python - 创建形状文件

Question

我想使用 2 个点创建一个 shapefile(一条线)。

我有以下脚本:

import ogr, sys, os

line=ogr.Geometry(ogr.wkbLineString)
line.AddPoint(10,10)
line.AddPoint(20,20)

driver=ogr.GetDriverByName('ESRI Shapefile')
ds=driver.CreateDataSource('C:\test.shp')
layer=ds.CreateLayer('test', geom_type=ogr.wkbLineString)
fieldDefn=ogr.FieldDefn('id', ogr.OFTInteger)
layer.CreateField(fildDefn)
featureDefn=layer.GetLayerDefn()
feature=ogr.Feature(featureDefn)
feature.SetGeometry(line)
feature.SetField('id',1)
layer.CreateFeature(feature)

我有两个错误..

“错误 1:无法创建 file.shp 文件。错误 4:无法打开 Shapefile”

有人知道问题出在哪里吗？谁能帮我？非常感谢

Answer 1

您忘记通知大地测量系统。以下这种方式有效。

import ogr, sys, os
import osgeo.osr as osr

line=ogr.Geometry(ogr.wkbLineString)
line.AddPoint(10,10)
line.AddPoint(20,20)

driver=ogr.GetDriverByName('ESRI Shapefile')
ds=driver.CreateDataSource('test.shp')

srs = osr.SpatialReference()
srs.ImportFromEPSG(4326)

layer=ds.CreateLayer('test', srs, ogr.wkbLineString)
fieldDefn_=ogr.FieldDefn('id', ogr.OFTInteger)
layer.CreateField(fieldDefn_)
featureDefn=layer.GetLayerDefn()
feature=ogr.Feature(featureDefn)
feature.SetGeometry(line)
feature.SetField('id',1)
layer.CreateFeature(feature)