用Arcpy编写点线面要素转ASCII文本（txt）

最新推荐文章于 2023-09-01 10:25:17 发布

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该博客分享了使用Python的Arcpy模块将点、线、面矢量要素转换为文本文件的实现过程。通过SearchCursor遍历要素，获取几何信息并写入文本，详细展示了点、线、面的转换脚本，强调了运行时需关闭ArcMap。

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最近在学Arcpy顺带做了点线面要素转线要素的实验
arcpy一定要先下arcpy，然后在环境里面选择arcpy的py框架
以下为实验数据：
在这里插入图片描述
注意：运行程序时一定要关闭arcmap一定要！

（1）我先做的是点、线、面要素的特征点转换为文本文件
以下为脚本截图
以下为点矢量转txt文本

#coding:utf-8
import  arcpy

txtPath = r"C:\Users\lenovo\Desktop\arcpy\test\points.txt"#不能识别汉字
shpPath = r"C:\Users\lenovo\Desktop\arcpy\test\点.shp"

with open(txtPath, "w") as filename:
    cur = arcpy.SearchCursor(shpPath)
    filename.write("Points" + "\n")
    pointindex = 0
    index = 0
    for r in cur:
        index=index+1
        geom = r.shape
        point = geom.getPart()
        #for point in points:
        info = str(pointindex) + " " + str(point.X) + " " + str(point.Y) + "\n"
        filename.write((info))
        pointindex = pointindex + 1
    print index
    print "finished"

此为线矢量转txt文本

#coding:utf-8
import  arcpy

txtPath = r"C:\Users\lenovo\Desktop\arcpy\test\polylines.txt"
shpPath = r"C:\Users\lenovo\Desktop\arcpy\test\线.shp"

with open(txtPath, "w") as filename:
   cur = arcpy.SearchCursor(shpPath)
   lineindex = 0
   filename.write("Polyline" + "\n")
   for r in cur:
       line = r.getValue("SHAPE")
       array = line.getPart(0)  # 得到每条线上每个点的数据
       pointindex = 0
       filename.write(str(pointindex) + " " + str(lineindex) + "\n")
       lineindex = lineindex + 1
       for i in range(0, array.count):
           print array.count
           info = str(pointindex) + " " + str(array[i].X) + " " + str(array[i].Y) + "\n"
           filename.write((info))
           pointindex = pointindex + 1
   print "finished"

此为面矢量转txt文本

#coding:utf-8
import  arcpy

txtPath = r"C:\Users\lenovo\Desktop\arcpy\test\polygan.txt"#不能识别汉字
shpPath = r"C:\Users\lenovo\Desktop\arcpy\test\面.shp"

with open(txtPath, "w") as filename:
    cur = arcpy.SearchCursor(shpPath)
    areaindex = 0
    filename.write("Polygan" + "\n")
    for r in cur:
        line = r.getValue("SHAPE")
        array = line.getPart(0)  # 得到每条上每个点的数据
        pointindex = 0
        filename.write(str(pointindex) + " " + str(areaindex) + "\n")
        areaindex = areaindex + 1
        for i in range(1, array.count):
            info = str(pointindex) + " " + str(array[i].X) + " " + str(array[i].Y) + "\n"
            filename.write((info))
            pointindex = pointindex + 1
    print "finished"

运行后的效果截图：
在这里插入图片描述