Line charts

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Line chart
You can use Matplotlib to create a line chart with Python. Matplotlib is a plotting library for the Python programming language and its numerical mathematics extension numpy.  This takes only a few lines:

In the first two lines we include the numpy and matplotlib library. This contains logical functions to create line charts amongst others. We define a list named x with a few random numbers and we set the x and y label. Finally we call the function show() which will display the line chart. If you do not call the show() function, nothing will be shown on the screen.

matplotlib-plot

by changing the plot function call to:

we create a red graph with dots, where the r in ‘ro-‘ indicates red. Changing this to ‘bo-‘ would create a blue dotted line. If you only want to display the dots, use ‘ro’ or ‘bo’ instead.

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9 Comments

  • Lena Khanpour says:

    how can I install matplotlib? I have the same problem as Ayush!

  • Ayush khanduri says:

    it gives me an error
    import matplotlib.pyplot as plt
    ImportError: No module named matplotlib.pyplot

    would it be because i have multiple versions of python installed in my linux.?

    • CodeNinja says:

      Multiple python versions is not a problem, install matplotlib: pip install matplotlib

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