Research and Implementation of Rapid Displaying ECDIS Based on Large Scale S-57 Data

In the process of researching and implementing electronic chart display and information system, discovered the problem of displaying efficiency based on large scale electronic chart data. As the electronic chart data and its objects have scale range, suggested dividing electronic chart data into several grades and controlling displaying by scale. When displaying electronic chart data, the data within current scale range can only be used. The experimental results demonstrate that the algorithm is efficient in displaying the huge electronic chart data.