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  185. <li class="toctree-l1"><a class="reference internal" href="../../../install.html">How to install the CBD framework?</a></li>
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  191. <li class="toctree-l1"><a class="reference internal" href="../../../examples/SinGen.html">Sine Generator</a></li>
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    271. 

  271.               
    272. 

  272.   <h1>Source code for CBD.lib.io</h1><div class="highlight"><pre>
    273. 

  273. <span></span><span class="sd">&quot;&quot;&quot;</span>
    274. 

  274. <span class="sd">This module contains the library building blocks to handle</span>
    275. 

  275. <span class="sd">input/output in the form of file interaction.</span>
    276. 

  276. <span class="sd">&quot;&quot;&quot;</span>
    277. 

  277. 

  278. <span class="kn">from</span> <span class="nn">CBD.CBD</span> <span class="kn">import</span> <span class="n">BaseBlock</span>
    279. 

  279. <span class="kn">import</span> <span class="nn">csv</span>
    280. 

  280. 

  281. <div class="viewcode-block" id="Interpolation"><a class="viewcode-back" href="../../../CBD.lib.io.html#CBD.lib.io.Interpolation">[docs]</a><span class="k">class</span> <span class="nc">Interpolation</span><span class="p">:</span>
    282. 

  282. 	<span class="sd">&quot;&quot;&quot;</span>
    283. 

  283. <span class="sd">	Helper class to handle CSV interpolations.</span>
    284. 

  284. <span class="sd">	&quot;&quot;&quot;</span>
    285. 

  285. 	<span class="n">FIRST</span> <span class="o">=</span> <span class="mi">0</span>
    286. 

  286. 	<span class="sd">&quot;&quot;&quot;Use the first value to interpolate.&quot;&quot;&quot;</span>
    287. 

  287. 

  288. 	<span class="n">LAST</span> <span class="o">=</span> <span class="mi">1</span>
    289. 

  289. 	<span class="sd">&quot;&quot;&quot;Use the last value to interpolate.&quot;&quot;&quot;</span>
    290. 

  290. 

  291. 	<span class="n">LINEAR</span> <span class="o">=</span> <span class="mi">2</span>
    292. 

  292. 	<span class="sd">&quot;&quot;&quot;Do a linear interpolation between the two values.&quot;&quot;&quot;</span>
    293. 

  293. 

  294. <div class="viewcode-block" id="Interpolation.interpolate"><a class="viewcode-back" href="../../../CBD.lib.io.html#CBD.lib.io.Interpolation.interpolate">[docs]</a>	<span class="nd">@staticmethod</span>
    295. 

  295. 	<span class="k">def</span> <span class="nf">interpolate</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">,</span> <span class="n">t</span><span class="p">,</span> <span class="n">method</span><span class="o">=</span><span class="n">FIRST</span><span class="p">):</span>
    296. 

  296. 		<span class="sd">&quot;&quot;&quot;</span>
    297. 

  297. <span class="sd">		Interpolates between two elements. When :code:`t` corresponds to :code:`a[0]`,</span>
    298. 

  298. <span class="sd">		:code:`a[1]` will always be returned.</span>
    299. 

  299. 

  300. <span class="sd">		Args:</span>
    301. 

  301. <span class="sd">			a (tuple):      A pair :code:`(time, value)`; representing the first element.</span>
    302. 

  302. <span class="sd">			b (tuple):      A pair :code:`(time, value)`; representing the second element.</span>
    303. 

  303. <span class="sd">			t (float):      The time at which the interpolation happens.</span>
    304. 

  304. <span class="sd">			method (int):   The interpolation method to use.</span>
    305. 

  305. 

  306. <span class="sd">		Raises:</span>
    307. 

  307. <span class="sd">			AssertionError: When :code:`a[0] &lt;= t &lt; b[0]` is not satisfied.</span>
    308. 

  308. <span class="sd">		&quot;&quot;&quot;</span>
    309. 

  309. 		<span class="k">assert</span> <span class="n">a</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">&lt;=</span> <span class="n">t</span> <span class="o">&lt;</span> <span class="n">b</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
    310. 

  310. 		<span class="k">if</span> <span class="n">t</span> <span class="o">==</span> <span class="n">a</span><span class="p">[</span><span class="mi">0</span><span class="p">]:</span>
    311. 

