i)
   	      .style("grid-row", (data,i) =>""+(4*i+5))
   	      .style("grid-column", "2");

	// Containers for kde/hist controlers
	kde_controler = main
	      .selectAll(".kde-controler")
	      .data(inputs.series)
	      .enter()
	      .append("div")
              .attr("class", "kde-controler")
	      .attr("id", (data, i) => "kde-controler-"+i)
   	      .style("grid-row", (data,i) =>""+(4*i+6))
              .style("grid-column", "2");
    }

    // ************************************************ 