- name
- who-growth-charts
- description
- Generate WHO child growth charts (height, weight, BMI) with percentile curves. Downloads official WHO reference data on demand. Use when users ask about child growth tracking, percentiles, or want growth charts for their kids.
- version
- 1.2.3
- homepage
- https://github.com/odrobnik/who-growth-charts-skill
- metadata
- {"openclaw": {"emoji": "📈", "requires": {"bins": ["python3"], "python": ["pandas", "matplotlib", "scipy", "openpyxl"]}}}
Generate WHO Child Growth Standards charts with percentile curves and child data overlay.
Features
- Height-for-age (0-19 years)
- Weight-for-age (0-10 years)
- BMI-for-age (0-19 years)
- Supports boys and girls
- Downloads WHO data on demand from cdn.who.int (cached locally)
- Overlays child's actual measurements with trend line
Examples
| Height | Weight | BMI |
|---|---|---|
| <img src="examples/anna_height.png" width="250"> | <img src="examples/anna_weight.png" width="250"> | <img src="examples/anna_bmi.png" width="250"> |
Prerequisites
Install Python dependencies:
pip install pandas matplotlib scipy openpyxlUsage
Basic Chart Generation
python3 ./scripts/growth_chart.py "Child Name" "DD.MM.YYYY" --sex F --type allArguments:
name: Child's name (used in chart title)birthdate: Date of birth in DD.MM.YYYY format--sex/-s:F(female) orM(male) — default: F--type/-t:height,weight,bmi, orall— default: all--data/-d: JSON file with measurement data--output/-o: Output directory for charts
With Measurement Data
Create a JSON file with height/weight measurements (heights in meters, weights in kg):
{
"heights": [ ["2024-01-15T10:00:00", 1.05] ],
"weights": [ ["2024-01-15T10:00:00", 17.5] ]
}python3 ./scripts/growth_chart.py "Emma" "06.07.2016" --sex F --data emma_data.json --type allIntegration with Withings
Combine with withings-family skill to fetch weight data automatically:
# Get Withings weight data (assuming withings-family skill is installed)
python3 ../withings-family/scripts/withings.py emma body > /tmp/withings.json
# Parse and generate charts
# (The growth chart script handles Withings JSON format if implemented, otherwise transform it)Output
By default, charts and cache are written to:
<workspace>/who-growth-charts/<workspace>/who-growth-charts/cache/
Where <workspace> is the folder that contains your skills/ directory (auto-detected from CWD or script location).