  311. 			<span class="k">return</span> <span class="n">a</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
    312. 

  312. 		<span class="k">if</span> <span class="n">method</span> <span class="o">==</span> <span class="n">Interpolation</span><span class="o">.</span><span class="n">FIRST</span><span class="p">:</span>
    313. 

  313. 			<span class="k">return</span> <span class="n">a</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
    314. 

  314. 		<span class="k">if</span> <span class="n">method</span> <span class="o">==</span> <span class="n">Interpolation</span><span class="o">.</span><span class="n">LAST</span><span class="p">:</span>
    315. 

  315. 			<span class="k">return</span> <span class="n">b</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
    316. 

  316. 		<span class="k">if</span> <span class="n">method</span> <span class="o">==</span> <span class="n">Interpolation</span><span class="o">.</span><span class="n">LINEAR</span><span class="p">:</span>
    317. 

  317. 			<span class="k">return</span> <span class="p">(</span><span class="n">b</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="o">-</span> <span class="n">a</span><span class="p">[</span><span class="mi">1</span><span class="p">])</span> <span class="o">/</span> <span class="p">(</span><span class="n">b</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">-</span> <span class="n">a</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> <span class="o">*</span> <span class="p">(</span><span class="n">t</span> <span class="o">-</span> <span class="n">a</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> <span class="o">+</span> <span class="n">a</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span></div></div>
    318. 

  318. 

  319. 

  320. <div class="viewcode-block" id="ReadCSV"><a class="viewcode-back" href="../../../CBD.lib.io.html#CBD.lib.io.ReadCSV">[docs]</a><span class="k">class</span> <span class="nc">ReadCSV</span><span class="p">(</span><span class="n">BaseBlock</span><span class="p">):</span>
    321. 

  321. 	<span class="sd">&quot;&quot;&quot;</span>
    322. 

  322. <span class="sd">	Reads data from a CSV file and outputs it on the corresponding timestamps.</span>
    323. 

  323. <span class="sd">	The output ports are defined by the read CSV columns.</span>
    324. 

  324. 

  325. <span class="sd">	Warning:</span>
    326. 

  326. <span class="sd">		It is required to have a column that represents the time. Furthermore,</span>
    327. 

  327. <span class="sd">		the dataset must be sorted w.r.t. this column.</span>
    328. 

  328. 

  329. <span class="sd">	Important:</span>
    330. 

  330. <span class="sd">		When repeating, the last value of the CSV is used for time 0.0, hence it</span>
    331. 

  331. <span class="sd">		is prohibited to use time 0 in your CSV.</span>
    332. 

  332. 

  333. <span class="sd">	Args:</span>
    334. 

  334. <span class="sd">		block_name (str):       The name of the block.</span>
    335. 

  335. <span class="sd">		file_name (str):        The name of the CSV to read.</span>
    336. 

  336. <span class="sd">		hold (Interpolation):   How the data should be interpreted if the time falls</span>
    337. 

  337. <span class="sd">								in-between the records of the (sampled) CSV.</span>
    338. 

  338. <span class="sd">		time_col (str):         The name of the column identifying the time.</span>
    339. 

  339. <span class="sd">								Defaults to :code:`&quot;time&quot;`.</span>
    340. 

  340. <span class="sd">		repeat (bool):          When :code:`True`, the CSV will repeat when at end.</span>
    341. 

  341. <span class="sd">								Additionally, when the time is before the first time</span>
    342. 

  342. <span class="sd">								in the file, an interpolation is done between the last</span>
    343. 

  343. <span class="sd">								read and first read value. When :code:`False`, the</span>
    344. 

  344. <span class="sd">								first and last values will be outputted when lower/higher</span>
    345. 

  345. <span class="sd">								than the predefined range of times.</span>
    346. 

  346. <span class="sd">								Defaults to :code:`False`.</span>
    347. 

  347. 

  348. <span class="sd">	Keyword Args:</span>
    349. 

  349. <span class="sd">		columns (iter):         A :class:`set`, :class:`list` or a :class:`dict`,</span>
    350. 

  350. <span class="sd">								identifying all columns that need to be read. Must</span>
    351. 

  351. <span class="sd">								correspond to the columns that can be found in the</span>
    352. 

  352. <span class="sd">								file itself. When :code:`None` (default), all</span>
    353. 

