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Matplotlib: Difference between revisions
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<b>Read these short documents</b>:
* Pyplot tutorial (just this one section; stop before the next section "Controlling line properties"): http://matplotlib.sourceforge.net/users/pyplot_tutorial.html#pyplot-tutorial
* List of line options, including line style
<b>Check your understanding</b>:
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Run <code>python world_population.py</code>. This will pop up a window with a dot plot of the world population over the last 10,000 years.
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Open <code>world_population.py</code>. Read through the code in this file.
In this example, we read our data from a file. Open the data file <code>world_population.txt</code> and examine the format of the file.
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Find the documentation on http://matplotlib.sourceforge.net/api/pyplot_api.html#matplotlib.pyplot.plot for customizing the linewidth of plots. Then change the world population plot to use a magenta, down-triangle marker and a linewidth of 2.
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<b>Check your understanding</b>:▼
▲<b>Step 2 resources</b>:
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File input and output: http://docs.python.org/tutorial/inputoutput.html#reading-and-writing-files.
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Splitting sprints into parts based on a delimiter: http://www.hacksparrow.com/python-split-string-method-and-examples.html
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▲<b>Check your understanding</b>:
* In <code>world_population.py</code>, what does <code>file("world_population.txt", "r").readlines()</code> return?
* In <code>world_population.py</code>, what does <code>point.split()</code> return?
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