Type: { primary: "area" | "column" | "columnParallel" | "line" | "scatter"; secondary: "area" | "column" | "columnParallel" | "line" | "scatter"; } | { primary: "area" | "column" | "columnParallel" | "line" | "scatter"; secondary: "area" | "column" | "columnParallel" | "line" | "scatter"; }[] | undefined
双轴图的主次轴的图表类型, 用于定义双轴图的类型, 包括折线图, 柱状图, 面积图等, 当measures有多组时, dualChartType可以配置为数组, 每项对应一个双轴图的子图表类型.
示例 {primary: 'line', secondary: 'bar'} [{primary: 'line', secondary: 'bar'}, {primary: 'column', secondary: 'area'}]