オープンソースのPythonツールを使用して、座標のリストからポリゴンシェープファイルを作成しようとしています。以下は、Python GDAL / OGRクックブックとこのGIS SEの回答から一緒にハッキングされた、これまでのところです。
同様の質問Pythonがあります:X、Y座標のリストからポリゴンシェープファイルを作成する方法?ただし、この質問はの使用に言及していpyshp
ます。ただし、gdal / ogr Pythonツールのみを使用してポリゴンシェープファイルを作成することに興味があります。
import ogr
def create_polygon(coords):
ring = ogr.Geometry(ogr.wkbLinearRing)
for coord in coords:
ring.AddPoint(coord[0], coord[1])
# Create polygon
poly = ogr.Geometry(ogr.wkbPolygon)
poly.AddGeometry(ring)
return poly.ExportToWkt()
def write_shapefile(poly, out_shp):
"""
/gis//a/52708/8104
"""
# Now convert it to a shapefile with OGR
driver = ogr.GetDriverByName('Esri Shapefile')
ds = driver.CreateDataSource(out_shp)
layer = ds.CreateLayer('', None, ogr.wkbPolygon)
# Add one attribute
layer.CreateField(ogr.FieldDefn('id', ogr.OFTInteger))
defn = layer.GetLayerDefn()
## If there are multiple geometries, put the "for" loop here
# Create a new feature (attribute and geometry)
feat = ogr.Feature(defn)
feat.SetField('id', 123)
# Make a geometry, from Shapely object
geom = ogr.CreateGeometryFromWkb(poly.wkb)
feat.SetGeometry(geom)
layer.CreateFeature(feat)
feat = geom = None # destroy these
# Save and close everything
ds = layer = feat = geom = None
def main(coords, out_shp):
poly = create_polygon(coords)
write_shapefile(poly, out_shp)
if __name__ == "__main__":
coords = [(-106.6472953, 24.0370137), (-106.4933356, 24.05293569), (-106.4941789, 24.01969175), (-106.4927777, 23.98804445), (-106.4922614, 23.95582128), (-106.4925834, 23.92302327), (-106.4924068, 23.89048039), (-106.4925695, 23.85771361), (-106.4932479, 23.82457675), (-106.4928676, 23.7922049), (-106.4925072, 23.75980241), (-106.492388, 23.72722475), (-106.4922574, 23.69464296), (-106.4921181, 23.6620529), (-106.4922734, 23.62926733), (-106.4917201, 23.59697561), (-106.4914134, 23.56449628), (-106.4912558, 23.5319045), (-106.491146, 23.49926362), (-106.4911734, 23.46653561), (-106.4910181, 23.43392476), (-106.4910156, 23.40119976), (-106.4909501, 23.3685223), (-106.4908165, 23.33586566), (-106.4907735, 23.30314904), (-106.4906954, 23.27044931), (-106.4906366, 23.23771759), (-106.4905894, 23.20499124), (-106.4905432, 23.17226022), (-106.4904748, 23.1395177), (-106.4904187, 23.10676788), (-106.4903676, 23.07401321), (-106.4903098, 23.04126832), (-106.4902512, 23.00849426), (-106.4901979, 22.97572025), (-106.490196, 22.97401001), (-106.6481193, 22.95609832), (-106.6481156, 22.95801668), (-106.6480697, 22.99082052), (-106.6480307, 23.02362441), (-106.6479937, 23.0563977), (-106.6479473, 23.0891833), (-106.647902, 23.12196713), (-106.6478733, 23.15474057), (-106.6478237, 23.18750353), (-106.6477752, 23.22026138), (-106.6477389, 23.25302505), (-106.647701, 23.28577123), (-106.6476562, 23.31851549), (-106.6476211, 23.3512557), (-106.6475745, 23.38397935), (-106.6475231, 23.41671055), (-106.6474863, 23.44942382), (-106.6474432, 23.48213255), (-106.6474017, 23.51484861), (-106.6474626, 23.54747418), (-106.647766, 23.57991134), (-106.6482374, 23.61220905), (-106.6484783, 23.64467084), (-106.6482308, 23.6775148), (-106.6479338, 23.7103854), (-106.6478395, 23.74309074), (-106.6472376, 23.77618646), (-106.6472982, 23.80876072), (-106.647127, 23.84151129), (-106.6471277, 23.8741312), (-106.6473995, 23.90656505), (-106.6473138, 23.93916488), (-106.6473408, 23.97172031), (-106.6473796, 24.00435261), (-106.6472953, 24.0370137)]
out_shp = r'X:\temp\polygon.shp'
main(coords, out_shp)
これは私が受け取っているエラーです:
runfile('X:/temp/corner_detection.py', wdir='X:/temp')
Traceback (most recent call last):
File "<ipython-input-40-952256a990f1>", line 1, in <module>
runfile('X:/temp/corner_detection.py', wdir='X:/temp')
File "C:\Program Files (x86)\Anaconda2\lib\site-packages\spyder\utils\site\sitecustomize.py", line 866, in runfile
execfile(filename, namespace)
File "C:\Program Files (x86)\Anaconda2\lib\site-packages\spyder\utils\site\sitecustomize.py", line 87, in execfile
exec(compile(scripttext, filename, 'exec'), glob, loc)
File "X:/temp/corner_detection.py", line 48, in <module>
main(coords, out_shp)
File "X:/temp/corner_detection.py", line 43, in main
write_shapefile(poly, out_shp)
File "X:/temp/corner_detection.py", line 20, in write_shapefile
layer = ds.CreateLayer('', None, ogr.wkbPolygon)
AttributeError: 'NoneType' object has no attribute 'CreateLayer'
問題はshapely
ジオメトリを読み取ろうとすることと関係があると確信しています。gdal / ogr pythonツールのみを使用して、座標のリストからポリゴンシェープファイルを作成するにはどうすればよいですか?