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--- | ||
permalink: numpy/append/ | ||
description: How to append values to a NumPy array. | ||
name: Append | plotly | ||
has_thumbnail: true | ||
thumbnail: thumbnail/numpy_array.jpg | ||
layout: user-guide | ||
name: Append | ||
language: numpy | ||
title: Append | plotly | ||
display_as: modify-the-array | ||
has_thumbnail: true | ||
page_type: example_index | ||
order: 1 | ||
--- | ||
{% raw %} | ||
<div class="cell border-box-sizing text_cell rendered"> | ||
<div class="prompt input_prompt"> | ||
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<div class="inner_cell"> | ||
<div class="text_cell_render border-box-sizing rendered_html"> | ||
<h4 id="New-to-Plotly?">New to Plotly?<a class="anchor-link" href="#New-to-Plotly?">¶</a></h4><p>Plotly's Python library is free and open source! <a href="https://plot.ly/python/getting-started/">Get started</a> by downloading the client and <a href="https://plot.ly/python/getting-started/">reading the primer</a>. | ||
<br>You can set up Plotly to work in <a href="https://plot.ly/python/getting-started/#initialization-for-online-plotting">online</a> or <a href="https://plot.ly/python/getting-started/#initialization-for-offline-plotting">offline</a> mode, or in <a href="https://plot.ly/python/getting-started/#start-plotting-online">jupyter notebooks</a>. | ||
<br>We also have a quick-reference <a href="https://images.plot.ly/plotly-documentation/images/python_cheat_sheet.pdf">cheatsheet</a> (new!) to help you get started!</p> | ||
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<h3 id="Imports">Imports<a class="anchor-link" href="#Imports">¶</a></h3><p>This tutorial imports <a href="http://www.numpy.org/">Numpy</a>.</p> | ||
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<div class=" highlight hl-ipython2"><pre><span></span><span class="kn">import</span> <span class="nn">numpy</span> <span class="kn">as</span> <span class="nn">np</span> | ||
<span class="n">np</span><span class="o">.</span><span class="n">__version__</span> | ||
</pre></div> | ||
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<pre>'1.11.2'</pre> | ||
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<h4 id="Append-Data">Append Data<a class="anchor-link" href="#Append-Data">¶</a></h4><p>Very similar in application to the core Python list method <code>.append()</code>, the <code>np.append()</code> function takes an <code>array</code> and some <code>values</code> in the form of an array and extends the length of the given array and adds the given item at the end.</p> | ||
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</div> | ||
</div> | ||
</div> | ||
<div class="cell border-box-sizing code_cell rendered"> | ||
<div class="input"> | ||
<div class="prompt input_prompt">In [2]:</div> | ||
<div class="inner_cell"> | ||
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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> | ||
<span class="kn">import</span> <span class="nn">plotly.graph_objs</span> <span class="kn">as</span> <span class="nn">go</span> | ||
<span class="kn">from</span> <span class="nn">plotly</span> <span class="kn">import</span> <span class="n">tools</span> | ||
<span class="kn">from</span> <span class="nn">plotly.tools</span> <span class="kn">import</span> <span class="n">FigureFactory</span> <span class="k">as</span> <span class="n">FF</span> | ||
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<span class="n">array</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">array</span><span class="p">([</span><span class="mi">1</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">,</span> <span class="mi">4</span><span class="p">,</span> <span class="mi">5</span><span class="p">])</span> | ||
<span class="n">longer_array</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">array</span><span class="p">,</span> <span class="p">[</span><span class="mi">6</span><span class="p">,</span> <span class="mi">7</span><span class="p">,</span> <span class="mi">8</span><span class="p">])</span> | ||
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<span class="n">trace1</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="n">array</span><span class="p">,</span> | ||
<span class="n">y</span><span class="o">=</span><span class="p">[</span><span class="mi">1</span> <span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="n">array</span><span class="p">],</span> | ||
<span class="n">mode</span><span class="o">=</span><span class="s1">'markers'</span><span class="p">,</span> | ||
