canvas = {
var width = 700;
var height = 50;
var max_count = altayregion_data.length;
const context = DOM.context2d(width, height);
context.fillStyle = "hsl(216deg 100% 13%)";
context.fillRect(range_A*(width/Math.max.apply(null,m)), 0, range_B*(width/Math.max.apply(null,m)), height);
context.canvas.style.background = "hsl(216deg 25% 90%)";
return context.canvas;
}