I am submitting a snippet of code along with.
Please help me.

drawImage.frame = [tileContainerView frame];
drawImage.tag = 555;
UIGraphicsBeginImageContext(tileContainerView.frame.size);
CGContextSetLineCap(UIGraphicsGetCurrentContext(), kCGLineCapRound);
//CGContextSetLineWidth(UIGraphicsGetCurrentContext(), 3.0);
//CGContextSetRGBStrokeColor(UIGraphicsGetCurrentContext(), 1.0, 0.0, 0.0, 1.0);
CGContextBeginPath(UIGraphicsGetCurrentContext());
CGContextMoveToPoint(UIGraphicsGetCurrentContext(), mapXFrom,mapYFrom+22);
CGContextAddLineToPoint(UIGraphicsGetCurrentContext(),(mapXFrom +mapXTo)/2,(mapYFrom+ mapYTo+22)/2);
CGContextStrokePath(UIGraphicsGetCurrentContext());
CGContextFlush(UIGraphicsGetCurrentContext());

drawImage.image = UIGraphicsGetImageFromCurrentImageContext();
[self addSubview:drawImage];
[self setUserInteractionEnabled:TRUE];
UIGraphicsEndImageContext();

Although it can also be used in v.4.0
Hope this helps.

One thing though – for nudging to work it should move latitude not by 0.00017 (which is fine only at the map scale in this example), but by 1% of the span:

newCenter.latitude = mapper.region.center.latitude – mapper.region.span.latitudeDelta/100;

If you move by 0.00017 then in some zoom levels that might be quite visible, and in some zoom levels it might not move at all and not protect the clipping.

Is there anybody out there who managed displaying routes with allot of single points?
This will be extremely slow – and blocks the mainthread, too.

Any Ideas?

The problem I’m having is as Charlie said that “The RouteView is initializing with a non-origin frame” which is causing the extrapolated route to get cropped in certain situations. And because I keep redrawing/extrapolating this every second, it gets re-cropped every second.

Does anyone have an idea on how to get the RouteView to initialize correctly, i.e. aligned with the frame of the mapview?

Thanks for creating such a nice application.
I have used your code for my application and facing a problem i.e. when I plot the route from “San Jose” to “New York”, it works fine but when I try to zoom in or zoom out, then close the application without waiting for the zoom effect. After that I re-launch the application immediately my application crashes!!! (

What I figured out is that when I zoom-in or zoom-out multiple drawRect events are pushed for CSRouteView from setCenter method which are still pending for the execution, when i close the application and relaunch it I somehow gets the same process back again and my application try to handle the remaining events then shuts down.

Please help me to resolve this issue.