |
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262 | vals = S.split() |
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263 | if len(vals) >= 2: |
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264 | try: |
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265 | data = [float(val) for val in vals] |
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266 | Ndata += 1 |
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267 | except ValueError: |
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268 | pass |
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269 | fp.close() |
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270 | if not Ndata: |
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271 | self.errors = 'No 2 or more column numeric data found' |
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272 | return False |
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273 | elif not self.wavelength: |
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274 | self.errors = 'Missing wavelength or energy in header' |
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275 | return False |
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276 | return True # no errors encountered |
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277 | |
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278 | def Reader(self,filename, ParentFrame=None, **unused): |
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279 | print ('Read a q-step text file') |
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280 | x = [] |
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281 | y = [] |
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282 | w = [] |
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283 | sq = [] |
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284 | wave = self.wavelength |
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285 | Temperature = 300 |
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286 | fp = open(filename,'r') |
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287 | for i,S in enumerate(fp): |
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288 | if len(S) == 1: #skip blank line |
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289 | continue |
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290 | if '=' in S: |
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291 | self.comments.append(S[:-1]) |
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292 | if 'wave' in S.split('=')[0].lower(): |
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293 | try: |
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294 | wave = float(S.split('=')[1]) |
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295 | except: |
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296 | pass |
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297 | continue |
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298 | if '#' in S[0]: |
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299 | continue |
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300 | vals = S.split() |
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301 | if len(vals) >= 2: |
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302 | try: |
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303 | data = [float(val) for val in vals] |
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304 | x.append(fourpi*npsind(float(data[0]))/wave) |
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305 | f = float(data[1]) |
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306 | if f <= 0.0: |
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307 | del x[-1] |
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308 | continue |
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309 | elif len(vals) > 2: |
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310 | y.append(float(data[1])) |
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311 | w.append(1.0/float(data[2])**2) |
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312 | if len(vals) == 4: |
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313 | sq.append(float(data[3])) |
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314 | else: |
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315 | sq.append(0.) |
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316 | else: |
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317 | y.append(float(data[1])) |
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318 | w.append(1.0/(0.02*float(data[1]))**2) |
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319 | sq.append(0.) |
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320 | except ValueError: |
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321 | msg = 'Error in line '+str(i+1) |
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322 | print (msg) |
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323 | continue |
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324 | fp.close() |
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325 | N = len(x) |
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326 | for S in self.comments: |
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327 | if 'Temp' in S.split('=')[0]: |
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328 | try: |
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329 | Temperature = float(S.split('=')[1]) |
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330 | except: |
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331 | pass |
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332 | self.instdict['wave'] = wave |
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333 | self.instdict['type'] = 'RXC' |
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334 | x = np.array(x) |
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335 | self.reflectometrydata = [ |
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336 | x, # x-axis values q |
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337 | np.array(y), # small angle pattern intensities |
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338 | np.array(w), # 1/sig(intensity)^2 values (weights) |
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339 | np.zeros(N), # calc. intensities (zero) |
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340 | np.zeros(N), # obs-calc profiles |
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341 | np.array(sq), # fix bkg |
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342 | ] |
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343 | self.reflectometryentry[0] = filename |
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344 | self.reflectometryentry[2] = 1 # xye file only has one bank |
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345 | self.idstring = ospath.basename(filename) |
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346 | # scan comments for temperature |
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347 | self.Sample['Temperature'] = Temperature |
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348 | |
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349 | return True |
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350 | |
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