Added JPGraph v3.5.0b1

includes/jpgraph/src/Examples/barformatcallbackex1.php

@@ -0,0 +1,30 @@
+<?php // content="text/plain; charset=utf-8"
+require_once ('jpgraph/jpgraph.php');
+require_once ('jpgraph/jpgraph_bar.php');
+
+$data = array(0.1235,0.4567,0.67,0.45,0.832);
+
+// Callback function
+// Get called with the actual value and should return the
+// value to be displayed as a string
+function cbFmtPercentage($aVal) {
+    return sprintf("%.1f%%",100*$aVal); // Convert to string
+}
+
+// Create the graph. 
+$graph = new Graph(400,300);	
+$graph->SetScale("textlin");
+
+// Create a bar plots
+$bar1 = new BarPlot($data);
+
+// Setup the callback function
+$bar1->value->SetFormatCallback("cbFmtPercentage");
+$bar1->value->Show();
+
+// Add the plot to the graph
+$graph->Add($bar1);
+
+// .. and send the graph back to the browser
+$graph->Stroke();
+?>