  353. <span class="sd">								columns from the first line of the file will be used.</span>
    354. 

  354. <span class="sd">								In the case of a :class:`dict`, it is expected the</span>
    355. 

  355. <span class="sd">								keys are the column names and the values refer to</span>
    356. 

  356. <span class="sd">								the data types of these columns.</span>
    357. 

  357. <span class="sd">								I.e. :code:`{ &quot;time&quot;: float }` reads the :code:`time`</span>
    358. 

  358. <span class="sd">								column as floats.</span>
    359. 

  359. <span class="sd">								For :class:`set` and :class:`list`, the data is read</span>
    360. 

  360. <span class="sd">								as strings.</span>
    361. 

  361. <span class="sd">		dtype:                  The default data type of the CSV. This does not override</span>
    362. 

  362. <span class="sd">								optional values set by the :code:`columns` argument when it&#39;s</span>
    363. 

  363. <span class="sd">								a :class:`dict`. Defaults to :code:`float`.</span>
    364. 

  364. <span class="sd">		dialect (str):          The dialect for parsing the data. Defaults to :code:`excel`.</span>
    365. 

  365. <span class="sd">		nan (Any):              The value to insert when some fields are missing data.</span>
    366. 

  366. <span class="sd">								Defaults to :code:`None`.</span>
    367. 

  367. <span class="sd">		**:                     For other values, take a look at the</span>
    368. 

  368. <span class="sd">								`CSV Dialect and Formatting Parameters &lt;https://docs.python.org/3/library/csv.html#csv-fmt-params&gt;`_.</span>
    369. 

  369. <span class="sd">	&quot;&quot;&quot;</span>
    370. 

  370. 	<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">block_name</span><span class="p">,</span> <span class="n">file_name</span><span class="p">,</span> <span class="n">hold</span><span class="o">=</span><span class="n">Interpolation</span><span class="o">.</span><span class="n">FIRST</span><span class="p">,</span> <span class="n">time_col</span><span class="o">=</span><span class="s2">&quot;time&quot;</span><span class="p">,</span> <span class="n">repeat</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
    371. 

  371. 		<span class="bp">self</span><span class="o">.</span><span class="n">repeat</span> <span class="o">=</span> <span class="n">repeat</span>
    372. 

  372. 		<span class="bp">self</span><span class="o">.</span><span class="n">time_col</span> <span class="o">=</span> <span class="n">time_col</span>
    373. 

  373. 		<span class="bp">self</span><span class="o">.</span><span class="n">__read_file</span><span class="p">(</span><span class="n">file_name</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
    374. 

  374. 		<span class="n">BaseBlock</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">block_name</span><span class="p">,</span> <span class="p">[],</span> <span class="nb">list</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">data</span><span class="o">.</span><span class="n">keys</span><span class="p">()))</span>
    375. 

  375. 		<span class="bp">self</span><span class="o">.</span><span class="n">hold</span> <span class="o">=</span> <span class="n">hold</span>
    376. 

  376. 		<span class="bp">self</span><span class="o">.</span><span class="n">index</span> <span class="o">=</span> <span class="o">-</span><span class="mi">1</span>
    377. 

  377. 

  378. 	<span class="k">def</span> <span class="nf">__read_file</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">file_name</span><span class="p">,</span> <span class="n">columns</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">dtype</span><span class="o">=</span><span class="nb">float</span><span class="p">,</span> <span class="n">dialect</span><span class="o">=</span><span class="s1">&#39;excel&#39;</span><span class="p">,</span> <span class="n">nan</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
    379. 

  379. 		<span class="bp">self</span><span class="o">.</span><span class="n">data</span> <span class="o">=</span> <span class="p">{}</span>
    380. 

  380. 		<span class="k">if</span> <span class="n">columns</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">time_col</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span>
    381. 

  381. 			<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">columns</span><span class="p">,</span> <span class="nb">list</span><span class="p">):</span>
    382. 

  382. 				<span class="n">columns</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">time_col</span><span class="p">)</span>
    383. 

  383. 			<span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">columns</span><span class="p">,</span> <span class="nb">set</span><span class="p">):</span>
    384. 

  384. 				<span class="n">columns</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">time_col</span><span class="p">)</span>
    385. 

