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59  <div class="section" id="porodmodel">
60<h1>PorodModel<a class="headerlink" href="#porodmodel" title="Permalink to this headline">¶</a></h1>
61<div class="section" id="sans-models-porodmodel">
62<h2><a class="reference internal" href="#module-sans.models.PorodModel" title="sans.models.PorodModel"><tt class="xref py py-mod docutils literal"><span class="pre">sans.models.PorodModel</span></tt></a><a class="headerlink" href="#sans-models-porodmodel" title="Permalink to this headline">¶</a></h2>
63<span class="target" id="module-sans.models.PorodModel"></span><p>Provide I(q) = C/q^4,
64Porod function as a BaseComponent model</p>
65<dl class="class">
66<dt id="sans.models.PorodModel.PorodModel">
67<em class="property">class </em><tt class="descclassname">sans.models.PorodModel.</tt><tt class="descname">PorodModel</tt><a class="headerlink" href="#sans.models.PorodModel.PorodModel" 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 a Porod model.</p>
70<p>I(q) = scale/q^4 +background</p>
71<dl class="method">
72<dt id="sans.models.PorodModel.PorodModel.__add__">
73<tt class="descname">__add__</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.PorodModel.PorodModel.__add__" title="Permalink to this definition">¶</a></dt>
74<dd></dd></dl>
75
76<dl class="method">
77<dt id="sans.models.PorodModel.PorodModel.__div__">
78<tt class="descname">__div__</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.PorodModel.PorodModel.__div__" title="Permalink to this definition">¶</a></dt>
79<dd></dd></dl>
80
81<dl class="method">
82<dt id="sans.models.PorodModel.PorodModel.__init__">
83<tt class="descname">__init__</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.PorodModel.PorodModel.__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.PorodModel.PorodModel.__module__">
89<tt class="descname">__module__</tt><em class="property"> = 'sans.models.PorodModel'</em><a class="headerlink" href="#sans.models.PorodModel.PorodModel.__module__" title="Permalink to this definition">¶</a></dt>
90<dd></dd></dl>
91
92<dl class="method">
93<dt id="sans.models.PorodModel.PorodModel.__mul__">
94<tt class="descname">__mul__</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.PorodModel.PorodModel.__mul__" title="Permalink to this definition">¶</a></dt>
95<dd></dd></dl>
96
97<dl class="method">
98<dt id="sans.models.PorodModel.PorodModel.__str__">
99<tt class="descname">__str__</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.PorodModel.PorodModel.__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.PorodModel.PorodModel.__sub__">
112<tt class="descname">__sub__</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.PorodModel.PorodModel.__sub__" title="Permalink to this definition">¶</a></dt>
113<dd></dd></dl>
114
115<dl class="method">
116<dt id="sans.models.PorodModel.PorodModel._clone">
117<tt class="descname">_clone</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.PorodModel.PorodModel._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.PorodModel.PorodModel._porod">
124<tt class="descname">_porod</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.PorodModel.PorodModel._porod" title="Permalink to this definition">¶</a></dt>
125<dd></dd></dl>
126
127<dl class="method">
128<dt id="sans.models.PorodModel.PorodModel.calculate_ER">
129<tt class="descname">calculate_ER</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.PorodModel.PorodModel.calculate_ER" title="Permalink to this definition">¶</a></dt>
130<dd></dd></dl>
131
132<dl class="method">
133<dt id="sans.models.PorodModel.PorodModel.clone">
134<tt class="descname">clone</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.PorodModel.PorodModel.clone" title="Permalink to this definition">¶</a></dt>
135<dd><p>Returns a new object identical to the current object</p>
136</dd></dl>
137
138<dl class="method">
139<dt id="sans.models.PorodModel.PorodModel.evalDistribution">
140<tt class="descname">evalDistribution</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.PorodModel.PorodModel.evalDistribution" title="Permalink to this definition">¶</a></dt>
141<dd><p>Evaluate a distribution of q-values.</p>
142<ul>
143<li><p class="first">For 1D, a numpy array is expected as input:</p>
144<blockquote>
145<div><p>evalDistribution(q)</p>
146</div></blockquote>
147</li>
148</ul>
149<p>where q is a numpy array.</p>
150<ul class="simple">
151<li>For 2D, a list of numpy arrays are expected: [qx_prime,qy_prime],
152where 1D arrays,</li>
153</ul>
154<p>qx_prime = [ qx[0], qx[1], qx[2], ....]
