1 | """ |
---|
2 | Calculation thread for modeling |
---|
3 | """ |
---|
4 | |
---|
5 | import time |
---|
6 | import numpy |
---|
7 | import math |
---|
8 | from sas.sascalc.data_util.calcthread import CalcThread |
---|
9 | from sas.sascalc.fit.MultiplicationModel import MultiplicationModel |
---|
10 | import sas.qtgui.Utilities.LocalConfig as LocalConfig |
---|
11 | |
---|
12 | class Calc2D(CalcThread): |
---|
13 | """ |
---|
14 | Compute 2D model |
---|
15 | This calculation assumes a 2-fold symmetry of the model |
---|
16 | where points are computed for one half of the detector |
---|
17 | and I(qx, qy) = I(-qx, -qy) is assumed. |
---|
18 | """ |
---|
19 | def __init__(self, data, model, smearer, qmin, qmax, page_id, |
---|
20 | state=None, |
---|
21 | weight=None, |
---|
22 | fid=None, |
---|
23 | toggle_mode_on=False, |
---|
24 | completefn=None, |
---|
25 | updatefn=None, |
---|
26 | update_chisqr=True, |
---|
27 | source='model', |
---|
28 | yieldtime=0.04, |
---|
29 | worktime=0.04, |
---|
30 | exception_handler=None, |
---|
31 | ): |
---|
32 | CalcThread.__init__(self, completefn, updatefn, yieldtime, worktime, |
---|
33 | exception_handler=exception_handler) |
---|
34 | self.qmin = qmin |
---|
35 | self.qmax = qmax |
---|
36 | self.weight = weight |
---|
37 | self.fid = fid |
---|
38 | #self.qstep = qstep |
---|
39 | self.toggle_mode_on = toggle_mode_on |
---|
40 | self.data = data |
---|
41 | self.page_id = page_id |
---|
42 | self.state = None |
---|
43 | # the model on to calculate |
---|
44 | self.model = model |
---|
45 | self.smearer = smearer |
---|
46 | self.starttime = 0 |
---|
47 | self.update_chisqr = update_chisqr |
---|
48 | self.source = source |
---|
49 | |
---|
50 | def compute(self): |
---|
51 | """ |
---|
52 | Compute the data given a model function |
---|
53 | """ |
---|
54 | self.starttime = time.time() |
---|
55 | # Determine appropriate q range |
---|
56 | if self.qmin is None: |
---|
57 | self.qmin = 0 |
---|
58 | if self.qmax is None: |
---|
59 | if self.data is not None: |
---|
60 | newx = math.pow(max(math.fabs(self.data.xmax), |
---|
61 | math.fabs(self.data.xmin)), 2) |
---|
62 | newy = math.pow(max(math.fabs(self.data.ymax), |
---|
63 | math.fabs(self.data.ymin)), 2) |
---|
64 | self.qmax = math.sqrt(newx + newy) |
---|
65 | |
---|
66 | if self.data is None: |
---|
67 | msg = "Compute Calc2D receive data = %s.\n" % str(self.data) |
---|
68 | raise ValueError(msg) |
---|
69 | |
---|
70 | # Define matrix where data will be plotted |
---|
71 | radius = numpy.sqrt((self.data.qx_data * self.data.qx_data) + \ |
---|
72 | (self.data.qy_data * self.data.qy_data)) |
---|
73 | |
---|
74 | # For theory, qmax is based on 1d qmax |
---|
75 | # so that must be mulitified by sqrt(2) to get actual max for 2d |
---|
76 | index_model = (self.qmin <= radius) & (radius <= self.qmax) |
---|
77 | index_model = index_model & self.data.mask |
---|
78 | index_model = index_model & numpy.isfinite(self.data.data) |
---|
79 | |
---|
80 | if self.smearer is not None: |
---|
81 | # Set smearer w/ data, model and index. |
---|
82 | fn = self.smearer |
---|
83 | fn.set_model(self.model) |
---|
84 | fn.set_index(index_model) |
---|
85 | # Calculate smeared Intensity |
---|
86 | #(by Gaussian averaging): DataLoader/smearing2d/Smearer2D() |
---|
87 | value = fn.get_value() |
---|
88 | else: |
---|
89 | # calculation w/o smearing |
---|
90 | value = self.model.evalDistribution([ |
---|
91 | self.data.qx_data[index_model], |