<span class="n">marker</span><span class="o">=</span><span class="nb">dict</span><span class="p">(</span> | ||
<span class="n">size</span><span class="o">=</span><span class="p">[</span><span class="mi">5</span> <span class="o">+</span> <span class="mi">3</span><span class="o">*</span><span class="n">j</span> <span class="k">for</span> <span class="n">j</span> <span class="ow">in</span> <span class="n">array</span><span class="p">]</span> | ||
<span class="p">),</span> | ||
<span class="n">name</span><span class="o">=</span><span class="s1">'array'</span> | ||
<span class="p">)</span> | ||
<span class="n">trace2</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="n">longer_array</span><span class="p">,</span> | ||
<span class="n">y</span><span class="o">=</span><span class="p">[</span><span class="mi">2</span> <span class="k">for</span> <span class="n">j</span> <span class="ow">in</span> <span class="n">longer_array</span><span class="p">],</span> | ||
<span class="n">mode</span><span class="o">=</span><span class="s1">'markers'</span><span class="p">,</span> | ||
<span class="n">marker</span><span class="o">=</span><span class="nb">dict</span><span class="p">(</span> | ||
<span class="n">size</span><span class="o">=</span><span class="p">[</span><span class="mi">5</span> <span class="o">+</span> <span class="mi">3</span><span class="o">*</span><span class="n">j</span> <span class="k">for</span> <span class="n">j</span> <span class="ow">in</span> <span class="n">longer_array</span><span class="p">]</span> | ||
<span class="p">),</span> | ||
<span class="n">name</span><span class="o">=</span><span class="s1">'longer_array'</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">trace1</span><span class="p">,</span> <span class="n">trace2</span><span class="p">],</span> <span class="n">filename</span><span class="o">=</span><span class="s1">'numpy-array'</span><span class="p">)</span> | ||
</pre></div> | ||
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<iframe id="igraph" scrolling="no" style="border:none;" seamless="seamless" src="https://plot.ly/~AdamKulidjian/1688.embed" height="525px" width="100%"></iframe> | ||
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</div>{% endraw %} |
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{ | ||
"cells": [ | ||
{ | ||
"cell_type": "markdown", | ||
"metadata": {}, | ||
"source": [ | ||
"#### New to Plotly?\n", | ||
"Plotly's Python library is free and open source! [Get started](https://plot.ly/python/getting-started/) by downloading the client and [reading the primer](https://plot.ly/python/getting-started/).\n", | ||
"<br>You can set up Plotly to work in [online](https://plot.ly/python/getting-started/#initialization-for-online-plotting) or [offline](https://plot.ly/python/getting-started/#initialization-for-offline-plotting) mode, or in [jupyter notebooks](https://plot.ly/python/getting-started/#start-plotting-online).\n", | ||
"<br>We also have a quick-reference [cheatsheet](https://images.plot.ly/plotly-documentation/images/python_cheat_sheet.pdf) (new!) to help you get started!" | ||
] | ||
}, | ||
{ | ||
"cell_type": "markdown", | ||
"metadata": {}, | ||
"source": [ | ||
"### Imports\n", | ||
"This tutorial imports [Numpy](http://www.numpy.org/)." | ||
] | ||
}, | ||
{ | ||
"cell_type": "code", | ||
"execution_count": 1, | ||
"metadata": { | ||
"collapsed": false | ||
}, | ||
"outputs": [ | ||
{ | ||
"data": { | ||
"text/plain": [ | ||
"'1.11.2'" | ||
] | ||
}, | ||
"execution_count": 1, | ||
"metadata": {}, | ||
"output_type": "execute_result" | ||
} | ||
], | ||
"source": [ | ||
"import numpy as np\n", | ||
"np.__version__" | ||
] | ||
}, | ||
{ | ||
"cell_type": "markdown", | ||
"metadata": {}, | ||
"source": [ | ||
"#### Append Data\n", | ||
"\n", | ||
"Very similar in application to the core Python list method `.append()`, the `np.append()` function takes an `array` and some `values` in the form of an array and extends the length of the given array and adds the given item at the end." | ||
] | ||
}, | ||
{ | ||
"cell_type": "code", | ||
"execution_count": 2, | ||
"metadata": { | ||
"collapsed": false | ||
}, | ||
"outputs": [ | ||
{ | ||
"data": { | ||
"text/html": [ | ||
"<iframe id=\"igraph\" scrolling=\"no\" style=\"border:none;\" seamless=\"seamless\" src=\"https://plot.ly/~AdamKulidjian/1688.embed\" height=\"525px\" width=\"100%\"></iframe>" | ||
], | ||
"text/plain": [ | ||
"<plotly.tools.PlotlyDisplay object>" | ||
] | ||
}, | ||
