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59  <div class="section" id="twolorentzianmodel">
60<h1>TwoLorentzianModel<a class="headerlink" href="#twolorentzianmodel" title="Permalink to this headline">¶</a></h1>
61<div class="section" id="sans-models-twolorentzianmodel">
62<h2><a class="reference internal" href="#module-sans.models.TwoLorentzianModel" title="sans.models.TwoLorentzianModel"><tt class="xref py py-mod docutils literal"><span class="pre">sans.models.TwoLorentzianModel</span></tt></a><a class="headerlink" href="#sans-models-twolorentzianmodel" title="Permalink to this headline">¶</a></h2>
63<span class="target" id="module-sans.models.TwoLorentzianModel"></span><p>TwoLorentzianModel function as a BaseComponent model</p>
64<dl class="class">
65<dt id="sans.models.TwoLorentzianModel.TwoLorentzianModel">
66<em class="property">class </em><tt class="descclassname">sans.models.TwoLorentzianModel.</tt><tt class="descname">TwoLorentzianModel</tt><a class="headerlink" href="#sans.models.TwoLorentzianModel.TwoLorentzianModel" title="Permalink to this definition">¶</a></dt>
67<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>
68<p>Class that evaluates a TwoLorentzianModel.
69I(q) = II(q) = scale_1/(1.0 + pow((q*length_1),exponent_1))
70+ scale_2/(1.0 + pow((q*length_2),exponent_2) )+ background</p>
71<dl class="method">
72<dt id="sans.models.TwoLorentzianModel.TwoLorentzianModel.__add__">
73<tt class="descname">__add__</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TwoLorentzianModel.TwoLorentzianModel.__add__" title="Permalink to this definition">¶</a></dt>
74<dd></dd></dl>
75
76<dl class="method">
77<dt id="sans.models.TwoLorentzianModel.TwoLorentzianModel.__div__">
78<tt class="descname">__div__</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TwoLorentzianModel.TwoLorentzianModel.__div__" title="Permalink to this definition">¶</a></dt>
79<dd></dd></dl>
80
81<dl class="method">
82<dt id="sans.models.TwoLorentzianModel.TwoLorentzianModel.__init__">
83<tt class="descname">__init__</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TwoLorentzianModel.TwoLorentzianModel.__init__" title="Permalink to this definition">¶</a></dt>
84<dd><p>Initialization</p>
85</dd></dl>
86
87<dl class="attribute">
88<dt id="sans.models.TwoLorentzianModel.TwoLorentzianModel.__module__">
89<tt class="descname">__module__</tt><em class="property"> = 'sans.models.TwoLorentzianModel'</em><a class="headerlink" href="#sans.models.TwoLorentzianModel.TwoLorentzianModel.__module__" title="Permalink to this definition">¶</a></dt>
90<dd></dd></dl>
91
92<dl class="method">
93<dt id="sans.models.TwoLorentzianModel.TwoLorentzianModel.__mul__">
94<tt class="descname">__mul__</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TwoLorentzianModel.TwoLorentzianModel.__mul__" title="Permalink to this definition">¶</a></dt>
95<dd></dd></dl>
96
97<dl class="method">
98<dt id="sans.models.TwoLorentzianModel.TwoLorentzianModel.__str__">
99<tt class="descname">__str__</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TwoLorentzianModel.TwoLorentzianModel.__str__" title="Permalink to this definition">¶</a></dt>
100<dd><table class="docutils field-list" frame="void" rules="none">
101<col class="field-name" />
102<col class="field-body" />
103<tbody valign="top">
104<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">string representatio</td>
105</tr>
106</tbody>
107</table>
108</dd></dl>
109
110<dl class="method">
111<dt id="sans.models.TwoLorentzianModel.TwoLorentzianModel.__sub__">
112<tt class="descname">__sub__</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TwoLorentzianModel.TwoLorentzianModel.__sub__" title="Permalink to this definition">¶</a></dt>
113<dd></dd></dl>
114
115<dl class="method">
116<dt id="sans.models.TwoLorentzianModel.TwoLorentzianModel._clone">
117<tt class="descname">_clone</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TwoLorentzianModel.TwoLorentzianModel._clone" title="Permalink to this definition">¶</a></dt>
