Brokenspoke-analyzer

The Brokenspoke Analyzer is a tool allowing the user to run the Bicycle Network Analysis locally.

Requirements

Install the software below only if using the native Python method for running the Brokenspoke Analyzer as described under Quickstart.

• docker: official page
• docker compose plugin V2: official page
• osmium: official page
• osm2pgrouting: official page
• osm2pgsql: official page
• osmconvert: OSM wiki
• osmium-tool: official page
• psql: official page
• postgis: official page

Quickstart

There are 2 main ways to use the Brokenspoke Analyzer:

• All in Docker
• Native Python with the database running in a Docker container

The two methods are described in the sections below along with their advantages and inconveniences.

For more details about the different ways to run an analysis and how to adjust the options, please refer to the full documentation.

All in Docker

The benefit of running everything using the provided Docker images, is that there is no need to install any of the required dependencies, except Docker itself. This guarantees that the user will have the right versions of the multiple tools that are combined to run an analysis. This is the simplest and recommended way for people who just want to run the analyzer.

Export the database URL:

export DATABASE_URL=postgresql://postgres:postgres@postgres:5432/postgres

Start the database from Docker Compose, in the background:

docker compose up -d

And configure it:

docker run \
  --rm \
  --network brokenspoke-analyzer_default \
  -e DATABASE_URL \
  ghcr.io/peopleforbikes/brokenspoke-analyzer:2.4.0 \
  -vv configure custom 4 4096 postgres

Remark: refer to the last section of this guide to find the optimal values for your system

Run the analysis:

docker run \
  --rm \
  --network brokenspoke-analyzer_default \
  -e DATABASE_URL \
  ghcr.io/peopleforbikes/brokenspoke-analyzer:2.4.0 \
  -vv run "united states" "santa rosa" "new mexico" 3570670

Export the results:

docker run \
  --rm \
  --network brokenspoke-analyzer_default \
  -u $(id -u):$(id -g) \
  -v ./results:/usr/src/app/results \
  -e DATABASE_URL \
  ghcr.io/peopleforbikes/brokenspoke-analyzer:2.4.0 \
  -vv export local "united states" "santa rosa" "new mexico"

Clean up (required before attempting to run another analysis):

docker compose down
docker volume rm brokenspoke-analyzer_postgres

Native w/ Database-only in Docker

This method gives you the most control, and is recommended if you intend to work on the project.

Export the database URL:

export DATABASE_URL=postgresql://postgres:postgres@localhost:5432/postgres

At this point, all the requirements must be installed locally. Otherwise the brokenspoke-analyzer will not install.

Once all the tools are installed, the brokenspoke-analyzer can be installed. We recommend using Poetry for installing the tool and working in a virtual environment. Once you have Poetry set up:

git clone git@github.com:PeopleForBikes/brokenspoke-analyzer.git
cd brokenspoke-analyzer
poetry install

Run the analysis:

poetry run bna run-with compose "united states" "santa rosa" "new mexico" 3570670

This command takes care of starting and stopping the PostgreSQL/PostGIS server, running all the analysis commands, and exporting the results.

The data required to perform the analysis will be saved in data/santa-rosa-new-mexico-united-states, and the results exported in results/united-states/new mexico/santa rosa/23.11.

Configure the database manually

In most cases, the brokenspoke-analyzer will auto-detect this information. But sometimes the auto-detection might fail. Here are the commands that will help retrieve the resource allocation values.

Get the number of vCPUs allocated to Docker:

docker info --format json | jq .NCPU

Get the amount of memory (in MB) allocated to Docker:

docker info --format json | jq .MemTotal | numfmt --to-unit=1M

And then run the command to configure the database with custom values:

poetry run bna configure custom 4 4096 postgres