new Table example

java/examples/Topics/Advanced Data/LoadSaveTable/Bubble.pde

@@ -0,0 +1,40 @@
+// A Bubble class
+
+class Bubble {
+  float x,y;
+  float diameter;
+  String name;
+  
+  boolean over = false;
+  
+  // Create  the Bubble
+  Bubble(float x_, float y_, float diameter_, String s) {
+    x = x_;
+    y = y_;
+    diameter = diameter_;
+    name = s;
+  }
+  
+  // CHecking if mouse is over the Bubble
+  void rollover(float px, float py) {
+    float d = dist(px,py,x,y);
+    if (d < diameter/2) {
+      over = true; 
+    } else {
+      over = false;
+    }
+  }
+  
+  // Display the Bubble
+  void display() {
+    stroke(0);
+    strokeWeight(2);
+    noFill();
+    ellipse(x,y,diameter,diameter);
+    if (over) {
+      fill(0);
+      textAlign(CENTER);
+      text(name,x,y+diameter/2+20);
+    }
+  }
+}

java/examples/Topics/Advanced Data/LoadSaveTable/LoadSaveTable.pde

@@ -0,0 +1,78 @@
+/**
+ * Loading Tabular Data
+ * by Daniel Shiffman.  
+ * 
+ * This example demonstrates how to use loadTable()
+ * to retrieve data from a CSV file and make objects 
+ * from that data.
+ *
+ * Here is what the CSV looks like:
+ *
+   x,y,diameter,name
+   160,103,43.19838,Happy
+   372,137,52.42526,Sad
+   273,235,61.14072,Joyous
+   121,179,44.758068,Melancholy
+ */
+ 
+// An Array of Bubble objects
+Bubble[] bubbles;
+// A Table object
+Table table;
+
+void setup() {
+  size(640, 360);
+  loadData();
+}
+
+void draw() {
+  background(255);
+  // Display all bubbles
+  for (Bubble b : bubbles) {
+    b.display();
+    b.rollover(mouseX, mouseY);
+  }
+
+  textAlign(LEFT);
+  fill(0);
+  text("Click to add bubbles.", 10, height-10);
+}
+
+void loadData() {
+  // Load CSV file into a Table object
+  // "header" option indicates the file has a header row
+  table = loadTable("data.csv","header");
+
+  // The size of the array of Bubble objects is determined by the total number of rows in the CSV
+  bubbles = new Bubble[table.getRowCount()]; 
+
+  // You can access iterate over all the rows in a table
+  int rowCount = 0;
+  for (TableRow row : table.rows()) {
+    // You can access the fields via their column name (or index)
+    float x = row.getFloat("x");
+    float y = row.getFloat("y");
+    float d = row.getFloat("diameter");
+    String n = row.getString("name");
+    // Make a Bubble object out of the data read
+    bubbles[rowCount] = new Bubble(x, y, d, n);
+    rowCount++;
+  }  
+
+}
+
+void mousePressed() {
+  // Create a new row
+  TableRow row = table.addRow();
+  // Set the values of that row
+  row.setFloat("x", mouseX);
+  row.setFloat("y", mouseY);
+  row.setFloat("diameter", random(40, 80));
+  row.setString("name", "Blah");
+
+  // Writing the CSV back to the same file
+  saveTable(table,"data/data.csv");
+  // And reloading it
+  loadData();
+}
+

java/examples/Topics/Advanced Data/LoadSaveTable/data/data.csv

@@ -0,0 +1,5 @@
+x,y,diameter,name
+160,103,43.19838,Happy
+372,137,52.42526,Sad
+273,235,61.14072,Joyous
+121,179,44.758068,Melancholy

java/examples/Topics/Advanced Data/LoadingXMLObjects/Bubble.pde

@@ -1,9 +1,3 @@
-// Learning Processing
-// Daniel Shiffman
-// http://www.learningprocessing.com
-
-// Example 18-9: Using Processing's XML library
-
 // A Bubble class
 class Bubble {