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59  <div class="section" id="teubnerstreymodel">
60<h1>TeubnerStreyModel<a class="headerlink" href="#teubnerstreymodel" title="Permalink to this headline">¶</a></h1>
61<div class="section" id="sans-models-teubnerstreymodel">
62<h2><a class="reference internal" href="#module-sans.models.TeubnerStreyModel" title="sans.models.TeubnerStreyModel"><tt class="xref py py-mod docutils literal"><span class="pre">sans.models.TeubnerStreyModel</span></tt></a><a class="headerlink" href="#sans-models-teubnerstreymodel" title="Permalink to this headline">¶</a></h2>
63<span class="target" id="module-sans.models.TeubnerStreyModel"></span><p>Provide F(x) = 1/( scale + c1*(x)^(2)+  c2*(x)^(4)) + bkd
64Teubner-Strey function as a BaseComponent model</p>
65<dl class="class">
66<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel">
67<em class="property">class </em><tt class="descclassname">sans.models.TeubnerStreyModel.</tt><tt class="descname">TeubnerStreyModel</tt><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel" title="Permalink to this definition">¶</a></dt>
68<dd><p>Bases: <a class="reference internal" href="BaseComponent.html#sans.models.BaseComponent.BaseComponent" title="sans.models.BaseComponent.BaseComponent"><tt class="xref py py-class docutils literal"><span class="pre">sans.models.BaseComponent.BaseComponent</span></tt></a></p>
69<p>Class that evaluates  the TeubnerStrey model.</p>
70<p>F(x) = 1/( scale + c1*(x)^(2)+  c2*(x)^(4)) + bkd</p>
71<dl class="docutils">
72<dt>The model has Four parameters: </dt>
73<dd>scale  =  scale factor
74c1     =  constant
75c2     =  constant
76bkd    =  incoherent background</dd>
77</dl>
78<dl class="method">
79<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel._TeubnerStrey">
80<tt class="descname">_TeubnerStrey</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel._TeubnerStrey" title="Permalink to this definition">¶</a></dt>
81<dd><p>Evaluate  F(x) = 1/( scale + c1*(x)^(2)+  c2*(x)^(4)) + bkd</p>
82</dd></dl>
83
84<dl class="method">
85<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel.__add__">
86<tt class="descname">__add__</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel.__add__" title="Permalink to this definition">¶</a></dt>
87<dd></dd></dl>
88
89<dl class="method">
90<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel.__div__">
91<tt class="descname">__div__</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel.__div__" title="Permalink to this definition">¶</a></dt>
92<dd></dd></dl>
93
94<dl class="method">
95<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel.__init__">
96<tt class="descname">__init__</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel.__init__" title="Permalink to this definition">¶</a></dt>
97<dd><p>Initialization</p>
98</dd></dl>
99
100<dl class="attribute">
101<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel.__module__">
102<tt class="descname">__module__</tt><em class="property"> = 'sans.models.TeubnerStreyModel'</em><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel.__module__" title="Permalink to this definition">¶</a></dt>
103<dd></dd></dl>
104
105<dl class="method">
106<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel.__mul__">
107<tt class="descname">__mul__</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel.__mul__" title="Permalink to this definition">¶</a></dt>
108<dd></dd></dl>
109
110<dl class="method">
111<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel.__str__">
112<tt class="descname">__str__</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel.__str__" title="Permalink to this definition">¶</a></dt>
113<dd><table class="docutils field-list" frame="void" rules="none">
114<col class="field-name" />
115<col class="field-body" />
116<tbody valign="top">
117<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">string representatio</td>
118</tr>
119</tbody>
120</table>
121</dd></dl>
122
123<dl class="method">
124<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel.__sub__">
125<tt class="descname">__sub__</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel.__sub__" title="Permalink to this definition">¶</a></dt>
126<dd></dd></dl>
127
128<dl class="method">
129<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel._clone">
130<tt class="descname">_clone</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel._clone" title="Permalink to this definition">¶</a></dt>
131<dd><p>Internal utility function to copy the internal
132data members to a fresh copy.</p>
133</dd></dl>
134
135<dl class="method">
136<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel.calculate_ER">
137<tt class="descname">calculate_ER</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel.calculate_ER" title="Permalink to this definition">¶</a></dt>
138<dd></dd></dl>
139
140<dl class="method">
141<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel.clone">
142<tt class="descname">clone</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel.clone" title="Permalink to this definition">¶</a></dt>
143<dd><p>Returns a new object identical to the current object</p>
144</dd></dl>
145
146<dl class="method">
147<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel.evalDistribution">
148<tt class="descname">evalDistribution</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel.evalDistribution" title="Permalink to this definition">¶</a></dt>
149<dd><p>Evaluate a distribution of q-values.</p>
150<ul>
151<li><p class="first">For 1D, a numpy array is expected as input:</p>
152<blockquote>
153<div><p>evalDistribution(q)</p>
154</div></blockquote>
155</li>
156</ul>
157<p>where q is a numpy array.</p>
158<ul class="simple">
159<li>For 2D, a list of numpy arrays are expected: [qx_prime,qy_prime],
160where 1D arrays,</li>
161</ul>
162<p>qx_prime = [ qx[0], qx[1], qx[2], ....]