  385. 			<span class="k">elif</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">columns</span><span class="p">,</span> <span class="nb">dict</span><span class="p">):</span>
    386. 

  386. 				<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">&quot;Invalid column iterable &#39;</span><span class="si">{}</span><span class="s2">&#39;&quot;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="nb">type</span><span class="p">(</span><span class="n">columns</span><span class="p">)))</span>
    387. 

  387. 		<span class="k">if</span> <span class="n">columns</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">columns</span><span class="p">,</span> <span class="nb">dict</span><span class="p">):</span>
    388. 

  388. 			<span class="n">columns</span><span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">time_col</span><span class="p">]</span> <span class="o">=</span> <span class="nb">float</span>
    389. 

  389. 			<span class="n">dtype</span> <span class="o">=</span> <span class="nb">str</span>
    390. 

  390. 		<span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="n">file_name</span><span class="p">)</span> <span class="k">as</span> <span class="n">file</span><span class="p">:</span>
    391. 

  391. 			<span class="n">reader</span> <span class="o">=</span> <span class="n">csv</span><span class="o">.</span><span class="n">DictReader</span><span class="p">(</span><span class="n">file</span><span class="p">,</span> <span class="n">restkey</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">restval</span><span class="o">=</span><span class="n">nan</span><span class="p">,</span> <span class="n">dialect</span><span class="o">=</span><span class="n">dialect</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
    392. 

  392. 			<span class="k">for</span> <span class="n">row</span> <span class="ow">in</span> <span class="n">reader</span><span class="p">:</span>
    393. 

  393. 				<span class="k">if</span> <span class="n">columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
    394. 

  394. 					<span class="n">columns</span> <span class="o">=</span> <span class="n">row</span><span class="o">.</span><span class="n">keys</span><span class="p">()</span>
    395. 

  395. 				<span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span>
    396. 

  396. 					<span class="k">if</span> <span class="n">col</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">row</span><span class="o">.</span><span class="n">keys</span><span class="p">():</span>
    397. 

  397. 						<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">&quot;Unknown column &#39;</span><span class="si">{}</span><span class="s2">&#39; in CSV&quot;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">col</span><span class="p">))</span>
    398. 

  398. 					<span class="n">value</span> <span class="o">=</span> <span class="n">dtype</span><span class="p">(</span><span class="n">row</span><span class="p">[</span><span class="n">col</span><span class="p">])</span>
    399. 

  399. 					<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">columns</span><span class="p">,</span> <span class="nb">dict</span><span class="p">):</span>
    400. 

  400. 						<span class="n">value</span> <span class="o">=</span> <span class="n">columns</span><span class="p">[</span><span class="n">col</span><span class="p">](</span><span class="n">value</span><span class="p">)</span>
    401. 

  401. 					<span class="bp">self</span><span class="o">.</span><span class="n">data</span><span class="o">.</span><span class="n">setdefault</span><span class="p">(</span><span class="n">col</span><span class="p">,</span> <span class="p">[])</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
    402. 

  402. 		<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">data</span><span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">time_col</span><span class="p">])</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
    403. 

  403. 			<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">&quot;CSV is empty&quot;</span><span class="p">)</span>
    404. 

  404. 		<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">repeat</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">data</span><span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">time_col</span><span class="p">][</span><span class="mi">0</span><span class="p">]</span> <span class="o">==</span> <span class="mf">0.0</span><span class="p">:</span>
    405. 

  405. 			<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">&quot;A repeating CSV series must not start at time 0&quot;</span><span class="p">)</span>
    406. 

  406. 

  407. <div class="viewcode-block" id="ReadCSV.compute"><a class="viewcode-back" href="../../../CBD.lib.io.html#CBD.lib.io.ReadCSV.compute">[docs]</a>	<span class="k">def</span> <span class="nf">compute</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">curIteration</span><span class="p">):</span>
    408. 

  408. 		<span class="n">time</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">getClock</span><span class="p">()</span><span class="o">.</span><span class="n">getTime</span><span class="p">()</span>
    409. 

  409. 		<span class="n">T</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">data</span><span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">time_col</span><span class="p">][</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span>
    410. 

  410. 		<span class="n">L</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">data</span><span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">time_col</span><span class="p">])</span>
    411. 

  411. 		<span class="k">if</span> <span class="n">L</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span>
    412. 

  412. 			<span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">data</span><span class="p">:</span>
    413. 

