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50  <h1>Source code for sas.fit.Loader</h1><div class="highlight"><pre>
51<span class="c"># class Loader  to load any king of file</span>
52<span class="c">#import wx</span>
53<span class="c">#import string</span>
54<span class="kn">import</span> <span class="nn">numpy</span>
55
56<div class="viewcode-block" id="Load"><a class="viewcode-back" href="../../../dev/api/sas.fit.html#sas.fit.Loader.Load">[docs]</a><span class="k">class</span> <span class="nc">Load</span><span class="p">:</span>
57    <span class="sd">&quot;&quot;&quot;</span>
58<span class="sd">    This class is loading values from given file or value giving by the user</span>
59<span class="sd">    &quot;&quot;&quot;</span>
60    <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">x</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">y</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">dx</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">dy</span><span class="o">=</span><span class="bp">None</span><span class="p">):</span>
61        <span class="k">raise</span> <span class="ne">NotImplementedError</span><span class="p">(</span><span class="s">&quot;a code search shows that this code is not active, and you are not seeing this message&quot;</span><span class="p">)</span>
62        <span class="c"># variable to store loaded values</span>
63        <span class="bp">self</span><span class="o">.</span><span class="n">x</span> <span class="o">=</span> <span class="n">x</span>
64        <span class="bp">self</span><span class="o">.</span><span class="n">y</span> <span class="o">=</span> <span class="n">y</span>
65        <span class="bp">self</span><span class="o">.</span><span class="n">dx</span> <span class="o">=</span> <span class="n">dx</span>
66        <span class="bp">self</span><span class="o">.</span><span class="n">dy</span> <span class="o">=</span> <span class="n">dy</span>
67        <span class="bp">self</span><span class="o">.</span><span class="n">filename</span> <span class="o">=</span> <span class="bp">None</span>
68       
69<div class="viewcode-block" id="Load.set_filename"><a class="viewcode-back" href="../../../dev/api/sas.fit.html#sas.fit.Loader.Load.set_filename">[docs]</a>    <span class="k">def</span> <span class="nf">set_filename</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">path</span><span class="o">=</span><span class="bp">None</span><span class="p">):</span>
70        <span class="sd">&quot;&quot;&quot;</span>
71<span class="sd">        Store path into a variable.If the user doesn&#39;t give </span>
72<span class="sd">        a path as a parameter a pop-up</span>
73<span class="sd">        window appears to select the file.</span>
74<span class="sd">        </span>
75<span class="sd">        :param path: the path given by the user</span>
76<span class="sd">        </span>
77<span class="sd">        &quot;&quot;&quot;</span>
78        <span class="bp">self</span><span class="o">.</span><span class="n">filename</span> <span class="o">=</span> <span class="n">path</span>
79       </div>
80<div class="viewcode-block" id="Load.get_filename"><a class="viewcode-back" href="../../../dev/api/sas.fit.html#sas.fit.Loader.Load.get_filename">[docs]</a>    <span class="k">def</span> <span class="nf">get_filename</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
81        <span class="sd">&quot;&quot;&quot; return the file&#39;s path&quot;&quot;&quot;</span>
82        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">filename</span>
83    </div>
84<div class="viewcode-block" id="Load.set_values"><a class="viewcode-back" href="../../../dev/api/sas.fit.html#sas.fit.Loader.Load.set_values">[docs]</a>    <span class="k">def</span> <span class="nf">set_values</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
85        <span class="sd">&quot;&quot;&quot; Store the values loaded from file in local variables&quot;&quot;&quot;</span>
86        <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">filename</span> <span class="o">==</span> <span class="bp">None</span><span class="p">:</span>
87            <span class="n">input_f</span> <span class="o">=</span>  <span class="nb">open</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">filename</span><span class="p">,</span> <span class="s">&#39;r&#39;</span><span class="p">)</span>
88            <span class="n">buff</span> <span class="o">=</span> <span class="n">input_f</span><span class="o">.</span><span class="n">read</span><span class="p">()</span>
89            <span class="n">lines</span> <span class="o">=</span> <span class="n">buff</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s">&#39;</span><span class="se">\n</span><span class="s">&#39;</span><span class="p">)</span>
90            <span class="bp">self</span><span class="o">.</span><span class="n">x</span> <span class="o">=</span> <span class="p">[]</span>
91            <span class="bp">self</span><span class="o">.</span><span class="n">y</span> <span class="o">=</span> <span class="p">[]</span>
92            <span class="bp">self</span><span class="o">.</span><span class="n">dx</span> <span class="o">=</span> <span class="p">[]</span> 
93            <span class="bp">self</span><span class="o">.</span><span class="n">dy</span> <span class="o">=</span> <span class="p">[]</span>
94            <span class="k">for</span> <span class="n">line</span> <span class="ow">in</span> <span class="n">lines</span><span class="p">:</span>
95                <span class="k">try</span><span class="p">:</span>
