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56  <div class="section" id="dispersemodel">
57<h1>DisperseModel<a class="headerlink" href="#dispersemodel" title="Permalink to this headline">¶</a></h1>
58<div class="section" id="module-sans.models.DisperseModel">
59<span id="sans-models-dispersemodel"></span><h2><a class="reference internal" href="#module-sans.models.DisperseModel" title="sans.models.DisperseModel"><tt class="xref py py-mod docutils literal"><span class="pre">sans.models.DisperseModel</span></tt></a><a class="headerlink" href="#module-sans.models.DisperseModel" title="Permalink to this headline">¶</a></h2>
60<p>Wrapper for the Disperser class extension</p>
61<table class="docutils field-list" frame="void" rules="none">
62<col class="field-name" />
63<col class="field-body" />
64<tbody valign="top">
65<tr class="field"><th class="field-name">author:</th><td class="field-body">Mathieu Doucet / UTK</td>
66</tr>
67<tr class="field"><th class="field-name">contact:</th><td class="field-body"><a class="reference external" href="mailto:mathieu&#46;doucet&#37;&#52;&#48;nist&#46;gov">mathieu<span>&#46;</span>doucet<span>&#64;</span>nist<span>&#46;</span>gov</a></td>
68</tr>
69</tbody>
70</table>
71<dl class="class">
72<dt id="sans.models.DisperseModel.DisperseModel">
73<em class="property">class </em><tt class="descclassname">sans.models.DisperseModel.</tt><tt class="descname">DisperseModel</tt><big>(</big><em>model</em>, <em>paramList</em>, <em>sigmaList</em><big>)</big><a class="headerlink" href="#sans.models.DisperseModel.DisperseModel" title="Permalink to this definition">¶</a></dt>
74<dd><p>Bases: <tt class="xref py py-class docutils literal"><span class="pre">Disperser</span></tt>, <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>
75<p>Wrapper class for the Disperser extension
76Python class that takes a model and averages its output
77for a distribution of its parameters.</p>
78<p>The parameters to be varied are specified at instantiation time.
79The distributions are Gaussian, with std deviations specified for
80each parameter at instantiation time.</p>
81<p>Example:</p>
82<div class="highlight-python"><div class="highlight"><pre><span class="n">cyl</span> <span class="o">=</span> <span class="n">ModelFactory</span><span class="p">()</span><span class="o">.</span><span class="n">getModel</span><span class="p">(</span><span class="s">&quot;CylinderModel&quot;</span><span class="p">)</span>
83<span class="n">disp</span> <span class="o">=</span> <span class="n">DisperseModel</span><span class="p">(</span><span class="n">cyl</span><span class="p">,</span> <span class="p">[</span><span class="s">&#39;cyl_phi&#39;</span><span class="p">],</span> <span class="p">[</span><span class="mf">0.3</span><span class="p">])</span>
84<span class="n">disp</span><span class="o">.</span><span class="n">run</span><span class="p">([</span><span class="mf">0.01</span><span class="p">,</span> <span class="mf">1.57</span><span class="p">])</span>
85</pre></div>
86</div>
87<dl class="method">
88<dt id="sans.models.DisperseModel.DisperseModel.calculate_ER">
89<tt class="descname">calculate_ER</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.DisperseModel.DisperseModel.calculate_ER" title="Permalink to this definition">¶</a></dt>
90<dd></dd></dl>
91
92<dl class="method">
93<dt id="sans.models.DisperseModel.DisperseModel.clone">
94<tt class="descname">clone</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.DisperseModel.DisperseModel.clone" title="Permalink to this definition">¶</a></dt>
95<dd><p>Return a identical copy of self</p>
96</dd></dl>
97
98<dl class="method">
99<dt id="sans.models.DisperseModel.DisperseModel.evalDistribution">
100<tt class="descname">evalDistribution</tt><big>(</big><em>qdist</em><big>)</big><a class="headerlink" href="#sans.models.DisperseModel.DisperseModel.evalDistribution" title="Permalink to this definition">¶</a></dt>
101<dd><p>Evaluate a distribution of q-values.</p>
102<ul>
103<li><p class="first">For 1D, a numpy array is expected as input:</p>
104<blockquote>
105<div><p>evalDistribution(q)</p>
106</div></blockquote>
107</li>
108</ul>
109<p>where q is a numpy array.</p>
110<ul class="simple">
111<li>For 2D, a list of numpy arrays are expected: [qx_prime,qy_prime],
112where 1D arrays,</li>
113</ul>
114<p>qx_prime = [ qx[0], qx[1], qx[2], ....]
