} else if (this.brush === 'y') {
          this.yScale.domain = [selection[0], selection[1]].map(this.yScale.scaleObject.invert)
        } else {
          this.xScale.domain = [selection[0][0], selection[1][0]].map(this.xScale.scaleObject.invert)
          this.yScale.domain = [selection[1][1], selection[0][1]].map(this.yScale.scaleObject.invert)