How to embed matplotlib graph in Django webpage?

Question

So, bear with me as I\'m VERY new to Django, Python, and web-development in general. What I want to do is display a graph that I\'ve made using matplotlib. I had it working to w

Answer 1

I think you should uncoment this line:

#canvas.print_png(response)

You can easily return plot using django HttpResponse instead using some extra libs. In the matplotlib there is a FigureCanvasAgg which gives you access to canvas where plot is rendered. Finaly you can simple return it as HttpResonse. Here you have very basic example.

import matplotlib.pyplot as plt
import numpy as np
from matplotlib.backends.backend_agg import FigureCanvasAgg
from django.http import HttpResponse

def plot(request):
    # Data for plotting
    t = np.arange(0.0, 2.0, 0.01)
    s = 1 + np.sin(2 * np.pi * t)

    fig, ax = plt.subplots()
    ax.plot(t, s)

    ax.set(xlabel='time (s)', ylabel='voltage (mV)',
           title='About as simple as it gets, folks')
    ax.grid()

    response = HttpResponse(content_type = 'image/png')
    canvas = FigureCanvasAgg(fig)
    canvas.print_png(response)
    return response