115and
116qy_prime = [ qy[0], qy[1], qy[2], ....]</p>
117<p>Then get
118q = numpy.sqrt(qx_prime^2+qy_prime^2)</p>
119<p>that is a qr in 1D array;
120q = [q[0], q[1], q[2], ....]</p>
121<table class="docutils field-list" frame="void" rules="none">
122<col class="field-name" />
123<col class="field-body" />
124<tbody valign="top">
125<tr class="field"><th class="field-name">Note :</th><td class="field-body"><p class="first">Due to 2D speed issue, no anisotropic scattering
126is supported for python models, thus C-models should have</p>
127<blockquote class="last">
128<div><p>their own evalDistribution methods.</p>
129</div></blockquote>
130</td>
131</tr>
132</tbody>
133</table>
134<p>The method is then called the following way:</p>
135<p>evalDistribution(q)
136where q is a numpy array.</p>
137<table class="docutils field-list" frame="void" rules="none">
138<col class="field-name" />
139<col class="field-body" />
140<tbody valign="top">
141<tr class="field"><th class="field-name">Parameters:</th><td class="field-body"><strong>qdist</strong> &#8211; ndarray of scalar q-values or list [qx,qy]
142where qx,qy are 1D ndarrays</td>
143</tr>
144</tbody>
145</table>
146</dd></dl>
147
148<dl class="method">
149<dt id="sans.models.DisperseModel.DisperseModel.getDispParamList">
150<tt class="descname">getDispParamList</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.DisperseModel.DisperseModel.getDispParamList" title="Permalink to this definition">¶</a></dt>
151<dd><p>Return a list of all available parameters for the model</p>
152</dd></dl>
153
154<dl class="method">
155<dt id="sans.models.DisperseModel.DisperseModel.getParam">
156<tt class="descname">getParam</tt><big>(</big><em>name</em><big>)</big><a class="headerlink" href="#sans.models.DisperseModel.DisperseModel.getParam" title="Permalink to this definition">¶</a></dt>
157<dd></dd></dl>
158
159<dl class="method">
160<dt id="sans.models.DisperseModel.DisperseModel.getParamList">
161<tt class="descname">getParamList</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.DisperseModel.DisperseModel.getParamList" title="Permalink to this definition">¶</a></dt>
162<dd><p>Return a list of all available parameters for the model</p>
163</dd></dl>
164
165<dl class="method">
166<dt id="sans.models.DisperseModel.DisperseModel.getParamListWithToken">
167<tt class="descname">getParamListWithToken</tt><big>(</big><em>token</em>, <em>member</em><big>)</big><a class="headerlink" href="#sans.models.DisperseModel.DisperseModel.getParamListWithToken" title="Permalink to this definition">¶</a></dt>
168<dd></dd></dl>
169
170<dl class="method">
171<dt id="sans.models.DisperseModel.DisperseModel.getParamWithToken">
172<tt class="descname">getParamWithToken</tt><big>(</big><em>name</em>, <em>token</em>, <em>member</em><big>)</big><a class="headerlink" href="#sans.models.DisperseModel.DisperseModel.getParamWithToken" title="Permalink to this definition">¶</a></dt>
173<dd></dd></dl>
174
175<dl class="method">
176<dt id="sans.models.DisperseModel.DisperseModel.is_fittable">
177<tt class="descname">is_fittable</tt><big>(</big><em>par_name</em><big>)</big><a class="headerlink" href="#sans.models.DisperseModel.DisperseModel.is_fittable" title="Permalink to this definition">¶</a></dt>
