javascript - Plotly sorting dataset -

i havent been able find documentation hoping 1 of guys might able help.

i have following chart options:

var chardata = [{         x: x,         y: y,         type: 'bar',         marker: {             color: '#3bbfb9'         },         name: $filter('translate')('competences.graph.current')     }],     layout = {         legend: {             traceorder: 'reversed'         },         margin:{             b: 200         }     }; 

where x list of names , y looks this:

[1, 13, 13, 4, 4, 4, 4, 4, 4, 4, 4, 15, 6, 7, 7, 7, 7, 7, 7, 7, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9] 

now wish add sort functionality users can press , chart sorts (from low high)

however im not sure how this. plotly documentation doesnt state sorting data.

note if can set in chartdata configuration sorts low high helpful aswell!