draw(ctx) {
        ctx.lineWidth = this.lineWidth;
        const total = this.model.data.length;
        let i, d;
        for (i = 0; i < total; i++) {
            d = this.model.data[i];
            Color(ctx, i, d, this.color_);
            Lines(ctx, d);
        }
    }
Draw text in the Canvas element.
@param {CanvasRenderingContext2D} ctx