118<dd><p>Internal utility function to copy the internal
119data members to a fresh copy.</p>
120</dd></dl>
121
122<dl class="method">
123<dt id="sans.models.TwoLorentzianModel.TwoLorentzianModel._twolorentzian">
124<tt class="descname">_twolorentzian</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TwoLorentzianModel.TwoLorentzianModel._twolorentzian" title="Permalink to this definition">¶</a></dt>
125<dd><p>Model definition</p>
126</dd></dl>
127
128<dl class="method">
129<dt id="sans.models.TwoLorentzianModel.TwoLorentzianModel.calculate_ER">
130<tt class="descname">calculate_ER</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TwoLorentzianModel.TwoLorentzianModel.calculate_ER" title="Permalink to this definition">¶</a></dt>
131<dd></dd></dl>
132
133<dl class="method">
134<dt id="sans.models.TwoLorentzianModel.TwoLorentzianModel.clone">
135<tt class="descname">clone</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TwoLorentzianModel.TwoLorentzianModel.clone" title="Permalink to this definition">¶</a></dt>
136<dd><p>Returns a new object identical to the current object</p>
137</dd></dl>
138
139<dl class="method">
140<dt id="sans.models.TwoLorentzianModel.TwoLorentzianModel.evalDistribution">
141<tt class="descname">evalDistribution</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TwoLorentzianModel.TwoLorentzianModel.evalDistribution" title="Permalink to this definition">¶</a></dt>
142<dd><p>Evaluate a distribution of q-values.</p>
143<ul>
144<li><p class="first">For 1D, a numpy array is expected as input:</p>
145<blockquote>
146<div><p>evalDistribution(q)</p>
147</div></blockquote>
148</li>
149</ul>
150<p>where q is a numpy array.</p>
151<ul class="simple">
152<li>For 2D, a list of numpy arrays are expected: [qx_prime,qy_prime],
153where 1D arrays,</li>
154</ul>
155<p>qx_prime = [ qx[0], qx[1], qx[2], ....]
156and
157qy_prime = [ qy[0], qy[1], qy[2], ....]</p>
158<p>Then get
159q = numpy.sqrt(qx_prime^2+qy_prime^2)</p>
160<p>that is a qr in 1D array;
161q = [q[0], q[1], q[2], ....]</p>
162<table class="docutils field-list" frame="void" rules="none">
163<col class="field-name" />
164<col class="field-body" />
165<tbody valign="top">
166<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
167is supported for python models, thus C-models should have</p>
168<blockquote class="last">
169<div><p>their own evalDistribution methods.</p>
170</div></blockquote>
171</td>
172</tr>
173</tbody>
174</table>
175<p>The method is then called the following way:</p>
176<p>evalDistribution(q)
177where q is a numpy array.</p>
178<table class="docutils field-list" frame="void" rules="none">
179<col class="field-name" />
180<col class="field-body" />
181<tbody valign="top">
182<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]
183where qx,qy are 1D ndarrays</td>
184</tr>
185</tbody>
186</table>
187</dd></dl>
188
189<dl class="method">
190<dt id="sans.models.TwoLorentzianModel.TwoLorentzianModel.getDispParamList">
191<tt class="descname">getDispParamList</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TwoLorentzianModel.TwoLorentzianModel.getDispParamList" title="Permalink to this definition">¶</a></dt>
192<dd><p>Return a list of all available parameters for the model</p>
193</dd></dl>
194
195<dl class="method">
196<dt id="sans.models.TwoLorentzianModel.TwoLorentzianModel.getParam">
197<tt class="descname">getParam</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TwoLorentzianModel.TwoLorentzianModel.getParam" title="Permalink to this definition">¶</a></dt>
198<dd><p>Set the value of a model parameter</p>
199<table class="docutils field-list" frame="void" rules="none">
200<col class="field-name" />
201<col class="field-body" />
202<tbody valign="top">
203<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>name</strong> &#8211; name of the parameter</td>
204</tr>
205</tbody>
