| 适用于道路沿线信息查询的矢量压缩算法 |
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| 引用本文： | 张丹,胡泊. 适用于道路沿线信息查询的矢量压缩算法[J]. 测绘通报, 2017, 0(9): 60-64. DOI: 10.13474/j.cnki.11-2246.2017.0288 |
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| 作者姓名： | 张丹 胡泊 |
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| 作者单位： | 1. 黄河水利职业技术学院, 河南 开封 475004;2. 河南理工大学矿山空间信息技术国家测绘地理信息局重点实验室, 河南 焦作 454003 |
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| 基金项目： | 2016年度国家重点研发计划重点专项 |
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| 摘 要： | 针对矢量数字地图中道路布局错综复杂的问题，提出了一种用于查询道路沿线信息的矢量压缩算法。该方法首先基于夹角和欧氏距离对道路端点与拐角凸侧地物点进行判断，然后利用矢量压缩算法对道路折线进行简化、分析地物点是否在道路沿线的缓冲区内，从而实现地物信息与道路沿线的邻近度判断。试验结果表明该方法的高效性和有效性，具有复杂道路情况下沿线地物点的查询分析功能。
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| 关 键 词： | GIS 缓冲区分析 叠加分析 矢量压缩 |
| 收稿时间： | 2017-06-21 |
A Vector Compression Algorithm for Information Searching on Road Polyline |
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| ZHANG Dan,HU Bo. A Vector Compression Algorithm for Information Searching on Road Polyline[J]. Bulletin of Surveying and Mapping, 2017, 0(9): 60-64. DOI: 10.13474/j.cnki.11-2246.2017.0288 |
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| Authors: | ZHANG Dan HU Bo |
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| Affiliation: | 1. Yellow River Conservancy Technical Institute, Kaifeng 475004, China;2. Key Laboratory of Mine Spatial Information Technologies, NASG, Henan Polytechnic University, Jiaozuo 454003, China |
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| Abstract: | Aiming at the intricate layout of roads on vector digital maps,the paper comes up with an algorithm for searching features information within road polyline buffer field based on vector compression.Judging the features information in endpoints and corner convex field with included angle and Euclidean distance,then simplify the road polyline by method of vector compression,analyze the proximity between point features and road polyline.And realize the searching function based on this method on Google Map.Experimental results show that the algorithm is efficient,fast and accurate for searching along the road polyline. |
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| Keywords: | GIS buffer analysis overlay analysis vector compression |
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