  413. 				<span class="bp">self</span><span class="o">.</span><span class="n">appendToSignal</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">data</span><span class="p">[</span><span class="n">col</span><span class="p">][</span><span class="mi">0</span><span class="p">],</span> <span class="n">col</span><span class="p">)</span>
    414. 

  414. 			<span class="k">return</span>
    415. 

  415. 		<span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">repeat</span><span class="p">:</span>
    416. 

  416. 			<span class="n">first_time</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">data</span><span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">time_col</span><span class="p">][</span><span class="mi">0</span><span class="p">]</span>
    417. 

  417. 			<span class="k">if</span> <span class="n">time</span> <span class="o">&lt;=</span> <span class="n">first_time</span><span class="p">:</span>
    418. 

  418. 				<span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">data</span><span class="p">:</span>
    419. 

  419. 					<span class="bp">self</span><span class="o">.</span><span class="n">appendToSignal</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">data</span><span class="p">[</span><span class="n">col</span><span class="p">][</span><span class="mi">0</span><span class="p">],</span> <span class="n">col</span><span class="p">)</span>
    420. 

  420. 				<span class="k">return</span>
    421. 

  421. 			<span class="k">elif</span> <span class="n">time</span> <span class="o">&gt;=</span> <span class="n">T</span><span class="p">:</span>
    422. 

  422. 				<span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">data</span><span class="p">:</span>
    423. 

  423. 					<span class="bp">self</span><span class="o">.</span><span class="n">appendToSignal</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">data</span><span class="p">[</span><span class="n">col</span><span class="p">][</span><span class="o">-</span><span class="mi">1</span><span class="p">],</span> <span class="n">col</span><span class="p">)</span>
    424. 

  424. 				<span class="k">return</span>
    425. 

  425. 			<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">index</span> <span class="o">&lt;</span> <span class="mi">0</span><span class="p">:</span>
    426. 

  426. 				<span class="bp">self</span><span class="o">.</span><span class="n">index</span> <span class="o">=</span> <span class="mi">0</span>
    427. 

  427. 		<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">index</span> <span class="o">&lt;</span> <span class="mi">0</span><span class="p">:</span>
    428. 

  428. 			<span class="n">next_time</span> <span class="o">=</span> <span class="n">last_time</span> <span class="o">=</span> <span class="mf">0.0</span>
    429. 

  429. 		<span class="k">else</span><span class="p">:</span>
    430. 

  430. 			<span class="n">next_time</span> <span class="o">=</span> <span class="n">last_time</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">data</span><span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">time_col</span><span class="p">][</span><span class="bp">self</span><span class="o">.</span><span class="n">index</span><span class="p">]</span>
    431. 

  431. 		<span class="k">while</span> <span class="n">next_time</span> <span class="o">&lt;=</span> <span class="n">time</span><span class="p">:</span>
    432. 

  432. 			<span class="bp">self</span><span class="o">.</span><span class="n">index</span> <span class="o">+=</span> <span class="mi">1</span>
    433. 

  433. 			<span class="n">last_time</span> <span class="o">=</span> <span class="n">next_time</span>
    434. 

  434. 			<span class="n">next_time</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">data</span><span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">time_col</span><span class="p">][</span><span class="bp">self</span><span class="o">.</span><span class="n">index</span> <span class="o">%</span> <span class="n">L</span><span class="p">]</span> <span class="o">+</span> <span class="p">(</span><span class="n">T</span> <span class="o">*</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">index</span> <span class="o">//</span> <span class="n">L</span><span class="p">))</span>
    435. 

  435. 		<span class="bp">self</span><span class="o">.</span><span class="n">index</span> <span class="o">-=</span> <span class="mi">1</span>
    436. 

  436. 		<span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">data</span><span class="p">:</span>
    437. 

  437. 			<span class="n">a</span> <span class="o">=</span> <span class="n">last_time</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">data</span><span class="p">[</span><span class="n">col</span><span class="p">][</span><span class="bp">self</span><span class="o">.</span><span class="n">index</span> <span class="o">%</span> <span class="n">L</span><span class="p">]</span>
    438. 

  438. 			<span class="n">b</span> <span class="o">=</span> <span class="n">next_time</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">data</span><span class="p">[</span><span class="n">col</span><span class="p">][(</span><span class="bp">self</span><span class="o">.</span><span class="n">index</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)</span> <span class="o">%</span> <span class="n">L</span><span class="p">]</span>
    439. 

