index

Index(key) from data row.

Also read chart categories.

Example

Data index

index: 'name',

Example

Chart categories

columns: [{
  title: 'Year',
  index: 'xAxis.categories',
  editable: false
},{

Example

data: [
  ...
  {id: 1, name: 'Sorento', year2015: [7543, 8518, 10842, 9808, 10743, 8967, 9749, 10211, 9380, 8593, 9023, 12872]},
  ...
],
...
columns: [{
...
},{
  title: 'January',
  index: 'year2015[0]',      
  format: 'number'
},{
...
},{
  title: 'Total',
  rightLocked: true,
  index: 'year2015[0] + year2015[1] + year2015[2] + year2015[3] + year2015[4] + year2015[5] + year2015[6] + year2015[7] + year2015[8] + year2015[9] + year2015[10] + year2015[11]',
  format: 'number'
...

Default

Column order number index.