---|
92 | self.data.qy_data[index_model] |
---|
93 | ]) |
---|
94 | output = numpy.zeros(len(self.data.qx_data)) |
---|
95 | # output default is None |
---|
96 | # This method is to distinguish between masked |
---|
97 | #point(nan) and data point = 0. |
---|
98 | output = output / output |
---|
99 | # set value for self.mask==True, else still None to Plottools |
---|
100 | output[index_model] = value |
---|
101 | elapsed = time.time() - self.starttime |
---|
102 | |
---|
103 | if LocalConfig.USING_TWISTED: |
---|
104 | return (output, |
---|
105 | self.data, |
---|
106 | self.page_id, |
---|
107 | self.model, |
---|
108 | self.state, |
---|
109 | self.toggle_mode_on, |
---|
110 | elapsed, |
---|
111 | index_model, |
---|
112 | self.fid, |
---|
113 | self.qmin, |
---|
114 | self.qmax, |
---|
115 | self.weight, |
---|
116 | self.update_chisqr, |
---|
117 | self.source) |
---|
118 | else: |
---|
119 | self.complete(image=output, |
---|
120 | data=self.data, |
---|
121 | page_id=self.page_id, |
---|
122 | model=self.model, |
---|
123 | state=self.state, |
---|
124 | toggle_mode_on=self.toggle_mode_on, |
---|
125 | elapsed=elapsed, |
---|
126 | index=index_model, |
---|
127 | fid=self.fid, |
---|
128 | qmin=self.qmin, |
---|
129 | qmax=self.qmax, |
---|
130 | weight=self.weight, |
---|
131 | #qstep=self.qstep, |
---|
132 | update_chisqr=self.update_chisqr, |
---|
133 | source=self.source) |
---|
134 | |
---|
135 | |
---|
136 | class Calc1D(CalcThread): |
---|
137 | """ |
---|
138 | Compute 1D data |
---|
139 | """ |
---|
140 | def __init__(self, model, |
---|
141 | page_id, |
---|
142 | data, |
---|
143 | fid=None, |
---|
144 | qmin=None, |
---|
145 | qmax=None, |
---|
146 | weight=None, |
---|
147 | smearer=None, |
---|
148 | toggle_mode_on=False, |
---|
149 | state=None, |
---|
150 | completefn=None, |
---|
151 | update_chisqr=True, |
---|
152 | source='model', |
---|
153 | updatefn=None, |
---|
154 | yieldtime=0.01, |
---|
155 | worktime=0.01, |
---|
156 | exception_handler=None, |
---|
157 | ): |
---|
158 | """ |
---|
159 | """ |
---|
160 | CalcThread.__init__(self, completefn, updatefn, yieldtime, worktime, |
---|
161 | exception_handler=exception_handler) |
---|
162 | self.fid = fid |
---|
163 | self.data = data |
---|
164 | self.qmin = qmin |
---|
165 | self.qmax = qmax |
---|
166 | self.model = model |
---|
167 | self.weight = weight |
---|
168 | self.toggle_mode_on = toggle_mode_on |
---|
169 | self.state = state |
---|
170 | self.page_id = page_id |
---|
171 | self.smearer = smearer |
---|
172 | self.starttime = 0 |
---|
173 | self.update_chisqr = update_chisqr |
---|
174 | self.source = source |
---|
175 | self.out = None |
---|
176 | self.index = None |
---|
177 | |
---|
178 | def compute(self): |
---|
179 | """ |
---|
180 | Compute model 1d value given qmin , qmax , x value |
---|
181 | """ |
---|
182 | self.starttime = time.time() |
---|
183 | output = numpy.zeros((len(self.data.x))) |
---|
184 | index = (self.qmin <= self.data.x) & (self.data.x <= self.qmax) |
---|
185 | |
---|
186 | # If we use a smearer, also return the unsmeared model |
---|
187 | unsmeared_output = None |
---|
188 | unsmeared_data = None |
---|
189 | unsmeared_error = None |
---|
190 | ##smearer the ouput of the plot |
---|
191 | if self.smearer is not None: |
---|
192 | first_bin, last_bin = self.smearer.get_bin_range(self.qmin, |
---|
193 | self.qmax) |
---|
194 | mask = self.data.x[first_bin:last_bin+1] |
---|
