  console.log(arcData);
            const path = d3.arc().innerRadius(60).outerRadius(260);
            const color = d3.scaleOrdinal()
            .domain(data.map(d => d.city))
            .range(d3.schemeSet2.concat(d3.schemeSet3));
            
            svg.selectAll('path').data(arcData).join('path')
            .attr('d', path)
            .attr('transform', `translate(${width / 2}, ${height / 2})`)
            .attr('fill', d => color(d.data.city));

            const arcOuter = d3.arc().innerRadi