Python to generate nice looking SVG graph http://pygal.org/
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# -*- coding: utf-8 -*-
# This file is part of pygal
#
# A python svg graph plotting library
# Copyright © 2012-2014 Kozea
#
# This library is free software: you can redistribute it and/or modify it under
# the terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option) any
# later version.
#
# This library is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with pygal. If not, see <http://www.gnu.org/licenses/>.
from flask import Flask, render_template, request, jsonify
from pygal import CHARTS_BY_NAME
from pygal.graph import CHARTS_NAMES
from pygal.config import CONFIG_ITEMS
from pygal.interpolate import INTERPOLATIONS
from pygal.style import styles
from json import loads
from time import time
def create_app():
"""Creates the pygal test web app"""
app = Flask(__name__)
@app.route("/")
def index():
return render_template(
'index.jinja2', charts_names=CHARTS_NAMES, configs=CONFIG_ITEMS,
interpolations=INTERPOLATIONS, styles_names=styles.keys())
@app.route("/svg", methods=('POST',))
def svg():
values = request.values
config = loads(values['opts'])
config['disable_xml_declaration'] = True
config['style'] = styles[values['style']]
config['js'] = []
for item in CONFIG_ITEMS:
value = config.get(item.name, None)
if value:
config[item.name] = item.coerce(value)
chart = CHARTS_BY_NAME[values['type']](**config)
for serie in loads(values['vals'])['vals']:
chart.add(serie[0], serie[1])
t = time()
svg = chart.render()
tt = int((time() - t) * 1000)
return jsonify(svg=svg, time=tt)
return app