基于VB的EPS脚本技术在铁路地形图中的应用

Application of EPS Script Technology based on VB in Railway Topographic Map

在铁路地形图编辑过程中,等高线和高程点等地形表示要素的传统编辑方法存在效率与准确率过低等问题,可使用VBScript语言进行相关功能的脚本程序定制开发予以解决。利用用户自定义条件下判定、打断与裁剪等操作响应方法,设计等高线批量处理的脚本;基于指定图层地物属性赋值操作函数,可实现统一改正任何指定区域内高程点高程的功能,最终得到完整可运行的脚本程序。工程实践表明,利用脚本之后,地形图编辑效率较传统人工方法提高4倍以上,编辑人员的劳动强度得到明显降低,且成图准确率大幅度提升,为EPS脚本在铁路地形图中的应用提供了更多的思路与方向。

In the process of editing the railway topographic map,the traditional editing methods of terrain representation elements such as contour lines and elevation points have problems of low efficiency and accuracy.VBScript language can be used to customize the development of script programs for related functions.User-defined conditions to determine,interrupt and cut operation response methods could be adopted to design contour batch processing scripts;based on the specified layer features assignment operation function,the function of uniformly correcting the elevation points in any specified area could be realized;a complete and runnable script is programmed.Engineering practice shows that after using scripts,the editing efficiency of topographic maps is increased by more than 4 times compared with traditional manual methods.The labor intensity of editors is significantly reduced,and the accuracy of mapping is greatly improved.The method provides ideas and solutions for the application of EPS scripts in railway topographic maps.