		    .text("No available data");
	    } else if (d3.max(serie.kde) == d3.min(serie.kde)) {
		pdfgraph.append("text")
		    .attr("x", wsvg/2)
		    .attr("y", hsvg/2)
		    .attr("class", "warningtext")
		    .text("All data have same value.");
	    } else {
		const data = serie.kde;
		//Some default values
		const min_slider = (d3.max(data)-d3.min(data))/data.length;
		const max_slider = (d3.max(data)-d3.min(data))/30;
		let vslider = min_slider;

		//Radio buttons
		const form = d3.select("#radio_div"+i)