Improve the performance of large data processing

examples/selection/index.html

@@ -67,12 +67,14 @@
 			var zoom = $("#zoom").attr("checked");
 
 			if (zoom) {
-				plot = $.plot(placeholder, data, $.extend(true, {}, options, {
-					xaxis: {
-						min: ranges.xaxis.from,
-						max: ranges.xaxis.to
-					}
-				}));
+				$.each(plot.getXAxes(), function(_, axis) {
+	                var opts = axis.options;
+	                opts.min = ranges.xaxis.from;
+	                opts.max = ranges.xaxis.to;
+	            });
+	            plot.setupGrid();
+	            plot.draw();
+	            plot.clearSelection();
 			}
 		});
 

examples/visitors/index.html

@@ -93,12 +93,14 @@
 
 			// do the zooming
 
-			plot = $.plot("#placeholder", [d], $.extend(true, {}, options, {
-				xaxis: {
-					min: ranges.xaxis.from,
-					max: ranges.xaxis.to
-				}
-			}));
+			$.each(plot.getXAxes(), function(_, axis) {
+		        var opts = axis.options;
+		        opts.min = ranges.xaxis.from;
+		        opts.max = ranges.xaxis.to;
+		    });
+			plot.setupGrid();
+			plot.draw();
+			plot.clearSelection();
 
 			// don't fire event on the overview to prevent eternal loop