Method updateImage

js/src/mimeExtension.ts:82–86

(png_data: string)

  }

  private updateImage(png_data: string) {
    this.hideGraph();
    this._img_el.src = "data:image/png;base64," + <string>png_data;
    this.showImage();
  }

  private hideGraph() {
    // Hide the graph if there is one