| 使用FME与VBA提取机场方格网高程数据 |
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| 引用本文： | 李丞鹏,羊远新,张蕴明.使用FME与VBA提取机场方格网高程数据[J].测绘通报,2021,0(8):129-134. |
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| 作者姓名： | 李丞鹏 羊远新 张蕴明 |
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| 作者单位： | 北京中天路通工程勘测有限公司,北京100124 |
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| 摘 要： | 因受机场工程设计软件的测量数据容量限制，基于LiDAR采集、点云分类后得到的地面点云数据LAS不能完整应用于目前设计软件进行设计计算。本文通过对拟选技术方案的筛选，提出了利用FME Workbench数据处理功能，结合VBA编程获取外部方格网平面数据的方法。该方法在FME Workbench中实现了地面点云数据构建TIN、采用逐点内插方法从TIN中提取方格网高程数据、等高线生成及相应图形处理与成果输出。最终通过实际算例证明了该方法的有效性。
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| 关 键 词： | FME VBA LAS 机场 方格网 TIN 等高线 |
| 收稿时间： | 2021-02-24 |
| 修稿时间： | 2021-06-21 |
Using FME and VBA to extract the elevation data of airport grid |
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| LI Chengpeng,YANG Yuanxin,ZHANG Yunming.Using FME and VBA to extract the elevation data of airport grid[J].Bulletin of Surveying and Mapping,2021,0(8):129-134. |
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| Authors: | LI Chengpeng YANG Yuanxin ZHANG Yunming |
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| Institution: | Beijing Zhongtianlutong Engineering Exploration & Surveying Co., Ltd., Beijing 100124, China |
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| Abstract: | The ground of the point cloud classification after get point cloud data currently in LAS cannot completely applied to design software for design calculation. Through the screening of the proposed technical scheme, the method of using the data processing function of FME Workbench combined with VBA programming to provide the plane data of external grid is proposed. In the FME Workbench, the ground point cloud data is used to construct TIN, the grid elevation data is extracted from TIN by point-by-point interpolation method, the contour line is generated, the corresponding graphic processing and the output of results are achieved, and the effectiveness of the method is demonstrated by the actual calculation examples. |
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| Keywords: | FME VBA LAS airport grid TIN contour |
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