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Drawing the Concentration Distribution Isogram for the Atmosphere Pollutants with VB.NET
Author(s): 
Pages: 136-140
Year: Issue:  2
Journal: ENVIRONMENTAL SCIENCE AND MANAGEMENT

Keyword:  大气污染物等浓度曲线环境影响评价VB.NET;
Abstract: 大气污染物浓度分布等值曲线的绘制是大气环境影响预测的一项重要工作.采用优化的黑白域矩形网格序列法,结合VB.NET环境下Metafile对象提供的矢量图形绘制新技术,可在一次数据扫描过程中同时实现黑白域划分、黑域边界提取、等值点拟合计算及序列化、等值线绘制等操作,计算量小、效率高、代码量少,可绘制任意浓度等值线,且等值线不相切.
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