lar.style.display = 'none';
      this.$.histogram.style.display = 'none';
      this.$.close_histogram.style.display = 'none';
      this.$.open_histogram.style.visibility = 'hidden';

      if (!this.histogram) {
        this.$.missing.style.display = 'block';
        return;
      }

      this.$.missing.style.display = 'none';

      if (this.histogram instanceof tr.v.HistogramSet) {
        this.$.unmergeable.style.display = 'block';
        return;
      }

      if (!(this.histogram instanceof tr.v.H