1. Installing CHAP¶
In this guide, you'll install the CHAP command-line tool. Once installed, you can run chap evaluate to test any model against real datasets — which you'll do in the next guide in this session.
Why CHAP?¶
CHAP (Climate and Health Assessment Platform) is a tool for developing and evaluating disease prediction models that use climate data. The chap command-line tool allows you to:
- Evaluate models on historical data
- Compare model performance
- Test your models before integrating them with DHIS2
Prerequisites¶
You should have uv installed from Session 2. If not, install it first:
Windows users: Use WSL (Windows Subsystem for Linux) as covered in Session 2.
Installing CHAP¶
Install CHAP as a global tool using uv:
This installs the chap command-line tool globally, making it available from any directory.
Exercise¶
Verify your installation¶
Run the following command:
You should see output listing available commands including evaluate, plot-backtest, and export-metrics.
Verification: If you see the help output with available commands, CHAP is installed correctly. You're ready for the next guide: Implement your own model from a minimalist example.