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56  <div class="section" id="cos">
57<h1>Cos<a class="headerlink" href="#cos" title="Permalink to this headline">¶</a></h1>
58<div class="section" id="module-sans.models.Cos">
59<span id="sans-models-cos"></span><h2><a class="reference internal" href="#module-sans.models.Cos"><tt class="xref py py-mod docutils literal"><span class="pre">sans.models.Cos</span></tt></a><a class="headerlink" href="#module-sans.models.Cos" title="Permalink to this headline">¶</a></h2>
60<p>Provide cos(x) function as a BaseComponent model</p>
61<dl class="class">
62<dt id="sans.models.Cos.Cos">
63<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>
64<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>
65<p>Class that evaluates a cos(x) model.</p>
66<dl class="method">
67<dt id="sans.models.Cos.Cos.calculate_ER">
68<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>
69<dd></dd></dl>
70
71<dl class="method">
72<dt id="sans.models.Cos.Cos.clone">
73<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>
74<dd>Return a identical copy of self</dd></dl>
75
76<dl class="method">
77<dt id="sans.models.Cos.Cos.evalDistribution">
78<tt class="descname">evalDistribution</tt><big>(</big><em>qdist</em><big>)</big><a class="headerlink" href="#sans.models.Cos.Cos.evalDistribution" title="Permalink to this definition">¶</a></dt>
79<dd><p>Evaluate a distribution of q-values.</p>
80<ul>
81<li><p class="first">For 1D, a numpy array is expected as input:</p>
82<blockquote>
83<p>evalDistribution(q)</p>
84</blockquote>
85</li>
86</ul>
87<p>where q is a numpy array.</p>
88<ul class="simple">
89<li>For 2D, a list of numpy arrays are expected: [qx_prime,qy_prime],
90where 1D arrays,</li>
91</ul>
92<p>qx_prime = [ qx[0], qx[1], qx[2], ....]
93and
94qy_prime = [ qy[0], qy[1], qy[2], ....]</p>
95<p>Then get
96q = numpy.sqrt(qx_prime^2+qy_prime^2)</p>
97<p>that is a qr in 1D array;
98q = [q[0], q[1], q[2], ....]</p>
99<table class="docutils field-list" frame="void" rules="none">
100<col class="field-name" />
101<col class="field-body" />
102<tbody valign="top">
103<tr class="field"><th class="field-name">Note :</th><td class="field-body"><p class="first">Due to 2D speed issue, no anisotropic scattering
104is supported for python models, thus C-models should have</p>
105<blockquote class="last">
106<p>their own evalDistribution methods.</p>
107</blockquote>
108</td>
109</tr>
110</tbody>
111</table>
112<p>The method is then called the following way:</p>
113<p>evalDistribution(q)
114where q is a numpy array.</p>
115<table class="docutils field-list" frame="void" rules="none">
116<col class="field-name" />
117<col class="field-body" />
118<tbody valign="top">
119<tr class="field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
120<li><strong>qdist</strong> &#8211; ndarray of scalar q-values or list [qx,qy]
121where qx,qy are 1D ndarrays</li>
122</ul>
123</td>
124</tr>
125</tbody>
126</table>
127</dd></dl>
128
129<dl class="method">
130<dt id="sans.models.Cos.Cos.getDispParamList">
131<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>
132<dd>Return a list of all available parameters for the model</dd></dl>
133
134<dl class="method">
135<dt id="sans.models.Cos.Cos.getParam">
136<tt class="descname">getParam</tt><big>(</big><em>name</em><big>)</big><a class="headerlink" href="#sans.models.Cos.Cos.getParam" title="Permalink to this definition">¶</a></dt>
137<dd><p>Set the value of a model parameter</p>
138<table class="docutils field-list" frame="void" rules="none">
139<col class="field-name" />
140<col class="field-body" />
141<tbody valign="top">
142<tr class="field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
143<li><strong>name</strong> &#8211; name of the parameter</li>
144</ul>
145</td>
146</tr>
147</tbody>
148</table>
149</dd></dl>
150
151<dl class="method">
152<dt id="sans.models.Cos.Cos.getParamList">
153<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>
154<dd>Return a list of all available parameters for the model</dd></dl>
155
156<dl class="method">
157<dt id="sans.models.Cos.Cos.getParamListWithToken">
158<tt class="descname">getParamListWithToken</tt><big>(</big><em>token</em>, <em>member</em><big>)</big><a class="headerlink" href="#sans.models.Cos.Cos.getParamListWithToken" title="Permalink to this definition">¶</a></dt>
159<dd></dd></dl>
160
161<dl class="method">
162<dt id="sans.models.Cos.Cos.getParamWithToken">
163<tt class="descname">getParamWithToken</tt><big>(</big><em>name</em>, <em>token</em>, <em>member</em><big>)</big><a class="headerlink" href="#sans.models.Cos.Cos.getParamWithToken" title="Permalink to this definition">¶</a></dt>
164<dd></dd></dl>
165
166<dl class="method">
167<dt id="sans.models.Cos.Cos.is_fittable">
168<tt class="descname">is_fittable</tt><big>(</big><em>par_name</em><big>)</big><a class="headerlink" href="#sans.models.Cos.Cos.is_fittable" title="Permalink to this definition">¶</a></dt>
169<dd><p>Check if a given parameter is fittable or not</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"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
175<li><strong>par_name</strong> &#8211; the parameter name to check</li>
176</ul>
177</td>
178</tr>
179</tbody>
180</table>
181</dd></dl>
182
183<dl class="method">
184<dt id="sans.models.Cos.Cos.run">
185<tt class="descname">run</tt><big>(</big><em>x=0.0</em><big>)</big><a class="headerlink" href="#sans.models.Cos.Cos.run" title="Permalink to this definition">¶</a></dt>
186<dd>Evaluate the model
187&#64;param x: input x, or [x, phi] [radian]
188&#64;return: cos(x) or cos(x*cos(phi))*cos(x*cos(phi))</dd></dl>
189
190<dl class="method">
191<dt id="sans.models.Cos.Cos.runXY">
192<tt class="descname">runXY</tt><big>(</big><em>x=0.0</em><big>)</big><a class="headerlink" href="#sans.models.Cos.Cos.runXY" title="Permalink to this definition">¶</a></dt>
193<dd>Evaluate the model
194&#64;param x: input x, or [x, y] [radian]
195&#64;return: cos(x) or cos(x)*cos(y)</dd></dl>
196
197<dl class="method">
198<dt id="sans.models.Cos.Cos.setParam">
199<tt class="descname">setParam</tt><big>(</big><em>name</em>, <em>value</em><big>)</big><a class="headerlink" href="#sans.models.Cos.Cos.setParam" title="Permalink to this definition">¶</a></dt>
200<dd><p>Set the value of a model parameter</p>
201<table class="docutils field-list" frame="void" rules="none">
202<col class="field-name" />
203<col class="field-body" />
204<tbody valign="top">
205<tr class="field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
206<li><strong>name</strong> &#8211; name of the parameter</li>
207<li><strong>value</strong> &#8211; value of the parameter</li>
208</ul>
209</td>
210</tr>
211</tbody>
212</table>
213</dd></dl>
214
215<dl class="method">
216<dt id="sans.models.Cos.Cos.setParamWithToken">
217<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.Cos.Cos.setParamWithToken" title="Permalink to this definition">¶</a></dt>
218<dd></dd></dl>
219
220</dd></dl>
221
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234<li><a class="reference internal" href="#module-sans.models.Cos"><tt class="docutils literal"><span class="pre">sans.models.Cos</span></tt></a></li>
235</ul>
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