使用VB.NET绘制大气污染物浓度分布等值曲线  

Drawing the Concentration Distribution Isogram for the Atmosphere Pollutants with VB.NET

作　　者：隋祥[1] 王英伟[1] 

机构地区：[1]东北林业大学,黑龙江哈尔滨150040

出　　处：《环境科学与管理》2006年第2期136-140,共5页Environmental Science and Management

摘　　要：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。Drawing isogram for the atmosphere pollutants is a important task in the atmosphere environment influence estimating. Employing optimizing black area and white area combine the vectogram drawing technology which is supplied by Metafile under the environment of VB.NET, it can accomplish the division between black area and white area, the drawing of the black area, the fitting calculate and the ordering of the same time. And it has the advantages like small calculation amount, efficiency, small code amount and drawing arbitrary concentration isoline.

关 键 词：大气污染物 等浓度曲线 环境影响评价 VB.NET 

分 类 号：X820.1[环境科学与工程—环境工程]