https://github.com/geoadmin/lib-esrijson

Parser of the infamous ESRI GeoJSON
https://github.com/geoadmin/lib-esrijson

esri geometry managed-by-tf python

Last synced: about 1 month ago
JSON representation

Parser of the infamous ESRI GeoJSON

• Host: GitHub
• URL: https://github.com/geoadmin/lib-esrijson
• Owner: geoadmin
• License: bsd-2-clause
• Created: 2017-06-14T09:29:04.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2023-12-11T14:40:55.000Z (about 1 year ago)
• Last Synced: 2024-10-29T01:18:53.900Z (about 2 months ago)
• Topics: esri, geometry, managed-by-tf, python
• Language: Python
• Homepage:
• Size: 34.2 KB
• Stars: 5
• Watchers: 14
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
esrijson

========

[![Build Status](https://travis-ci.org/geoadmin/lib-esrijson.svg?branch=master)](https://travis-ci.org/geoadmin/lib-esrijson)

Introduction

------------

This module is meant to build a bridge between GDAL `__geo_interface__` property via [Shapely](https://github.com/Toblerity/Shapely).

There is no concept of `GeometryCollection` in esrijson syntax, so there is only a limited support for this concept. Currently, we only take the first geometry and drop the rest.

This library is heavily inspired by [python-geojson](https://github.com/frewsxcv/python-geojson).

Usage

-----

```python

import esrijson

from shapely import geometry

# Create an esrijson feature

feat = esrijson.Feature(geometry=geometry.Point(1, 4), attributes={'name': 'dummy', 'val': 1}, wkid=2056)

# Dump to json

dumped = esrijson.dumps(feat)

# Load to Feature back again

loaded = esrijson.loads(dumped)

print(loaded)

print(type(loaded))

>>> {'geometry': {'y': 4.0, 'x': 1.0}, 'spatialReference': {u'wkid': 2056}},'attributes': {u'name': u'dummy', u'val': 1}}

>>> 

# You can also transform an esri json like object into a shapely object

geom = esrijson.to_shape({"paths": [[[0.0, 0.0], [1.0, 1.0]], [[-1.0, 0.0], [1.0, 0.0]]]})

print(getattr(geom, '__geo_interface__')

>>> {'type': 'MultiLineString', 'coordinates': (((0.0, 0.0), (1.0, 1.0)), ((-1.0, 0.0), (1.0, 0.0)))}

# And of your do the same operation back again

esri_geom = esrijson.from_shape(geom)

print(esri_geom)

>>> {'paths': (((0.0, 0.0), (1.0, 1.0)), ((-1.0, 0.0), (1.0, 0.0)))}

```

ESRI specs references

---------------------

- [Geometry Object](http://resources.arcgis.com/en/help/arcgis-rest-api/index.html#//02r3000000n1000000)

- [Feature Object](http://resources.arcgis.com/en/help/arcgis-rest-api/index.html#/Feature_object/02r3000000n8000000/)