163and
164qy_prime = [ qy[0], qy[1], qy[2], ....]</p>
165<p>Then get
166q = numpy.sqrt(qx_prime^2+qy_prime^2)</p>
167<p>that is a qr in 1D array;
168q = [q[0], q[1], q[2], ....]</p>
169<table class="docutils field-list" frame="void" rules="none">
170<col class="field-name" />
171<col class="field-body" />
172<tbody valign="top">
173<tr class="field-odd field"><th class="field-name">Note :</th><td class="field-body"><p class="first">Due to 2D speed issue, no anisotropic scattering
174is supported for python models, thus C-models should have</p>
175<blockquote class="last">
176<div><p>their own evalDistribution methods.</p>
177</div></blockquote>
178</td>
179</tr>
180</tbody>
181</table>
182<p>The method is then called the following way:</p>
183<p>evalDistribution(q)
184where q is a numpy array.</p>
185<table class="docutils field-list" frame="void" rules="none">
186<col class="field-name" />
187<col class="field-body" />
188<tbody valign="top">
189<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>qdist</strong> &#8211; ndarray of scalar q-values or list [qx,qy]
190where qx,qy are 1D ndarrays</td>
191</tr>
192</tbody>
193</table>
194</dd></dl>
195
196<dl class="method">
197<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel.getDispParamList">
198<tt class="descname">getDispParamList</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel.getDispParamList" title="Permalink to this definition">¶</a></dt>
199<dd><p>Return a list of all available parameters for the model</p>
200</dd></dl>
201
202<dl class="method">
203<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel.getParam">
204<tt class="descname">getParam</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel.getParam" title="Permalink to this definition">¶</a></dt>
205<dd><p>Set the value of a model parameter</p>
206<table class="docutils field-list" frame="void" rules="none">
207<col class="field-name" />
208<col class="field-body" />
209<tbody valign="top">
210<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>name</strong> &#8211; name of the parameter</td>
211</tr>
212</tbody>
213</table>
214</dd></dl>
215
216<dl class="method">
217<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel.getParamList">
218<tt class="descname">getParamList</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel.getParamList" title="Permalink to this definition">¶</a></dt>
219<dd><p>Return a list of all available parameters for the model</p>
220</dd></dl>
221
222<dl class="method">
223<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel.getParamListWithToken">
224<tt class="descname">getParamListWithToken</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel.getParamListWithToken" title="Permalink to this definition">¶</a></dt>
225<dd></dd></dl>
226
227<dl class="method">
228<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel.getParamWithToken">
229<tt class="descname">getParamWithToken</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel.getParamWithToken" title="Permalink to this definition">¶</a></dt>
230<dd></dd></dl>
231
232<dl class="method">
233<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel.is_fittable">
234<tt class="descname">is_fittable</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel.is_fittable" title="Permalink to this definition">¶</a></dt>
235<dd><p>Check if a given parameter is fittable or not</p>
236<table class="docutils field-list" frame="void" rules="none">
237<col class="field-name" />
238<col class="field-body" />
239<tbody valign="top">
240<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>par_name</strong> &#8211; the parameter name to check</td>
241</tr>
242</tbody>
243</table>
244</dd></dl>
245
246<dl class="method">
247<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel.run">
248<tt class="descname">run</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel.run" title="Permalink to this definition">¶</a></dt>
249<dd><p>Evaluate the model
250&#64;param x: input q-value (float or [float, float] as [r, theta])
251&#64;return: (PowerLaw value)</p>
252</dd></dl>
253
254<dl class="method">
255<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel.runXY">
256<tt class="descname">runXY</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel.runXY" title="Permalink to this definition">¶</a></dt>
257<dd><p>Evaluate the model
258&#64;param x: input q-value (float or [float, float] as [qx, qy])
259&#64;return: PowerLaw value</p>
260</dd></dl>
261
262<dl class="method">
263<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel.setParam">
264<tt class="descname">setParam</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel.setParam" title="Permalink to this definition">¶</a></dt>
265<dd><p>Set the value of a model parameter</p>
266<table class="docutils field-list" frame="void" rules="none">
267<col class="field-name" />
268<col class="field-body" />
269<tbody valign="top">
270<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
271<li><strong>name</strong> &#8211; name of the parameter</li>
272<li><strong>value</strong> &#8211; value of the parameter</li>
273</ul>
274</td>
275</tr>
276</tbody>
277</table>
278</dd></dl>
279
280<dl class="method">
281<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel.setParamWithToken">
282<tt class="descname">setParamWithToken</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel.setParamWithToken" title="Permalink to this definition">¶</a></dt>
283<dd></dd></dl>
284
285<dl class="method">
286<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel.teubnerStreyDistance">
287<tt class="descname">teubnerStreyDistance</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel.teubnerStreyDistance" title="Permalink to this definition">¶</a></dt>
288<dd><p>Calculate the quasi-periodic repeat distance (D/(2*pi))
289&#64;return D: quasi-periodic repeat distance</p>
290</dd></dl>
291
292<dl class="method">
293<dt id="sans.models.TeubnerStreyModel.TeubnerStreyModel.teubnerStreyLengths">
294<tt class="descname">teubnerStreyLengths</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TeubnerStreyModel.TeubnerStreyModel.teubnerStreyLengths" title="Permalink to this definition">¶</a></dt>
295<dd><p>Calculate the correlation length (L)
296&#64;return L: the correlation distance</p>
297</dd></dl>
298
299</dd></dl>
300
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