Shapefile into geojson conversion 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)

When I convert into geojson, I get output, but only one feature is getting formatted as JSON

I got output like this:

{"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}}..................

I would like to get output like this:

{"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}}**,**

It would help if you provide a working example. Its impossible to answer if your problem cannot be replicated. — Rutger Kassies
– Rutger Kassies, Commented Apr 3, 2017 at 12:18
@RutgerKassies. The correct procedure is to make the appropriate close vote in that case. — Mad Physicist
– Mad Physicist, Commented Apr 3, 2017 at 15:50
Hey there Srinuvas Bathula: This answer is getting a lot of views, it's been nearly 3 years. As this is the sole answer and the question and answer are getting quite some positive feedback, would you mind marking it as correct ? :) — alexisdevarennes
– alexisdevarennes, Commented Dec 10, 2019 at 10:57

alexisdevarennes · Accepted Answer · 2020-08-31 13:10:12Z

43

For conversion between shapefile and geojson I would definitely use geopandas:

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

edited Aug 31, 2020 at 13:10

alexisdevarennes

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answered May 9, 2020 at 12:53

Kristian K

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alexisdevarennes · Accepted Answer · 2020-08-31 13:14:24Z

Please check out the following library: 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()

As noted in other answers, you could use geopandas:

import geopandas

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

bwl1289 · Accepted Answer · 2021-01-29 22:47:56Z

6

To add onto @alexisdevarennes.

You can now convert to geojson using PyShp in 1 or two lines:

import shapefile

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

or

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

example usage:

>>> geojson_data["type"]

'MultiPolygon'

answered Jan 29, 2021 at 22:47

bwl1289

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1 Comment

Declan Over a year ago

This worked great but did not work with the .shp file for what I was doing; instead required the .dbf file. I was using files provided from Census: census.gov/geographies/mapping-files/time-series/geo/…

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