Shapefile 到 geojson 转换 python 3

Question

output_buffer = []
for features in range(0,layer.GetFeatureCount()):
    feat = layer.GetNextFeature()
    geom = feat.GetGeometryRef()
    result = feat.ExportToJson()
    output_buffer.append(result)

当我转换成 geojson 时，我得到了输出，但只有一个特征被格式化为 JSON

我得到这样的输出：

{"geometry": {"coordinates": [488081.726322771, 2360837.62927308], "type": "Point"}, "type": "Feature", "id": 0, "properties": {"EntityHand": null, "Layer": "pipe", "Linetype": null, "Text": "BB_D2", "ExtendedEn": null, "SubClasses": null}}{"geometry": {"coordinates": [487523.119248441, 2361228.95273474], "type": "Point"}, "type": "Feature", "id": 1, "properties": {"EntityHand": null, "Layer": "pipe", "Linetype": null, "Text": "Mil_D2", "ExtendedEn": null, "SubClasses": null}}..................

我想得到这样的输出：

{"geometry": {"coordinates": [488081.726322771, 2360837.62927308], "type": "Point"}, "type": "Feature", "id": 0, "properties": {"EntityHand": null, "Layer": "pipe", "Linetype": null, "Text": "BB_D2", "ExtendedEn": null, "SubClasses": null}}**,**    
{"geometry": {"coordinates": [487523.119248441, 2361228.95273474], "type": "Point"}, "type": "Feature", "id": 1, "properties": {"EntityHand": null, "Layer": "pipe", "Linetype": null, "Text": "Mil_D2", "ExtendedEn": null, "SubClasses": null}}**,**

Answer 1

请查看以下图书馆：https://pypi.python.org/pypi/pyshp/1.1.7

import shapefile
from json import dumps

# read the shapefile
reader = shapefile.Reader("my.shp")
fields = reader.fields[1:]
field_names = [field[0] for field in fields]
buffer = []
for sr in reader.shapeRecords():
    atr = dict(zip(field_names, sr.record))
    geom = sr.shape.__geo_interface__
    buffer.append(dict(type="Feature", \
    geometry=geom, properties=atr)) 
   
    # write the GeoJSON file
   
geojson = open("pyshp-demo.json", "w")
geojson.write(dumps({"type": "FeatureCollection", "features": buffer}, indent=2) + "\n")
geojson.close()

如其他答案所述，您可以使用 geopandas：

import geopandas

shp_file = geopandas.read_file('myshpfile.shp')
shp_file.to_file('myshpfile.geojson', driver='GeoJSON')

Answer 2

对于 shapefile 和 geojson 之间的转换，我肯定会使用 geopandas:

    import geopandas
    myshpfile = geopandas.read_file('myshpfile.shp')
    myshpfile.to_file('myJson.geojson', driver='GeoJSON')

Answer 3

添加到@alexisdevarennes。

您现在可以在 1 或两行中使用 PyShp 转换为 geojson：

import shapefile

with shapefile.Reader("shapefile.shp") as shp:
    geojson_data = shp.__geo_interface__

或

geojson_data = shapefile.Reader("shapefile.shp").__geo_interface__

用法示例：

>>> geojson_data["type"]

'MultiPolygon'

Shapefile 到 geojson 转换 python 3

Shapefile into geojson conversion python 3

python

json

append

shapefile

gdal