  439. 			<span class="bp">self</span><span class="o">.</span><span class="n">appendToSignal</span><span class="p">(</span><span class="n">Interpolation</span><span class="o">.</span><span class="n">interpolate</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">,</span> <span class="n">time</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">hold</span><span class="p">),</span> <span class="n">col</span><span class="p">)</span></div></div>
    440. 

  440. 

  441. <div class="viewcode-block" id="WriteCSV"><a class="viewcode-back" href="../../../CBD.lib.io.html#CBD.lib.io.WriteCSV">[docs]</a><span class="k">class</span> <span class="nc">WriteCSV</span><span class="p">(</span><span class="n">BaseBlock</span><span class="p">):</span>
    442. 

  442. 	<span class="sd">&quot;&quot;&quot;</span>
    443. 

  443. <span class="sd">	Outputs data to a CSV file.</span>
    444. 

  444. <span class="sd">	Every time a message is received, a new record is added to the file. At the</span>
    445. 

  445. <span class="sd">	end of the execution, when this block is destroyed, the file pointer will be</span>
    446. 

  446. <span class="sd">	closed (and removed).</span>
    447. 

  447. 

  448. <span class="sd">	Args:</span>
    449. 

  449. <span class="sd">		block_name (str):   The name of the block.</span>
    450. 

  450. <span class="sd">		filename (str):     The name of the file to write to. All contents of this</span>
    451. 

  451. <span class="sd">							file will be cleared.</span>
    452. 

  452. <span class="sd">		columns (list):     The (ordered) names of the columns in the file. These</span>
    453. 

  453. <span class="sd">							generally represent the input ports for this block.</span>
    454. 

  454. <span class="sd">		time_col (str):     The name for the column to store the times. If this</span>
    455. 

  455. <span class="sd">							corresponds to a value listed in the :code:`columns`</span>
    456. 

  456. <span class="sd">							argument, that column will be used to keep track of the</span>
    457. 

  457. <span class="sd">							time. There will **never** be an input port called</span>
    458. 

  458. <span class="sd">							:code:`time_col`. If this value is not located in the</span>
    459. 

  459. <span class="sd">							:code:`columns` list, a new column is added to the</span>
    460. 

  460. <span class="sd">							front of the provided columns.</span>
    461. 

  461. <span class="sd">							Defaults to :code:`&quot;time&quot;`.</span>
    462. 

  462. 

  463. <span class="sd">	:Keyword Arguments:</span>
    464. 

  464. <span class="sd">		Take a look at the `csv.DictWriter &lt;https://docs.python.org/3/library/csv.html#csv.DictWriter&gt;`_</span>
    465. 

  465. <span class="sd">		class for more info.</span>
    466. 

  466. 

  467. <span class="sd">	Tip:</span>
    468. 

  468. <span class="sd">		When the time-value is not needed in the CSV, just ignore it when reading it out again.</span>
    469. 

  469. <span class="sd">	&quot;&quot;&quot;</span>
    470. 

  470. 	<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">block_name</span><span class="p">,</span> <span class="n">filename</span><span class="p">,</span> <span class="n">columns</span><span class="p">,</span> <span class="n">time_col</span><span class="o">=</span><span class="s2">&quot;time&quot;</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
    471. 

  471. 		<span class="n">BaseBlock</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">block_name</span><span class="p">,</span> <span class="p">[</span><span class="n">c</span> <span class="k">for</span> <span class="n">c</span> <span class="ow">in</span> <span class="n">columns</span> <span class="k">if</span> <span class="n">c</span> <span class="o">!=</span> <span class="n">time_col</span><span class="p">],</span> <span class="p">[])</span>
    472. 

  472. 		<span class="bp">self</span><span class="o">.</span><span class="n">file</span> <span class="o">=</span> <span class="nb">open</span><span class="p">(</span><span class="n">filename</span><span class="p">,</span> <span class="s1">&#39;w&#39;</span><span class="p">)</span>
    473. 

  473. 		<span class="bp">self</span><span class="o">.</span><span class="n">columns</span> <span class="o">=</span> <span class="n">columns</span>
    474. 

