contours drawing 等值线绘制
The NCAR Graphics home page provides a stable UNIX package for drawing contours, maps, surfaces, weather maps, x-y plots, and many others.
NCAR Graphics主页提供了一个稳定的UNIX包用来绘制轮廓图、地图、表面图、气象图、x - y图以及很多其他图形。
To realize searching synoptic situations, a method of drawing contours is introduced, which is based on grid data of regular square matrix.
介绍用规则四方矩阵网格资料绘制等值线，实现天气形势检索的思路方法。
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