178<dd><p>Check if a given parameter is fittable or not</p>
179<table class="docutils field-list" frame="void" rules="none">
180<col class="field-name" />
181<col class="field-body" />
182<tbody valign="top">
183<tr class="field"><th class="field-name">Parameters:</th><td class="field-body"><strong>par_name</strong> &#8211; the parameter name to check</td>
184</tr>
185</tbody>
186</table>
187</dd></dl>
188
189<dl class="attribute">
190<dt id="sans.models.DisperseModel.DisperseModel.model">
191<tt class="descname">model</tt><a class="headerlink" href="#sans.models.DisperseModel.DisperseModel.model" title="Permalink to this definition">¶</a></dt>
192<dd><p>Model to disperse</p>
193</dd></dl>
194
195<dl class="attribute">
196<dt id="sans.models.DisperseModel.DisperseModel.params">
197<tt class="descname">params</tt><a class="headerlink" href="#sans.models.DisperseModel.DisperseModel.params" title="Permalink to this definition">¶</a></dt>
198<dd><p>Parameters</p>
199</dd></dl>
200
201<dl class="method">
202<dt id="sans.models.DisperseModel.DisperseModel.run">
203<tt class="descname">run</tt><big>(</big><em>x=0.0</em><big>)</big><a class="headerlink" href="#sans.models.DisperseModel.DisperseModel.run" title="Permalink to this definition">¶</a></dt>
204<dd><p>Evaluate the model</p>
205<table class="docutils field-list" frame="void" rules="none">
206<col class="field-name" />
207<col class="field-body" />
208<tbody valign="top">
209<tr class="field"><th class="field-name">Parameters:</th><td class="field-body"><strong>x</strong> &#8211; input q, or [q,phi]</td>
210</tr>
211<tr class="field"><th class="field-name">Returns:</th><td class="field-body">scattering function P(q)</td>
212</tr>
213</tbody>
214</table>
215</dd></dl>
216
217<dl class="method">
218<dt id="sans.models.DisperseModel.DisperseModel.runXY">
219<tt class="descname">runXY</tt><big>(</big><em>x=0.0</em><big>)</big><a class="headerlink" href="#sans.models.DisperseModel.DisperseModel.runXY" title="Permalink to this definition">¶</a></dt>
220<dd><p>Evaluate the model</p>
221<table class="docutils field-list" frame="void" rules="none">
222<col class="field-name" />
223<col class="field-body" />
224<tbody valign="top">
225<tr class="field"><th class="field-name">Parameters:</th><td class="field-body"><strong>x</strong> &#8211; input q, or [q,phi]</td>
226</tr>
227<tr class="field"><th class="field-name">Returns:</th><td class="field-body">scattering function P(q)</td>
228</tr>
229</tbody>
230</table>
231</dd></dl>
232
233<dl class="method">
234<dt id="sans.models.DisperseModel.DisperseModel.setParam">
235<tt class="descname">setParam</tt><big>(</big><em>name</em>, <em>value</em><big>)</big><a class="headerlink" href="#sans.models.DisperseModel.DisperseModel.setParam" title="Permalink to this definition">¶</a></dt>
236<dd></dd></dl>
237
238<dl class="method">
239<dt id="sans.models.DisperseModel.DisperseModel.setParamWithToken">
240<tt class="descname">setParamWithToken</tt><big>(</big><em>name</em>, <em>value</em>, <em>token</em>, <em>member</em><big>)</big><a class="headerlink" href="#sans.models.DisperseModel.DisperseModel.setParamWithToken" title="Permalink to this definition">¶</a></dt>
241<dd></dd></dl>
242
243</dd></dl>
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