refactor parcoords - init with new Array and use set instead of push
refactor parcoords - init with new Array and use set instead of push

etpinard/plotly.js,plotly/plotly.js,etpinard/plotly.js,etpinard/plotly.js,plotly/plotly.js,aburato/plotly.js,aburato/plotly.js,plotly/plotly.js,plotly/plotly.js