Passing a matplotlib figure to HTML (flask)

Question

I am using matplotlib to render some figure in a web app. I\'ve used fig.savefig() before when I\'m just running scripts. However, I need a function to return a

Answer 1

I am working with Python 3.x, I have changed some lines of the code and it worked for me. I had the following error message: ".....object has no attribute 'savefig'"

@app.route('/fig/')

def fig(cropzonekey):
    #fig = draw_polygons(cropzonekey)
    fig = plt.plot([1,2,3,4], [1,2,3,4])
    #img = StringIO()
    img = BytesIO()
    #fig.savefig(img)
    plt.savefig(img)
    img.seek(0)
    return send_file(img, mimetype='image/png')