MarkColor

Auto-generated from the config schema in the source — see the config guide for concepts. Provided by the marks plugin. View source.

A mark's encoding.color: one CSS color or jexl: callback for every instance in value, or a field through scale, Vega-Lite's scale object: an ordinal scale (a range color per value), a linear, log or symlog scale (a ramp between domainMin and domainMax, domainMid placing its middle stop where a diverging ramp turns; symlog runs logarithmic away from 0 and linear through it, so a signed fold change ramps on both sides) or a threshold scale (a range color per interval between the cut points domain lists). A string is the field, as every channel's is inside encoding; a constant is { value }. legend shapes the key the scale draws.

Example usage#

{ mark: 'bar', encoding: { y: 'score', color: { value: 'steelblue' } } }

{ mark: 'point', encoding: { y: 'score', color: 'type' } }

{
  mark: 'point',
  encoding: {
    y: 'score',
    color: { field: 'strand', scale: { domain: ['1', '-1'] } },
  },
}

{
  mark: 'span',
  encoding: {
    color: {
      field: 'score',
      scale: {
        type: 'log',
        domainMin: 1,
        domainMax: 1000,
        range: ['white', 'red'],
      },
    },
  },
}

{
  mark: 'bar',
  encoding: {
    y: 'score',
    color: {
      field: 'score',
      scale: {
        type: 'linear',
        domainMin: -2,
        domainMax: 6,
        domainMid: 0,
        range: ['blue', 'white', 'red'],
      },
    },
  },
}

{
  mark: 'point',
  encoding: {
    y: 'score',
    color: {
      field: 'pip',
      scale: {
        type: 'threshold',
        domain: [0.1, 0.5],
        range: ['#357ebd', '#eea236', '#d43f3a'],
      },
      legend: { title: 'PIP', descending: true },
    },
  },
}

Config slots#

A setting written to it replaces it whole, since its members are alternatives: a member left out returns to its default. Slot types (fileLocation, frozen, ...) are explained in the config slot types reference. Slots a base configuration contributes are listed here too, so this table is the whole surface.

Related links#

• Config guide: GWAS track