attribute {string} the feature property name where data is stored

• label {number}
  • text {string|Function} data label displayed. If this property is a

    function the args passed will be: currentVal, values, feature

  • stroke.
    • color {string} the color of the data label stroke
    • width {number} the width of the data label stroke
  • radiusIncrement {number} distance between text position origin and

               chart radius

  • fill {string} the color of the data label
  • font {string} the font family of the data label
  • scale {number} the scale of the data label. We can't use a font size so

     canvas will rescales the text

• fill {number} the color of the chart representation fill (if chart type = 'bar')

  this property sets the bar fill color

• legend {string} the layerswitcher legend label

[WARN] Notice that label property only will be applied if the geometry is not of type 'multipolygon' and chart type is distinct of 'bar' type