  474. 		<span class="bp">self</span><span class="o">.</span><span class="n">time_col</span> <span class="o">=</span> <span class="n">time_col</span>
    475. 

  475. 		<span class="k">if</span> <span class="n">time_col</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span>
    476. 

  476. 			<span class="n">columns</span><span class="o">.</span><span class="n">insert</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="n">time_col</span><span class="p">)</span>
    477. 

  477. 		<span class="bp">self</span><span class="o">.</span><span class="n">writer</span> <span class="o">=</span> <span class="n">csv</span><span class="o">.</span><span class="n">DictWriter</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">file</span><span class="p">,</span> <span class="n">columns</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
    478. 

  478. 		<span class="bp">self</span><span class="o">.</span><span class="n">writer</span><span class="o">.</span><span class="n">writeheader</span><span class="p">()</span>
    479. 

  479. 

  480. 	<span class="k">def</span> <span class="fm">__del__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
    481. 

  481. 		<span class="bp">self</span><span class="o">.</span><span class="n">file</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
    482. 

  482. 

  483. <div class="viewcode-block" id="WriteCSV.compute"><a class="viewcode-back" href="../../../CBD.lib.io.html#CBD.lib.io.WriteCSV.compute">[docs]</a>	<span class="k">def</span> <span class="nf">compute</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">curIteration</span><span class="p">):</span>
    484. 

  484. 		<span class="n">inputs</span> <span class="o">=</span> <span class="p">{</span> <span class="n">col</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">getInputSignal</span><span class="p">(</span><span class="n">curIteration</span><span class="p">,</span> <span class="n">col</span><span class="p">)</span><span class="o">.</span><span class="n">value</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">columns</span> <span class="k">if</span> <span class="n">col</span> <span class="o">!=</span> <span class="bp">self</span><span class="o">.</span><span class="n">time_col</span> <span class="p">}</span>
    485. 

  485. 		<span class="n">inputs</span><span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">time_col</span><span class="p">]</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">getClock</span><span class="p">()</span><span class="o">.</span><span class="n">getTime</span><span class="p">()</span>
    486. 

  486. 

  487. 		<span class="bp">self</span><span class="o">.</span><span class="n">writer</span><span class="o">.</span><span class="n">writerow</span><span class="p">(</span><span class="n">inputs</span><span class="p">)</span></div></div>
    488. 

  488. </pre></div>
    489. 

  489. 

  490.              </article>
    491. 

  491.              
    492. 

  492.             </div>
    493. 

  493.             <footer>
    494. 

  494.   
    495. 

  495. 

  496.   <hr>
    497. 

  497. 

  498.   <div role="contentinfo">
    499. 

  499.     <p>
    500. 

  500.         &copy; Copyright 2020, Randy Paredis.
    501. 

  501. 

  502.     </p>
    503. 

  503.   </div>
    504. 

  504.     
    505. 

  505.       <div>
    506. 

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    507. 

  507.       </div>
    508. 

  508.      
    509. 

  509. 

  510. </footer>
    511. 

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  512.           </div>
    513. 

  513.         </div>
    514. 

  514. 

  515.         <div class="catalyst-content-right" id="catalyst-content-right">
    516. 

  516.           <div class="catalyst-right-menu" id="catalyst-right-menu">
    517. 

  517.             <div class="catalyst-side-scroll" id="catalyst-side-scroll-right">
    518. 

  518.               
    519. 

  519.             </div>
    520. 

  520.           </div>
    521. 

  521.         </div>
    522. 

  522.       </section>
    523. 

  523.     </div>
    524. 

  524. 

  525.   
    526. 

  526. 

  527. 

  528.   
    529. 

  529. 

  530.      
    531. 

  531.        <script type="text/javascript" id="documentation_options" data-url_root="../../../" src="../../../_static/documentation_options.js"></script>
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  541.   <script type="text/javascript" src="../../../_static/js/vendor/popper.min.js"></script>
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  542.   <script type="text/javascript" src="../../../_static/js/vendor/bootstrap.min.js"></script>
    543. 

  543.   <script type="text/javascript" src="../../../_static/js/theme.js"></script>
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    546. 

  546.       jQuery(function () {
    547. 

  547.           SphinxRtdTheme.Navigation.enable(true);
    548. 

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    549. 

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    550. 

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  551.   <!-- Begin Footer -->
    552. 

