new XML load weather data from Yahoo example

java/examples/Topics/File IO/XMLYahooWeather/XMLYahooWeather.pde

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+/**
+ * Loading XML Data
+ * by Daniel Shiffman.  
+ * 
+ * This example demonstrates how to use loadXML()
+ * to retrieve data from an XML document via a URL
+ */
+
+// We're going to store the temperature
+int temperature = 0;
+// We're going to store text about the weather
+String weather = "";
+
+// The zip code we'll check for
+String zip = "10003";
+
+void setup() {
+  size(200, 200);
+
+  // The URL for the XML document
+  String url = "http://xml.weather.yahoo.com/forecastrss?p=" + zip;
+  
+  // Load the XML document
+  XML xml = loadXML(url);
+
+  // Grab the element we want
+  XML forecast = xml.getChild("channel").getChild("item").getChild("yweather:forecast");
+  
+  // Get the attributes we want
+  temperature = forecast.getInt("high");
+  weather = forecast.getString("text");
+}
+
+void draw() {
+  background(255);
+  fill(0);
+
+  // Display all the stuff we want to display
+  text("Zip code: " + zip, 10, 160);
+  text("Today's high: " + temperature, 10, 40);
+  text("Forecast: " + weather, 10, 90);
+
+  // Draw a little thermometer based on the temperature
+  stroke(0);
+  fill(175);
+  rect(10, 50, temperature*2, 20);
+}