| """ | |
| Faceted Density Estimates | |
| ------------------------- | |
| Density estimates of measurements for each iris flower feature | |
| """ | |
| # category: area charts | |
| import altair as alt | |
| from vega_datasets import data | |
| source = data.iris() | |
| alt.Chart(source).transform_fold( | |
| ['petalWidth', | |
| 'petalLength', | |
| 'sepalWidth', | |
| 'sepalLength'], | |
| as_ = ['Measurement_type', 'value'] | |
| ).transform_density( | |
| density='value', | |
| bandwidth=0.3, | |
| groupby=['Measurement_type'], | |
| extent= [0, 8] | |
| ).mark_area().encode( | |
| alt.X('value:Q'), | |
| alt.Y('density:Q'), | |
| alt.Row('Measurement_type:N') | |
| ).properties(width=300, height=50) | |