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Using flask to deliver plt
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| from io import BytesIO | |
| from flask import Flask, make_response, render_template | |
| from matplotlib.backends.backend_agg import FigureCanvasAgg as FigureCanvas | |
| from BA_argo_playground.plot_image import create_plot | |
| app = Flask(__name__, template_folder="/home/sebsch/Dokumente/Uni-Workdir/Bachelorarbeit/BA_argo_playground/templates") | |
| @app.route("/simple.png") | |
| def simple(): | |
| fig = create_plot() | |
| canvas=FigureCanvas(fig) | |
| png_output = BytesIO() | |
| canvas.print_png(png_output) | |
| response=make_response(png_output.getvalue()) | |
| response.headers['Content-Type'] = 'image/png' | |
| return response | |
| @app.route('/') | |
| def images(): | |
| return render_template("images.html", title="Test") | |
| if __name__ == "__main__": | |
| app.run() |
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| <html> | |
| <head> | |
| <title>{{ title }} - image</title> | |
| </head> | |
| <body> | |
| <img src="{{ url_for('simple') }}" alt="Image Placeholder" width="100%"> | |
| </body> | |
| </html> |
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| from matplotlib.figure import Figure | |
| from matplotlib.dates import DateFormatter | |
| import datetime | |
| import random | |
| def create_plot(): | |
| fig = Figure() | |
| ax = fig.add_subplot(111) | |
| x = [] | |
| y = [] | |
| now = datetime.datetime.now() | |
| delta = datetime.timedelta(days=1) | |
| for i in range(10): | |
| x.append(now) | |
| now += delta | |
| y.append(random.randint(0, 1000)) | |
| ax.plot_date(x, y, '-') | |
| ax.xaxis.set_major_formatter(DateFormatter('%Y-%m-%d')) | |
| fig.autofmt_xdate() |
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