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  553.   <footer class="site-footer" id="site-footer">
    554. 

  554.     <div class="container footer-container">
    555. 

  555.       <div class="footer-logo-wrapper">
    556. 

  556.         <a href="https://catalyst-team.com/" class="footer-logo"></a>
    557. 

  557.       </div>
    558. 

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  559.       <div class="footer-links-wrapper">
    560. 

  560.         <div class="footer-links-col">
    561. 

  561.           <ul>
    562. 

  562.             <li class="list-title"><a href="https://github.com/catalyst-team">Ecosystem</a></li>
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  563.             <li><a class="nav-dropdown-item" href="https://alchemy.host">Alchemy</a></li>
    564. 

  564.             <li><a class="nav-dropdown-item" href="https://github.com/catalyst-team/catalyst">Catalyst</a></li>
    565. 

  565.             <li><a class="nav-dropdown-item" href="https://github.com/catalyst-team/reaction">Reaction</a></li>
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  571.             <li class="list-title"><a href="https://github.com/catalyst-team">Projects</a></li>
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    574. 

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    575. 

  575.             <li><a class="nav-dropdown-item" href="https://github.com/catalyst-team/detection">Detection</a></li>
    576. 

  576.             <li><a class="nav-dropdown-item" href="https://github.com/catalyst-team/segmentation">Segmentation</a></li>
    577. 

  577.             <li><a class="nav-dropdown-item" href="https://github.com/catalyst-team/gan">Catalyst.GAN</a></li>
    578. 

  578.           </ul>
    579. 

  579.         </div>
    580. 

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  581.         <div class="footer-links-col">
    582. 

  582.           <ul>
    583. 

  583.             <li class="list-title"><a href="https://catalyst-team.com/">Support</a></li>
    584. 

  584.             <li><a href="https://github.com/catalyst-team/catalyst/issues" target="_blank">Github Issues</a></li>
    585. 

  585.             <li><a href="https://github.com/catalyst-team/catalyst/blob/master/CONTRIBUTING.md" target="_blank">Contributing</a></li>
    586. 

  586.             <li><a href="https://www.patreon.com/catalyst_team" target="_blank">Patreon</a></li>
    587. 

  587.           </ul>
    588. 

  588.         </div>
    589. 

  589. 

  590.         <div class="footer-links-col follow-us-col">
    591. 

  591.           <div class="footer-social-icons">
    592. 

  592.             <a href="https://t.me/catalyst_team" target="_blank" class="telegram"></a>
    593. 

  593.             <a href="https://twitter.com/catalyst_core" target="_blank" class="twitter"></a>
    594. 

  594.             <a href="https://join.slack.com/t/catalyst-team-core/shared_invite/zt-d9miirnn-z86oKDzFMKlMG4fgFdZafw" target="_blank" class="ods"></a>
    595. 

  595.           </div>
    596. 

  596.         </div>
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  597.       </div>
    598. 

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    599. 

  599.   </footer>
    600. 

  600. 

  601. 

  602.   <!-- End Footer -->
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  604.   <!-- Begin Mobile Menu -->
    605. 

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  606.   <div class="mobile-main-menu">
    607. 

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    608. 

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    609. 

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    611. 

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    612. 

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    613. 

  613.       </div>
    614. 

  614.     </div>
    615. 

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  616.     <div class="mobile-main-menu-links-container">
    617. 

  617.       <div class="main-menu">
    618. 

  618.         <ul>
    619. 

  619.           <li>
    620. 

  620.             <a href="">Get Started</a>
    621. 

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    622. 

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  623.           <li>
    624. 

  624.             <a href="https://github.com/catalyst-team/catalyst">Github</a>
    625. 

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    626. 

  626.         </ul>
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    630. 

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  631.   <!-- End Mobile Menu -->
    632. 

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  633.   <script type="text/javascript" src="../../../_static/js/vendor/anchor.min.js"></script>
    634. 

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    636. 

  636.     $(document).ready(function() {
    637. 

  637.       mobileMenu.bind();
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    640. 

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    644. 

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  645.       // Add class to links that have code blocks, since we cannot create links in code blocks
    646. 

  646.       $("article.catalyst-article a span.pre").each(function(e) {
    647. 

  647.         $(this).closest("a").addClass("has-code");
    648. 

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