156 lines
4.9 KiB
HTML
156 lines
4.9 KiB
HTML
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<!DOCTYPE html>
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<title>fit module — pylib 2019.5.19 documentation</title>
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<div class="section" id="module-fit">
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<span id="fit-module"></span><h1>fit module<a class="headerlink" href="#module-fit" title="Permalink to this headline">¶</a></h1>
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<dl class="function">
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<dt id="fit.gauss">
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<code class="descname">gauss</code><span class="sig-paren">(</span><em>x</em>, <em>*p</em><span class="sig-paren">)</span><a class="headerlink" href="#fit.gauss" title="Permalink to this definition">¶</a></dt>
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<dd><p>Gauss distribution function.</p>
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<dl class="field-list simple">
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<dt class="field-odd">Parameters</dt>
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<dd class="field-odd"><ul class="simple">
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<li><p><strong>x</strong> – positions where the gauss function will be calculated</p></li>
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<li><p><strong>p</strong> – <p>gauss parameters [a, b, c, d]:</p>
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<ul>
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<li><p>a – amplitude (integral = 1 if a = 1/(c*sqrt(2*pi)))</p></li>
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<li><p>b – expected value mu (position of maximum, default = 0)</p></li>
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<li><p>c – standard deviation sigma (variance sigma**2 = c**2)</p></li>
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<li><p>d – vertical offset (default = 0)</p></li>
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</ul>
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</p></li>
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</ul>
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</dd>
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<dt class="field-even">Returns</dt>
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<dd class="field-even"><p>array – gauss values at given positions x</p>
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</dd>
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</dl>
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</dd></dl>
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<dl class="function">
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<dt id="fit.gauss_fit">
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<code class="descname">gauss_fit</code><span class="sig-paren">(</span><em>x</em>, <em>y</em>, <em>e=None</em>, <em>x_fit=None</em>, <em>verbose=False</em><span class="sig-paren">)</span><a class="headerlink" href="#fit.gauss_fit" title="Permalink to this definition">¶</a></dt>
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<dd><p>Fit Gauss distribution function to data.</p>
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<dl class="field-list simple">
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<dt class="field-odd">Parameters</dt>
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<dd class="field-odd"><ul class="simple">
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<li><p><strong>x</strong> – positions</p></li>
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<li><p><strong>y</strong> – values</p></li>
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<li><p><strong>e</strong> – error values</p></li>
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<li><p><strong>x_fit</strong> – positions of fitted function (default steps is 3*len(x) but min 150)</p></li>
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</ul>
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</dd>
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<dt class="field-even">Returns</dt>
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<dd class="field-even"><p><ul class="simple">
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<li><p>y_fit – values</p></li>
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<li><p>popt – parameters of gauss distribution function (amplitude a, expected
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value mu, standard deviation sigma, vertical offset d)</p></li>
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<li><p>FWHM – full width at half maximum</p></li>
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</ul>
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</p>
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</dd>
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</dl>
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</dd></dl>
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<dl class="function">
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<dt id="fit.main">
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<code class="descname">main</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#fit.main" title="Permalink to this definition">¶</a></dt>
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<dd><p>test function</p>
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</dd></dl>
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<h3>Related Topics</h3>
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