195 | unsmeared_output = numpy.zeros((len(self.data.x))) |
---|
196 | unsmeared_output[first_bin:last_bin+1] = self.model.evalDistribution(mask) |
---|
197 | output = self.smearer(unsmeared_output, first_bin, last_bin) |
---|
198 | |
---|
199 | # Rescale data to unsmeared model |
---|
200 | # Check that the arrays are compatible. If we only have a model but no data, |
---|
201 | # the length of data.y will be zero. |
---|
202 | if isinstance(self.data.y, numpy.ndarray) and output.shape == self.data.y.shape: |
---|
203 | unsmeared_data = numpy.zeros((len(self.data.x))) |
---|
204 | unsmeared_error = numpy.zeros((len(self.data.x))) |
---|
205 | unsmeared_data[first_bin:last_bin+1] = self.data.y[first_bin:last_bin+1]\ |
---|
206 | * unsmeared_output[first_bin:last_bin+1]\ |
---|
207 | / output[first_bin:last_bin+1] |
---|
208 | unsmeared_error[first_bin:last_bin+1] = self.data.dy[first_bin:last_bin+1]\ |
---|
209 | * unsmeared_output[first_bin:last_bin+1]\ |
---|
210 | / output[first_bin:last_bin+1] |
---|
211 | unsmeared_output=unsmeared_output[index] |
---|
212 | unsmeared_data=unsmeared_data[index] |
---|
213 | unsmeared_error=unsmeared_error |
---|
214 | else: |
---|
215 | output[index] = self.model.evalDistribution(self.data.x[index]) |
---|
216 | |
---|
217 | sq_values = None |
---|
218 | pq_values = None |
---|
219 | s_model = None |
---|
220 | p_model = None |
---|
221 | if isinstance(self.model, MultiplicationModel): |
---|
222 | s_model = self.model.s_model |
---|
223 | p_model = self.model.p_model |
---|
224 | elif hasattr(self.model, "calc_composition_models"): |
---|
225 | results = self.model.calc_composition_models(self.data.x[index]) |
---|
226 | if results is not None: |
---|
227 | pq_values, sq_values = results |
---|
228 | |
---|
229 | if pq_values is None or sq_values is None: |
---|
230 | if p_model is not None and s_model is not None: |
---|
231 | sq_values = numpy.zeros((len(self.data.x))) |
---|
232 | pq_values = numpy.zeros((len(self.data.x))) |
---|
233 | sq_values[index] = s_model.evalDistribution(self.data.x[index]) |
---|
234 | pq_values[index] = p_model.evalDistribution(self.data.x[index]) |
---|
235 | |
---|
236 | elapsed = time.time() - self.starttime |
---|
237 | |
---|
238 | if LocalConfig.USING_TWISTED: |
---|
239 | return (self.data.x[index], output[index], |
---|
240 | self.page_id, |
---|
241 | self.state, |
---|
242 | self.weight, |
---|
243 | self.fid, |
---|
244 | self.toggle_mode_on, |
---|
245 | elapsed, index, self.model, |
---|
246 | self.data, |
---|
247 | self.update_chisqr, |
---|
248 | self.source, |
---|
249 | unsmeared_output, unsmeared_data, unsmeared_error, |
---|
250 | pq_values, sq_values) |
---|
251 | else: |
---|
252 | self.complete(x=self.data.x[index], y=output[index], |
---|
253 | page_id=self.page_id, |
---|
254 | state=self.state, |
---|
255 | weight=self.weight, |
---|
256 | fid=self.fid, |
---|
257 | toggle_mode_on=self.toggle_mode_on, |
---|
258 | elapsed=elapsed, index=index, model=self.model, |
---|
259 | data=self.data, |
---|
260 | update_chisqr=self.update_chisqr, |
---|
261 | source=self.source, |
---|
262 | unsmeared_model=unsmeared_output, |
---|
263 | unsmeared_data=unsmeared_data, |
---|
264 | unsmeared_error=unsmeared_error, |
---|
265 | pq_model=pq_values, |
---|
266 | sq_model=sq_values) |
---|
267 | |
---|
268 | def results(self): |
---|
269 | """ |
---|
270 | Send resuts of the computation |
---|
271 | """ |
---|
272 | return [self.out, self.index] |
---|