96                    <span class="n">toks</span> <span class="o">=</span> <span class="n">line</span><span class="o">.</span><span class="n">split</span><span class="p">()</span>
97                    <span class="n">x</span> <span class="o">=</span> <span class="nb">float</span><span class="p">(</span><span class="n">toks</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
98                    <span class="n">y</span> <span class="o">=</span> <span class="nb">float</span><span class="p">(</span><span class="n">toks</span><span class="p">[</span><span class="mi">1</span><span class="p">])</span>
99                    <span class="n">dy</span> <span class="o">=</span> <span class="nb">float</span><span class="p">(</span><span class="n">toks</span><span class="p">[</span><span class="mi">2</span><span class="p">])</span>
100                   
101                    <span class="bp">self</span><span class="o">.</span><span class="n">x</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">x</span><span class="p">)</span>
102                    <span class="bp">self</span><span class="o">.</span><span class="n">y</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">y</span><span class="p">)</span>
103                    <span class="bp">self</span><span class="o">.</span><span class="n">dy</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">dy</span><span class="p">)</span>
104                    <span class="bp">self</span><span class="o">.</span><span class="n">dx</span> <span class="o">=</span> <span class="n">numpy</span><span class="o">.</span><span class="n">zeros</span><span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">x</span><span class="p">))</span>
105                <span class="k">except</span><span class="p">:</span>
106                    <span class="k">print</span> <span class="s">&quot;READ ERROR&quot;</span><span class="p">,</span> <span class="n">line</span>
107            <span class="c"># Sanity check</span>
108            <span class="k">if</span> <span class="ow">not</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">x</span><span class="p">)</span> <span class="o">==</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">dx</span><span class="p">):</span>
109                <span class="k">raise</span> <span class="ne">ValueError</span><span class="p">,</span> <span class="s">&quot;x and dx have different length&quot;</span>
110            <span class="k">if</span> <span class="ow">not</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">y</span><span class="p">)</span> <span class="o">==</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">dy</span><span class="p">):</span>
111                <span class="k">raise</span> <span class="ne">ValueError</span><span class="p">,</span> <span class="s">&quot;y and dy have different length&quot;</span>
112           
113            </div>
114<div class="viewcode-block" id="Load.get_values"><a class="viewcode-back" href="../../../dev/api/sas.fit.html#sas.fit.Loader.Load.get_values">[docs]</a>    <span class="k">def</span> <span class="nf">get_values</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
115        <span class="sd">&quot;&quot;&quot; Return x, y, dx, dy&quot;&quot;&quot;</span>
116        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">x</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">y</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">dx</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">dy</span>
117    </div>
118<div class="viewcode-block" id="Load.load_data"><a class="viewcode-back" href="../../../dev/api/sas.fit.html#sas.fit.Loader.Load.load_data">[docs]</a>    <span class="k">def</span> <span class="nf">load_data</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">data</span><span class="p">):</span>
119        <span class="sd">&quot;&quot;&quot; Return plottable&quot;&quot;&quot;</span>
120        <span class="c">#load data</span>
121        <span class="n">data</span><span class="o">.</span><span class="n">x</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">x</span>
122        <span class="n">data</span><span class="o">.</span><span class="n">y</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">y</span>
123        <span class="n">data</span><span class="o">.</span><span class="n">dx</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">dx</span>
124        <span class="n">data</span><span class="o">.</span><span class="n">dy</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">dy</span>
125        <span class="c">#Load its View class</span>
126        <span class="c">#plottable.reset_view()</span>
127       
128    </div></div>
129<span class="k">if</span> <span class="n">__name__</span> <span class="o">==</span> <span class="s">&quot;__main__&quot;</span><span class="p">:</span> 
130    <span class="n">load</span> <span class="o">=</span> <span class="n">Load</span><span class="p">()</span>
131    <span class="n">load</span><span class="o">.</span><span class="n">set_filename</span><span class="p">(</span><span class="s">&quot;testdata_line.txt&quot;</span><span class="p">)</span>
132    <span class="k">print</span> <span class="n">load</span><span class="o">.</span><span class="n">get_filename</span><span class="p">()</span> 
133    <span class="n">load</span><span class="o">.</span><span class="n">set_values</span><span class="p">()</span>
134    <span class="k">print</span> <span class="n">load</span><span class="o">.</span><span class="n">get_values</span><span class="p">()</span>
135   
136           
137</pre></div>
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