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Misc/read-rgb-as-csv-file-and-display.pde

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+
+// read a csv file containing RGB data and display the image
+
+// CSV file contains one line for pixel in the format "rrr,ggg,bbb"    
+// e.g.     12,34,56
+//          34,128,13
+//          67,77,89
+
+// -------------------------------------------------------
+
+// image file name (csv)
+  String fileName = "/home/alan/temp/q.csv";
+
+// Image resolution
+  int resX = 320;
+  int resY = 240;
+
+
+String[] lines; 
+int xPos = 0;
+int yPos = 0;
+
+
+void setup() {
+  // open csv file
+    lines = loadStrings(fileName);
+    print(lines.length);
+    println(" Lines in file");
+  
+  size(640,480);
+  background(0);   
+  noLoop();
+  stroke(255);
+}  // setup
+
+
+void draw() {
+  for(int i = 0; i < lines.length; i++) {
+        String[] a = split(lines[i], ',');  
+        if (a.length == 3) {                         // if expected number of variables received
+          // increment image position
+            xPos = xPos + 1;
+            if (xPos == resX) {
+               xPos = 0;
+               yPos = yPos  + 1;
+            }
+            stroke(float(a[0]),float(a[1]),float(a[2]));
+            point(resX-xPos,resY-yPos);
+        }       
+  }
+  
+  println("Finished");
+
+}   // draw
+