         });
        }

        initPointHelpers() {
          this.scatterMeta.forEach(s => {           
            let ph = new Lore.Helpers.PointHelper(
              this.lore, s.name, s.shader, { maxPointSize: s.max_point_size }
            );

            ph.setXYZRGBS(data[s.name].x, data[s.name].y, data[s.name].z, 
                          data[s.name]['colors'][0].r, data[s.name]['colors'][0].g, 
                          data[s.name]['colors'][0].b, data[s.name]['s'] ? data[s.name]['s'][0] : 1.0