Generate a HTML image that is centred using mpld3

I've been experimenting with the mpld3 Python library to convert static matplotlib figures into interactive images in HTML format. Here's a simple example:

# create a static matplotlib figure
import matplotlib.pyplot as plt
import numpy as np

fig = plt.figure()
ax = plt.axes()
x = np.linspace(0, 10, 1000)
ax.plot(x, np.sin(x))

# save it as an interactive html file
import mpld3

html_str = mpld3.fig_to_html(fig)
Html_file= open("sample.html","&w")
Html_file.write(html_str)
Html_file.close()

However, I'm facing an issue where the html image always appears on the top-left corner when opened in a browser. Is there any way to center it or have more control over its output style?

https://i.sstatic.net/0UG8a.png

Answer №1

mpld3.fig_to_html() generates a snippet of html code that is meant to be embedded within a complete html document, even though it can function as a standalone html document.

Here's an illustration of how to assign the id fig1 to the created snippet using the figid option. The process involves creating an html document with CSS style instructions for the <div> element with the id fig1, followed by inserting the snippet into the document.

html_fragment = mpld3.fig_to_html(fig, figid = 'fig1')

html_doc = f'''
<style type="text/css">
div#fig1 {{ text-align: center }}
</style>

{html_fragment}
'''

Html_file= open("sample.html","w")
Html_file.write(html_doc)
Html_file.close()

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