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    <p>Just think about what you're doing.</p> <ul> <li>GPS data (from each player) is received as a sequence of points (Latitude/Longitude?).</li> <li>Convert those points to X/Y coordinates for your football field image</li> <li>Use a graphics API (such as GDI / System.Drawing ) to draw lines between subsequent points</li> </ul> <p>If you're using C# you might save time and trouble by using WinForms and subclassing <code>Control</code> and painting directly to the control's surface. You'll need to store a list of all the recent points for each player (because you'll need to constantly repaint the control).</p> <p>Note that the geolocation features in .NET won't help you here unless all of your football players are going to be carrying laptops strapped to their backs. You'd want small GPS trackers attached to each player along with a small radiotransmitter that sends the data. An easy way to do this is with a commodity Bluetooth GPS unit, but I don't know if Bluetooth can support that many transceivers in such a small space, or even if the signal will reach from one end of the field to another. The most expensive way is to write a phone app and have each player carry a smartphone that sends geolocation data via a 3G or Wifi connection.</p> <p>Note that GPS units tend to have a usable accuracy of about 5m (maybe 2.5m on a good day), and are useless indoors. Then consider the 5 minutes it takes for them to secure a good lock in the first place (mobile phones have quick geolocation because they use assistance from mobile phone masts). Football fields aren't very big, and even with 2.5m accuracy the data isn't going to be very useful.</p> <p>In real sports they don't use GPS for this reason. Instead they use higher-precision radio units and specialist transmitter/receiver units placed around the pitch. An alternative is visual tracking, but that's an immature science (Turing help you if two players or more wearing the same team colour collapse into each other).</p>
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    1. POI want help and idea about how to draw The path of GPS in C#
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    1. COthank you very much with your idea. yes i want to do it with radio Frequency but my professor just want to do it this way .... -- -- too bad
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