viewof view = embed({
$schema: 'https://vega.github.io/schema/vega-lite/v4.json',
width: 800,
height: 400,
data: {
values: drawData,
name: 'source'
},
mark: 'area',
encoding: {
x: {field: 'position', type: 'quantitative'},
y: {field: 'value', type: 'quantitative'},
}
})