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.
Generate WHO Child Growth Standards charts with percentile curves and child data overlay.
| 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"> |
Install Python dependencies:
pip install pandas matplotlib scipy openpyxl
python3 ./scripts/growth_chart.py "Child Name" "DD.MM.YYYY" --sex F --type all
Arguments:
name: Child's name (used in chart title)birthdate: Date of birth in DD.MM.YYYY format--sex / -s: F (female) or M (male) — default: F--type / -t: height, weight, bmi, or all — default: all--data / -d: JSON file with measurement data--output / -o: Output directory for chartsCreate 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 all
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)
Charts are saved as PNG files in ~/clawd/who-growth-charts/ by default (or specified output directory).
Data cache and assets are stored in ~/clawd/who-growth-charts/cache/.