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