intial example

data-service.py

+from flask import Flask, request
+from flask_cors import CORS
+from json_tricks import dumps
+from numpy import arange, reshape, sin
+app = Flask(__name__)
+
+# CORS is required to query this service from other webservers than this local python server
+CORS(app)
+
+# simple plot of a line
+@app.route("/plot/test1", methods = ['POST'])
+def plotdata():
+    # create a data structe of the form { x: [ ], y: [] } and send it back 
+    data = {'x': arange(0, 10, 1, dtype=int), 'y': arange(2, 12, dtype=int)}
+    return dumps(data, primitives=True) 
+
+# plot of f(x;k) = sin(k*x) with paramter k being specified by the client
+@app.route("/plot/test2", methods = ['POST'])
+def plotdata2():
+    # parse the value of the parameter k from the request
+    options = request.get_json()
+    k = options['k']
+    # create a data structe of the form { x: [ x_i ], y: [sin(k*x_i)] } and send it back 
+    data = {'x': arange(0, 6.2, 0.1, dtype=float), 'y': sin(k*arange(0, 6.2, 0.1, dtype=float))}
+    return dumps(data, primitives=True) 
+
+if __name__ == "__main__":
+    app.run()
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