"execution_count": 2, | ||
"metadata": {}, | ||
"output_type": "execute_result" | ||
} | ||
], | ||
"source": [ | ||
"import plotly.plotly as py\n", | ||
"import plotly.graph_objs as go\n", | ||
"from plotly import tools\n", | ||
"from plotly.tools import FigureFactory as FF\n", | ||
"\n", | ||
"array = np.array([1, 2, 3, 4, 5])\n", | ||
"longer_array = np.append(array, [6, 7, 8])\n", | ||
"\n", | ||
"trace1 = go.Scatter(\n", | ||
" x=array,\n", | ||
" y=[1 for i in array],\n", | ||
" mode='markers',\n", | ||
" marker=dict(\n", | ||
" size=[5 + 3*j for j in array]\n", | ||
" ),\n", | ||
" name='array'\n", | ||
")\n", | ||
"trace2 = go.Scatter(\n", | ||
" x=longer_array,\n", | ||
" y=[2 for j in longer_array],\n", | ||
" mode='markers',\n", | ||
" marker=dict(\n", | ||
" size=[5 + 3*j for j in longer_array]\n", | ||
" ),\n", | ||
" name='longer_array'\n", | ||
")\n", | ||
"\n", | ||
"py.iplot([trace1, trace2], filename='numpy-array')" | ||
] | ||
}, | ||
{ | ||
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"metadata": { | ||
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], | ||
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"<IPython.core.display.HTML object>" | ||
] | ||
}, | ||
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}, | ||
{ | ||
"data": { | ||
"text/html": [ | ||
"<link rel=\"stylesheet\" type=\"text/css\" href=\"http://help.plot.ly/documentation/all_static/css/ipython-notebook-custom.css\">" | ||
], | ||
"text/plain": [ | ||
"<IPython.core.display.HTML object>" | ||
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{ | ||
"name": "stdout", | ||
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"text": [ | ||
"Collecting git+https://github.com/plotly/publisher.git\n", | ||
" Cloning https://github.com/plotly/publisher.git to /var/folders/tc/bs9g6vrd36q74m5t8h9cgphh0000gn/T/pip-uPqS8w-build\n", | ||
"Installing collected packages: publisher\n", | ||
" Found existing installation: publisher 0.10\n", | ||
" Uninstalling publisher-0.10:\n", | ||
" Successfully uninstalled publisher-0.10\n", | ||
" Running setup.py install for publisher ... \u001b[?25l-\b \b\\\b \bdone\n", | ||
"\u001b[?25hSuccessfully installed publisher-0.10\n", | ||
"\u001b[33mYou are using pip version 8.1.2, however version 9.0.1 is available.\n", | ||
"You should consider upgrading via the 'pip install --upgrade pip' command.\u001b[0m\n" | ||
] | ||
}, | ||
{ | ||
"name": "stderr", | ||
"output_type": "stream", | ||
"text": [ | ||
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/IPython/nbconvert.py:13: ShimWarning:\n", | ||
"\n", | ||
"The `IPython.nbconvert` package has been deprecated. You should import from nbconvert instead.\n", | ||
"\n", | ||
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/publisher/publisher.py:53: UserWarning:\n", | ||
"\n", | ||
"Did you \"Save\" this notebook before running this command? Remember to save, always save.\n", | ||
"\n" | ||
] | ||
} | ||
], | ||
"source": [ | ||
"from IPython.display import display, HTML\n", | ||
"\n", | ||
"display(HTML('<link href=\"//fonts.googleapis.com/css?family=Open+Sans:600,400,300,200|Inconsolata|Ubuntu+Mono:400,700\" rel=\"stylesheet\" type=\"text/css\" />'))\n", | ||
"display(HTML('<link rel=\"stylesheet\" type=\"text/css\" href=\"http://help.plot.ly/documentation/all_static/css/ipython-notebook-custom.css\">'))\n", | ||
"\n", | ||
"! pip install git+https://github.com/plotly/publisher.git --upgrade\n", | ||
"import publisher\n", | ||
"publisher.publish(\n", | ||
" 'Append.ipynb', 'numpy/append/', 'Append | plotly',\n", | ||
" 'How to append values to a NumPy array.',\n", | ||
" title = 'Append | plotly',\n", | ||
" name = 'Append',\n", | ||
" has_thumbnail='true', thumbnail='thumbnail/numpy_array.jpg', \n", | ||
" language='numpy', page_type='example_index',\n", | ||
" display_as='modify-the-array', order=1)" | ||
] | ||
}, | ||
{ | ||
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"execution_count": null, | ||
"metadata": { | ||
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"outputs": [], | ||
"source": [] | ||
} | ||
], | ||
"metadata": { | ||
"kernelspec": { | ||
"display_name": "Python 2", | ||
"language": "python", | ||
"name": "python2" | ||
}, | ||
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"name": "ipython", | ||
"version": 2 | ||
}, | ||
"file_extension": ".py", | ||
"mimetype": "text/x-python", | ||
"name": "python", | ||
"nbconvert_exporter": "python", | ||
"pygments_lexer": "ipython2", | ||
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