问题1：

想树图实现鼠标提示轮播，可以循环展示的效果，这个是否可以实现？


解决方案：

通过客户端宏，让树图的鼠标提示效果可以循环跳动，如下图所示：



把下面宏代码复制到代码区域；


function main(page: IPage, portlet: IEChartsPortlet) {
    console.log('portlet: ', portlet)
    console.log('page: ', page)
    let options = portlet.getChartOptions() //获取组件对象
    var as = sessionStorage.getItem("one")
    console.log(as)
    if (as == null) {
        sessionStorage.setItem("one", "1")
        options.center = [100.405285, 35.904989]
        portlet.setChartOptions(options) //设置指标
    }

    let data = options.series[0].data
    let count = data.length
    let chartInstance = portlet.getChartInstance()
    // alert(portlet.getId())
    let curIndex = 0
    let lastIndex = -1
    let interval = setInterval(function () { // 定时器，但是没关
        try {
            // console.log('curIndex: ', curIndex)
            // console.log('lastIndex: ', lastIndex)
            if (lastIndex != -1) {

                chartInstance.dispatchAction({
                    type: 'downplay',
                    dataIndex: lastIndex
                });
                chartInstance.dispatchAction({
                    type: 'hideTip',
                    seriesIndex: 0,
                    dataIndex: lastIndex
                })

            }
            chartInstance.dispatchAction({
                type: 'highlight',
                dataIndex: curIndex

            });
            // setTimeout(function () {
            chartInstance.dispatchAction({
                type: 'showTip',
                seriesIndex: 0,
                dataIndex: curIndex
            });
            // },1)

            lastIndex = curIndex
            curIndex++
            
            if (curIndex >= count) {
                curIndex = 0
            }
            // this.mouseover()

        } catch (e) {
            console.error('e： ', e)
            clearInterval(interval)
        }
    }, 1500)


}