ipython notebook arrange plots horizontally

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谎友^
谎友^ 2021-02-02 13:11

Currently, when creating two consecutive plots in an ipython notebook, they are displayed one below the other:

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  • 2021-02-02 13:46

    Pretty sure there isn't away to do so without the subplot or grid plot methods. As for the plot size, you can specify their sizes with something like ax[0].axes([.65, .6, .2, .2]) or plt.subplots(1, 2, figuresize=(12,4)). Unfortunately, this is how matplotlib is setup. If you use the interpreter, you can resize the GUI.

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  • 2021-02-02 13:47

    Because the question was posed quite some time ago, I will propose an updated solution for those finding this question via search engines.

    Since Jupyter has largely replaced the IPython notebook and Jupyter Lab is planned to replace Jupyter, my solution is implemented in Jupyter Lab 0.35.4.

    In this environment, I find it extremely useful to evaluate a cell that reads:

    %%html
    
    <style>
        .jp-OutputArea-child {
            display: inline-block;
        }
    </style>
    

    This allows for better utilization of vertical space by allowing outputs areas, especially plots, to float side by side. I wish a more refined variant of this were the default behavior.

    Browsers are not currently supporting CSS parent selectors, but according to the selectors level 4 working draft, it would be better to use something like the following if browsers start supporting it:

    %%html
    
    <style>
        .jp-OutputArea-child:has(> .jp-RenderedImage) {
            display: inline-block;
        }
    </style>
    
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  • 2021-02-02 13:59

    This works for me in Python 3.5, Jupyter 4.4.0.

    The plots "flow around" when you resize the browser window, to fill the horizontal space.

    The plots can also be different sizes (try substituting figsize=(3+i/3,2+i/4) - see the second image below)

    (Just realised how old this question is; I look periodically for the same thing. I confess the code is cobbled together from other web examples, but I've lost the references now)

    import matplotlib.pyplot as plt
    import numpy as np
    from IPython.display import HTML
    import io
    import base64
    
    
    class FlowLayout(object):
        ''' A class / object to display plots in a horizontal / flow layout below a cell '''
        def __init__(self):
            # string buffer for the HTML: initially some CSS; images to be appended
            self.sHtml =  """
            <style>
            .floating-box {
            display: inline-block;
            margin: 10px;
            border: 3px solid #888888;  
            }
            </style>
            """
    
        def add_plot(self, oAxes):
            ''' Saves a PNG representation of a Matplotlib Axes object '''
            Bio=io.BytesIO() # bytes buffer for the plot
            fig = oAxes.get_figure()
            fig.canvas.print_png(Bio) # make a png of the plot in the buffer
    
            # encode the bytes as string using base 64 
            sB64Img = base64.b64encode(Bio.getvalue()).decode()
            self.sHtml+= (
                '<div class="floating-box">'+ 
                '<img src="data:image/png;base64,{}\n">'.format(sB64Img)+
                '</div>')
    
        def PassHtmlToCell(self):
            ''' Final step - display the accumulated HTML '''
            display(HTML(self.sHtml))
    
    
    
    
    oPlot = FlowLayout() # create an empty FlowLayout
    
    # Some fairly regular plotting from Matplotlib
    gX = np.linspace(-5,5,100) # just used in the plot example
    for i in range(10): # plot 10 charts
        fig, ax = plt.subplots(1, 1, figsize=(3,2)) # same size plots
                               # figsize=(3+i/3,2+i/4)) # different size plots
        ax.plot(gX, np.sin(gX*i)) # make your plot here
        oPlot.add_plot(ax) # pass it to the FlowLayout to save as an image
        plt.close() # this gets rid of the plot so it doesn't appear in the cell
    
    
    oPlot.PassHtmlToCell()
    

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  • 2021-02-02 14:01

    Yes, you can do this:

    In [3]: import numpy as np
       ...: xs = np.linspace(0,100,100)
       ...: fig, axs = plt.subplots(nrows=1, ncols=2)
       ...: axs[0].plot(xs, xs * xs)
       ...: axs[1].plot(xs, np.sqrt(xs))
       ...: 
    

    Output:

    enter image description here

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