155and
156qy_prime = [ qy[0], qy[1], qy[2], ....]</p>
157<p>Then get
158q = numpy.sqrt(qx_prime^2+qy_prime^2)</p>
159<p>that is a qr in 1D array;
160q = [q[0], q[1], q[2], ....]</p>
161<table class="docutils field-list" frame="void" rules="none">
162<col class="field-name" />
163<col class="field-body" />
164<tbody valign="top">
165<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
166is supported for python models, thus C-models should have</p>
167<blockquote class="last">
168<div><p>their own evalDistribution methods.</p>
169</div></blockquote>
170</td>
171</tr>
172</tbody>
173</table>
174<p>The method is then called the following way:</p>
175<p>evalDistribution(q)
176where q is a numpy array.</p>
177<table class="docutils field-list" frame="void" rules="none">
178<col class="field-name" />
179<col class="field-body" />
180<tbody valign="top">
181<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]
182where qx,qy are 1D ndarrays</td>
183</tr>
184</tbody>
185</table>
186</dd></dl>
187
188<dl class="method">
189<dt id="sans.models.PorodModel.PorodModel.getDispParamList">
190<tt class="descname">getDispParamList</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.PorodModel.PorodModel.getDispParamList" title="Permalink to this definition">¶</a></dt>
191<dd><p>Return a list of all available parameters for the model</p>
192</dd></dl>
193
194<dl class="method">
195<dt id="sans.models.PorodModel.PorodModel.getParam">
196<tt class="descname">getParam</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.PorodModel.PorodModel.getParam" title="Permalink to this definition">¶</a></dt>
197<dd><p>Set the value of a model parameter</p>
198<table class="docutils field-list" frame="void" rules="none">
199<col class="field-name" />
200<col class="field-body" />
201<tbody valign="top">
202<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>name</strong> &#8211; name of the parameter</td>
203</tr>
204</tbody>
205</table>
206</dd></dl>
207
208<dl class="method">
209<dt id="sans.models.PorodModel.PorodModel.getParamList">
210<tt class="descname">getParamList</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.PorodModel.PorodModel.getParamList" title="Permalink to this definition">¶</a></dt>
211<dd><p>Return a list of all available parameters for the model</p>
212</dd></dl>
213
214<dl class="method">
215<dt id="sans.models.PorodModel.PorodModel.getParamListWithToken">
216<tt class="descname">getParamListWithToken</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.PorodModel.PorodModel.getParamListWithToken" title="Permalink to this definition">¶</a></dt>
217<dd></dd></dl>
218
219<dl class="method">
220<dt id="sans.models.PorodModel.PorodModel.getParamWithToken">
221<tt class="descname">getParamWithToken</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.PorodModel.PorodModel.getParamWithToken" title="Permalink to this definition">¶</a></dt>
222<dd></dd></dl>
223
224<dl class="method">
225<dt id="sans.models.PorodModel.PorodModel.is_fittable">
226<tt class="descname">is_fittable</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.PorodModel.PorodModel.is_fittable" title="Permalink to this definition">¶</a></dt>
227<dd><p>Check if a given parameter is fittable or not</p>
228<table class="docutils field-list" frame="void" rules="none">
229<col class="field-name" />
230<col class="field-body" />
231<tbody valign="top">
232<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>
233</tr>
234</tbody>
235</table>
236</dd></dl>
237
238<dl class="method">
239<dt id="sans.models.PorodModel.PorodModel.run">
240<tt class="descname">run</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.PorodModel.PorodModel.run" title="Permalink to this definition">¶</a></dt>
241<dd><p>Evaluate the model
242&#64;param x: input q-value (float or [float, float] as [r, theta])
243&#64;return: (porod value)</p>
244</dd></dl>
245
246<dl class="method">
247<dt id="sans.models.PorodModel.PorodModel.runXY">
248<tt class="descname">runXY</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.PorodModel.PorodModel.runXY" 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 [qx, qy])
251&#64;return: porod value</p>
252</dd></dl>
253
254<dl class="method">
255<dt id="sans.models.PorodModel.PorodModel.setParam">
256<tt class="descname">setParam</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.PorodModel.PorodModel.setParam" title="Permalink to this definition">¶</a></dt>
257<dd><p>Set the value of a model parameter</p>
258<table class="docutils field-list" frame="void" rules="none">
259<col class="field-name" />
260<col class="field-body" />
261<tbody valign="top">
262<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
263<li><strong>name</strong> &#8211; name of the parameter</li>
264<li><strong>value</strong> &#8211; value of the parameter</li>
265</ul>
266</td>
267</tr>
268</tbody>
269</table>
270</dd></dl>
271
272<dl class="method">
273<dt id="sans.models.PorodModel.PorodModel.setParamWithToken">
274<tt class="descname">setParamWithToken</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.PorodModel.PorodModel.setParamWithToken" title="Permalink to this definition">¶</a></dt>
275<dd></dd></dl>
276
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