Method zoomIn

src/interaction/createZoomState.ts:19–19

* Zooms in around `center` by shrinking the span by `factor`. * * `factor <= 1` is treated as a no-op.

(center: number, factor: number)

   * `factor <= 1` is treated as a no-op.
   */
  zoomIn(center: number, factor: number): void;
  /**
   * Zooms out around `center` by growing the span by `factor`.
   *