基于GMT的KML几何图元绘制方法

GMT as A Tool in Plotting KML Geometry Elements

Google Earth作为一款功能十分强大的虚拟地球软件,已经广泛应用于许多行业之中。在使用过程中用户往往需要输入大量的地理要素至Google Earth中,用于查看和分析。可以采用人机交互输入的方式,也可以将地理要素转换为KML文件后再导入Google Earth中。KML是Google Earth主要支持的文件格式,用于描述点、线、多边形、颜色、图标、视角等信息。为此,介绍一种批量地质信息快速生成KML文件的方法,即通过GMT软件中的gmt2kml命令,实现一个命令即可绘制出丰富的地理要素。结果表明,gmt2kml可以快速、准确的生成KML文件,提高工作效率。

As a very powerful virtual earth software, Google Earth has been widely used in many industries. Users often need to input a large number of geographical elements to Google Earth for viewing and analyzing. They can either use the man-machine interactive way to input the geographical elements, or turn the elements into KML files first and then import KML files with Google Earth. KML, the mail file format supported by Google Earth, is used to describe the point, line, polygon, color,icon, visual angle and other types of geographical elements. For this reason, this paper introduces a fast method to generate the KML file with the gmt2kml command in GMT,which supports six types of geometry elements. The results show that we can quickly and accurately generate KML files and can improve the efficiency with gmt2kml command.