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TrafficCamNZ – Usage tip #5 5 January 2011

Posted by David Wilson in iPhone.


The Map tab allows you to view the traffic cameras, where GPS coordinates are known/loaded, against the geographic background of Earth (I don’t think it would work on the Moon!). The further zoomed out the coverage area is, the less pins are shown on the map. As you zoom in, more pins (cameras) for that location are revealed). You can move the coverage slider to zoom in or out, or you can double tap to zoom in and normal pinch actions to zoom in/out.

The screen below shows a close up of Las Vegas. Each pin is a camera.

Taping on a pin will bring up the name of the camera and it’s URL along with a thumbnail of the current camera image (this may take some seconds to retrieve depending on your network connection and server response). Clicking on the triangle to the right will bring up a new screen showing the camera image full screen and trigger a new image to be retrieved.

Full screen camera image. If you want to refresh the image, click on the refresh icon button in the top right hand corner of the screen. To return to the map screen, tap the button in the top left of the screen.

The Map screen also provides a way to add new cameras by clicking on the + button in the top right hand corner of the screen. This brings up the camera editing screen. Complete your entry, tap the save button and you are returned to the Map screen.

Help – I cannot scroll off the end of the Earth!
Yes this is an issue. the Map has a hard wall on or about the international date line – you cannot scroll over this. To get closer to your specific destination you need to scroll left/right and zoom in on your target.

Shifting pins!
You can tap and hold a pin (it will turn red and appear to be “picked up”). Now that you have it in the air, you can move your finger and pin to another location and let go. This will be the new location for that camera, the GPS coordinates are updated accordingly. On the other hand if you know the specific GPS coordinates for a particular camera, you can edit the camera details via the Library screen and save the updated camera.

– David



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