画等值线程序源代码，用矩形网格法。用于地质、水文、石油、气象等方面，绘制等高线、等值线。-painting isogram source code, using rectangular grid. For geology, hydrology, petroleum, meteorological, drawing contour lines, contour lines.

本文详细描述了规则网格的等值线的生成算法,对初学者很有帮助

一个简单的等值线demo，可以设置采样点、网格大小，采样点还可以拖动，可动态的看出等值线的变化。-A simple contour demo, you can set the sampling point, the grid size, sampling points can also drag can be seen that dynamic contour changes.

反距离加权插值(IDW)，Gis二维等值线网格化中常用的,采用java语言实现，内有实例，测试代码，很实用的-Inverse distance weighted interpolation (IDW), Gis-dimensional contour grid commonly used, using java language, there are examples, test code, very useful