osm_graphml_downloader's Introduction

OSM GraphML Downloader

Download .graphml of various network types from OpenStreetMap. This tool extends the fabulous osmnx library from Geoff Boeing.

Installation

Unhelpful Instructions

Download this repository

Install osmnx (v0.11+) and click

Anaconda

This tool has been tested most using Anaconda to manage the dependencies. An example of you might setup an environment using Anaconda's conda CLI tool is:

conda create -n osm_graphml_downloader
activate osm_graphml_downloader
conda install osmnx>=0.11 click -y

Then you can use your new environment to run this tool.

CLI

-x  --network_type  required  Network type: walk, bike, drive, drive_service, all, all_private, none
-o  --out_dir       required  Path to directory where you want the results to go
-f  --filename                Name of .graphml output file
-n  --north         required  Area of interest north extent
-s  --south         required  Area of interest south extent
-e  --east          required  Area of interest east extent
-w  --west          required  Area of interest west extent
--reproject                   Option to reproject graph from WGS84 to something else
--epsg_code                   EPSG code value. Only used if --reproject flag is used
--simplify                    Option to download a simplified network
--compress                    Compress final output using gzip

Usage Examples

Minimal Example

This example demonstrates CLI command using only the minimum required options.

python osm_graphml_downloader_cli.py -x walk -o "C:\Data Directory" -n 35.802884 -s 35.793138 -e -78.597478 -w -78.612413

# C:\Data Directory\graph_walk.graphml

All options

This example demonstrates what the CLI call would look like if set values for all the options.

python osm_graphml_downloader_cli.py -x walk -o "C:\Data Directory" -f neighborhood_walk_2264 -n 35.802884 -s 35.793138 -e -78.597478 -w -78.612413 --reproject --epsg_code 2264 --simplify --compress

# C:\Data Directory\neighborhood_walk_2264.graphml.gz

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