XYZ Spaces for Python

This package allows you to use your XYZ Hub server or HERE Data Hub from Python.

The image below is what you get when running the notebook in docs/notebooks/demo.ipynb, which demonstrates how to use some features of the XYZ Hub's RESTful API to:

• create an XYZ space
• add features from a GeoJSON file
• extract a single feature as a whole or within some bounding box (with and without clipping)
• delete the XYZ space

The example GeoJSON file is fetched from a third-party GitHub account and is rendered using Leaflet for simplicity.

Prerequisites

Before you can install this package, run its test-suite or use the example notebooks to make sure your system meets the following prerequisities:

• A Python installation, 3.6+ recommended, with the pip command available to install dependencies

• A HERE developer account, free and available under HERE Developer Portal

• An XYZ API access token from your XYZ Hub server or the XYZ portal (see also its Getting Started section) in an environment variable named XYZ_TOKEN which you can set like this (with a valid value, of course):

  export XYZ_TOKEN="MY-FANCY-XYZ-TOKEN"
  

  If you prefer, you can alternatively provide this token as a parameter in your code.

Installation

This package can be installed with pip from various sources:

• Install from its source repository on GitHub:

  pip install -e git+https://github.com/heremaps/xyz-spaces-python#egg=xyzspaces
  

• Install from the Python Package Index:

  pip install xyzspaces
  

If you want to run the test suite or experiment with the example notebooks bundled, you need to clone the whole repository:

• Make a local clone of the repository hosting this package. The following command should do:

  git clone https://github.com/heremaps/xyz-spaces-python.git
  

• Change into the repo root directory:

  cd xyzspaces
  

See the next section for how to run the test suite.

Test Suite

You can run the test suite locally:

pip install -r requirements_dev.txt
pytest -v --cov=xyzspaces tests

The test suite provides test coverage of around 90% (but less if the tests cannot find your credentials).

Documentation

For now, the documentation consists of a small number of example Jupyter notebooks in the docs/notebooks directory plus an API reference, which is automatically generated from the docstrings in the code.

Jupyter Notebooks

See docs/notebooks/README.md to learn how to install and use the example Jupyter notebooks.

API Reference

To generate the API reference locally in docs/apiref/_build/html run this command:

bash scripts/build_apiref.sh

Hello World Example

The following is a tiny "Hello World"-like example that you can run to have a successful first XYZ experience right after installation! Just make sure to use your own real XYZ token!

import json
import xyzspaces as xyz
from geojson import FeatureCollection

xyz = xyz.XYZ(credentials="MY_XYZ_TOKEN")

# Creating a New Space
title = "My Demo Space"
description = "Description as markdown"
space = xyz.spaces.new(title=title, description=description)

# Add a Feature to a Space
features =  {
    "type": "Feature",
    "properties": {"party": "Republican"},
    "geometry": {
        "type": "Polygon",
        "coordinates": [[
            [-104.05, 48.99],
            [-97.22,  48.98],
            [-96.58,  45.94],
            [-104.03, 45.94],
            [-104.05, 48.99]
        ]]
    }
}

feature_id = space.add_features(features=FeatureCollection([features]))["features"][0]["id"]

# Reading a Feature from a Space
feature = space.get_feature(feature_id=feature_id)
print(json.dumps(feature, indent=4, sort_keys=True))

Logging Configuration

Set the variable XYZ_LOG_CONFIG to hold the full path of the logging configuration options file logging_config.json:

export XYZ_LOG_CONFIG=~/logging_config.json

This ensures that log messages will be written to the file xyz.log in your current working directory.

Note that by default, only error messages are logged to the console.

Here is an example log file (xyz.log):

2020-02-21 17:55:46,132 - apis.py:130 - ERROR - Curl command: curl --request GET https://xyz.api.here.com/hub/spaces/dummy-111 --header "Authorization: Bearer <XYZ_TOKEN>"
2020-02-21 17:55:46,133 - apis.py:131 - ERROR - Response status code: 404
2020-02-21 17:55:46,133 - apis.py:132 - ERROR - Response headers: {'Content-Type': 'application/json', 'Content-Length': '150', 'Connection': 'keep-alive', 'Date': 'Fri, 21 Feb 2020 12:25:46 GMT', 'x-amzn-RequestId': '397c8039-79f1-4956-bbe4-46ca78c7ec2d', 'content-encoding': 'gzip', 'Stream-Id': '397c8039-79f1-4956-bbe4-46ca78c7ec2d', 'x-amzn-Remapped-Content-Length': '150', 'x-amzn-Remapped-Connection': 'keep-alive', 'x-amz-apigw-id': 'IPzblGVFjoEF5pg=', 'x-amzn-Remapped-Date': 'Fri, 21 Feb 2020 12:25:46 GMT', 'X-Cache': 'Error from cloudfront', 'Via': '1.1 e25383e25378de918d3b187b3239eb5b.cloudfront.net (CloudFront)', 'X-Amz-Cf-Pop': 'BOM51-C2', 'X-Amz-Cf-Id': 'nZAJUB_FBiHdojziSoG3SBcMdf8rNyHuOMSlJljyxDNlx1I0O3t9YQ=='}
2020-02-21 17:55:46,134 - apis.py:133 - ERROR - Response text: {"type":"ErrorResponse","error":"Exception","errorMessage":"The requested resource does not exist.","streamId":"397c8039-79f1-4956-bbe4-46ca78c7ec2d"}

License

Copyright (C) 2019-2020 HERE Europe B.V.

Unless otherwise noted in LICENSE files for specific directories, the LICENSE in the root applies to all content in this repository.