基于IDL对象图形法的二维海洋数据可视化程序设计

Visualization programming of mapping a 2D ocean data Using IDL Object Graphics

二维海洋信息对应着物理要素的地理空间分布,此类信息的可视化既要考虑绘图区域的尺寸大小,又要考虑数据本身的空间范围所隐含的关联约束。基于IDL对象图形系统可视化特点,在分析二维海洋信息表达需求基础上,指出该类数据可视化的关键在于寻找物理量空间范围、显示区域设备长度和视体属性相互约束下的最优输出,并提出了二维海洋数据可视化的实现流程。应用事例说明,该方法在二维海洋信息可视化实现中具有较高的实用价值。

2D oean information is a distribution of physical data. The visualization result of such data nut only restrict with destination objject size, but all its map attribute. Making use of IDI. object graphics visualization technidque, on the basis of requirement of 2D geometry information presentation, We find out that the key to such irffonnation visualization is the optimize output of physical data＇ s area, destination object＇ size andd view volume＇ s property. This paper prents a method of using IDL object graphics for 2 - D geographic information visualization development. An application for example was given to show, the practice indicates that in visualization application domain it has high usability.