利用Python提取三维属性数据的路线剖面地形线绘制

Drawing topographic line of route section by Python to extract 3D property data

为解决在无数字化地形图的情况下自动生成信手剖面地形线的问题,提出一种基于Python和Section软件处理从RGMap系统导出的地质点属性数据的自动绘制方法。主要利用Python脚本提取地质点属性数据中的平面投影x、y坐标和高程数据,自动计算相邻地质点间的水平距离,通过累加求和的方式,获得包含各地质点横、纵坐标及点号的表格文件。结合Section软件表格数据投影、自动标注等功能即可自动绘制路线信手剖面地形线。利用Python提取、处理地质点属性数据,结合Section导入数据绘制地形线可极大地提高工作效率,减少人为因素带来的误差,提高数据的准确度。

In order to solve the problem of automatically generating topographic line of free hand section without digital topographic map,an automatic drawing method is proposed on the basis of Python and Section softwares for processing geological point attribute data exported from RGMap system.Python script is mainly used to extract the plane projection x,y coordinates and elevation data in the geological point attribute data,automatically calculate the horizontal distance between adjacent geological points,and obtain the table file of horizontal and vertical coordinates and point numbers of each point by accumulating and summing.Combined with Section software table data projection,automatic labeling and other functions,the topographic line of free hand section can be automatically drawn.The use of Python to extract and process geological point attribute data,combined with Section import data to draw topographic lines can greatly improve work efficiency,reduce errors caused by human factor,and improve data accuracy.