摘要： 在基于Flex的网络地理信息系统中，注记绘制操作会严重影响地图的绘制速度。针对该问题，通过分析比较Flex中6种可以显示注记的控件，得出TextField控件的效率最高，但绘制大量文字时效果不理想，据此对TextField的标准绘制用法进行改进。实际应用结果表明，改进方法的重绘效率提高了12倍~18倍。
关键词:
Flex技术,
网络地理信息系统,
重绘,
TextField控件,
注记
Abstract: In WebGIS based on Flex, drawing labels seriously affects the efficiency of drawing the whole map. According to the problem, by comparing six label controls in Flex, it concludes that TextField control has the highest efficiency, but it is poor in drawing lots of words. So it improves the standard drawing method TextField. Application results proves that redrawing efficiency of the improved method is increased by 12 to 18 times.
Key words:
Flex technology,
WebGIS,
redrawing,
TextField control,
label
中图分类号:
胡斌峰, 孙伟德, 陈奇. 基于Flex的WebGIS注记控件研究[J]. 计算机工程, 2011, 37(21): 32-34,37.
HU Bin-Feng, SUN Wei-De, CHEN Ai. Research of WebGIS Label Control Based on Flex[J]. Computer Engineering, 2011, 37(21): 32-34,37.