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michaelbabynmichaelbabyn
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update streamline for plotly v3
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‎_posts/python/scientific/streamline/2015-06-30-streamline.html

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title: Python Streamline Plots | plotly
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display_as: scientific
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has_thumbnail: true
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order: 13
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ipynb: ~notebook_demo/43
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order: 13
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page_type: u-guide
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---
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{% raw %}
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<div class="prompt input_prompt">In&nbsp;[1]:</div>
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<div class=" highlight hl-ipython2"><pre><span></span><span class="kn">import</span> <span class="nn">plotly</span>
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<div class=" highlight hl-ipython3"><pre><span></span><span class="kn">import</span> <span class="nn">plotly</span>
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<span class="n">plotly</span><span class="o">.</span><span class="n">__version__</span>
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</pre></div>
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<pre>&#39;2.0.2&#39;</pre>
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<pre>&#39;3.4.1&#39;</pre>
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<div class=" highlight hl-ipython2"><pre><span></span><span class="kn">import</span> <span class="nn">plotly.plotly</span> <span class="kn">as</span> <span class="nn">py</span>
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<span class="kn">import</span> <span class="nn">plotly.figure_factory</span> <span class="kn">as</span> <span class="nn">ff</span>
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<div class=" highlight hl-ipython3"><pre><span></span><span class="kn">import</span> <span class="nn">plotly.plotly</span> <span class="k">as</span> <span class="nn">py</span>
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<span class="kn">import</span> <span class="nn">plotly.figure_factory</span> <span class="k">as</span> <span class="nn">ff</span>
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<span class="kn">import</span> <span class="nn">numpy</span> <span class="kn">as</span> <span class="nn">np</span>
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<span class="kn">import</span> <span class="nn">numpy</span> <span class="k">as</span> <span class="nn">np</span>
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<span class="n">x</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">linspace</span><span class="p">(</span><span class="o">-</span><span class="mi">3</span><span class="p">,</span> <span class="mi">3</span><span class="p">,</span> <span class="mi">100</span><span class="p">)</span>
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<span class="n">y</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">linspace</span><span class="p">(</span><span class="o">-</span><span class="mi">3</span><span class="p">,</span> <span class="mi">3</span><span class="p">,</span> <span class="mi">100</span><span class="p">)</span>
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<pre>/usr/local/lib/python2.7/site-packages/plotly/figure_factory/_streamline.py:357: RuntimeWarning:
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invalid value encountered in divide
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</pre>
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<iframe id="igraph" scrolling="no" style="border:none;" seamless="seamless" src="https://plot.ly/~PythonPlotBot/471.embed" height="525px" width="100%"></iframe>
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<div class=" highlight hl-ipython2"><pre><span></span><span class="kn">import</span> <span class="nn">plotly.plotly</span> <span class="kn">as</span> <span class="nn">py</span>
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<span class="kn">import</span> <span class="nn">plotly.figure_factory</span> <span class="kn">as</span> <span class="nn">ff</span>
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<span class="kn">import</span> <span class="nn">plotly.graph_objs</span> <span class="kn">as</span> <span class="nn">go</span>
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<div class=" highlight hl-ipython3"><pre><span></span><span class="kn">import</span> <span class="nn">plotly.plotly</span> <span class="k">as</span> <span class="nn">py</span>
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<span class="kn">import</span> <span class="nn">plotly.figure_factory</span> <span class="k">as</span> <span class="nn">ff</span>
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<span class="kn">import</span> <span class="nn">plotly.graph_objs</span> <span class="k">as</span> <span class="nn">go</span>
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<span class="kn">import</span> <span class="nn">numpy</span> <span class="kn">as</span> <span class="nn">np</span>
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<span class="kn">import</span> <span class="nn">numpy</span> <span class="k">as</span> <span class="nn">np</span>
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<span class="n">N</span> <span class="o">=</span> <span class="mi">50</span>
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<span class="n">x_start</span><span class="p">,</span> <span class="n">x_end</span> <span class="o">=</span> <span class="o">-</span><span class="mf">2.0</span><span class="p">,</span> <span class="mf">2.0</span>
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<span class="c1"># Add source point</span>
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<span class="n">source_point</span> <span class="o">=</span> <span class="n">go</span><span class="o">.</span><span class="n">Scatter</span><span class="p">(</span><span class="n">x</span><span class="o">=</span><span class="p">[</span><span class="n">x_source</span><span class="p">],</span> <span class="n">y</span><span class="o">=</span><span class="p">[</span><span class="n">y_source</span><span class="p">],</span>
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<span class="n">mode</span><span class="o">=</span><span class="s1">&#39;markers&#39;</span><span class="p">,</span>
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<span class="n">marker</span><span class="o">=</span><span class="n">go</span><span class="o">.</span><span class="n">Marker</span><span class="p">(</span><span class="n">size</span><span class="o">=</span><span class="mi">14</span><span class="p">),</span>
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<span class="n">marker</span><span class="o">=</span><span class="n">go</span><span class="o">.</span><span class="n">scatter</span><span class="o">.</span><span class="n">Marker</span><span class="p">(</span><span class="n">size</span><span class="o">=</span><span class="mi">14</span><span class="p">),</span>
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<span class="c1"># Add source point to figure</span>
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<span class="n">fig</span><span class="p">[</span><span class="s1">&#39;data&#39;</span><span class="p">]</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">source_point</span><span class="p">)</span>
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<span class="n">fig</span><span class="o">.</span><span class="n">add_trace</span><span class="p">(</span><span class="n">source_point</span><span class="p">)</span>
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<span class="n">py</span><span class="o">.</span><span class="n">iplot</span><span class="p">(</span><span class="n">fig</span><span class="p">,</span> <span class="n">filename</span><span class="o">=</span><span class="s1">&#39;streamline_source&#39;</span><span class="p">)</span>
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<div class=" highlight hl-ipython2"><pre><span></span><span class="n">help</span><span class="p">(</span><span class="n">ff</span><span class="o">.</span><span class="n">create_streamline</span><span class="p">)</span>
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<div class=" highlight hl-ipython3"><pre><span></span><span class="n">help</span><span class="p">(</span><span class="n">ff</span><span class="o">.</span><span class="n">create_streamline</span><span class="p">)</span>
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<pre>Help on function create_streamline in module plotly.figure_factory._streamline:
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‎_posts/python/scientific/streamline/streamline.ipynb

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{
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"data": {
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"'3.4.1'"
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"text": [
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"/usr/local/lib/python2.7/site-packages/plotly/figure_factory/_streamline.py:357: RuntimeWarning:\n",
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"\n",
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"invalid value encountered in divide\n",
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"# Add source point\n",
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"source_point = go.Scatter(x=[x_source], y=[y_source],\n",
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"metadata": {
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"display_name": "Python 3",
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