Function gradient

master.js:421–426

(colour, percent)

    var flaggedFeaturesCount = flaggedPoints / totalPoints;

    function gradient(colour, percent) {
      return 'linear-gradient(to top, ' +
        colour + ' 0%, ' + colour + ' ' +
        (percent * 100|0) + '%, transparent ' + (percent * 100|0) +
        '%,transparent 100%)';
    }
    var colour = getBrowserColour(id);
    elem
      .attr('data-num', i)