create label and positional annotation component

sample spec

var chart = g1.createChart('scatterplot', data, options)
chart.annotate(position, text, styles)
chart.label(data, {
  label: {
    col_name: [...],
    //example
    Continent: ['Asia', 'Europe'],
    ID: ['AND', 'ARB']
  },
  highlight: true,
  auto: false
})

src: https://blog.datawrapper.de/weeklychart-biocapacity/