206</table>
207</dd></dl>
208
209<dl class="method">
210<dt id="sans.models.TwoLorentzianModel.TwoLorentzianModel.getParamList">
211<tt class="descname">getParamList</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TwoLorentzianModel.TwoLorentzianModel.getParamList" title="Permalink to this definition">¶</a></dt>
212<dd><p>Return a list of all available parameters for the model</p>
213</dd></dl>
214
215<dl class="method">
216<dt id="sans.models.TwoLorentzianModel.TwoLorentzianModel.getParamListWithToken">
217<tt class="descname">getParamListWithToken</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TwoLorentzianModel.TwoLorentzianModel.getParamListWithToken" title="Permalink to this definition">¶</a></dt>
218<dd></dd></dl>
219
220<dl class="method">
221<dt id="sans.models.TwoLorentzianModel.TwoLorentzianModel.getParamWithToken">
222<tt class="descname">getParamWithToken</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TwoLorentzianModel.TwoLorentzianModel.getParamWithToken" title="Permalink to this definition">¶</a></dt>
223<dd></dd></dl>
224
225<dl class="method">
226<dt id="sans.models.TwoLorentzianModel.TwoLorentzianModel.is_fittable">
227<tt class="descname">is_fittable</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TwoLorentzianModel.TwoLorentzianModel.is_fittable" title="Permalink to this definition">¶</a></dt>
228<dd><p>Check if a given parameter is fittable or not</p>
229<table class="docutils field-list" frame="void" rules="none">
230<col class="field-name" />
231<col class="field-body" />
232<tbody valign="top">
233<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>
234</tr>
235</tbody>
236</table>
237</dd></dl>
238
239<dl class="method">
240<dt id="sans.models.TwoLorentzianModel.TwoLorentzianModel.run">
241<tt class="descname">run</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TwoLorentzianModel.TwoLorentzianModel.run" title="Permalink to this definition">¶</a></dt>
242<dd><p>Evaluate the model</p>
243<p>param x: input q-value (float or [float, float] as [r, theta])
244return: (scattering value)</p>
245</dd></dl>
246
247<dl class="method">
248<dt id="sans.models.TwoLorentzianModel.TwoLorentzianModel.runXY">
249<tt class="descname">runXY</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TwoLorentzianModel.TwoLorentzianModel.runXY" title="Permalink to this definition">¶</a></dt>
250<dd><p>Evaluate the model</p>
251<p>param x: input q-value (float or [float, float] as [qx, qy])
252return: scattering value</p>
253</dd></dl>
254
255<dl class="method">
256<dt id="sans.models.TwoLorentzianModel.TwoLorentzianModel.setParam">
257<tt class="descname">setParam</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TwoLorentzianModel.TwoLorentzianModel.setParam" title="Permalink to this definition">¶</a></dt>
258<dd><p>Set the value of a model parameter</p>
259<table class="docutils field-list" frame="void" rules="none">
260<col class="field-name" />
261<col class="field-body" />
262<tbody valign="top">
263<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
264<li><strong>name</strong> &#8211; name of the parameter</li>
265<li><strong>value</strong> &#8211; value of the parameter</li>
266</ul>
267</td>
268</tr>
269</tbody>
270</table>
271</dd></dl>
272
273<dl class="method">
274<dt id="sans.models.TwoLorentzianModel.TwoLorentzianModel.setParamWithToken">
275<tt class="descname">setParamWithToken</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.TwoLorentzianModel.TwoLorentzianModel.setParamWithToken" title="Permalink to this definition">¶</a></dt>
276<dd></dd></dl>
277
278</dd></dl>
279
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292<li><a class="reference internal" href="#sans-models-twolorentzianmodel"><tt class="docutils literal"><span class="pre">sans.models.TwoLorentzianModel</span></tt></a></li>
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296
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