放大小叶图，并在图表上进行交叉过滤

Question

我有三个要在Crossfilter上过滤的图表。基本上，当我在图表上进行过滤时，这些功能也在我的传单地图上进行过滤。

var markersLayer = new L.LayerGroup();

   xdata = crossfilter(data);
              all = xdata.groupAll();
              dataCount.dimension(xdata)
                  .group(all);

var cities = xdata.dimension(function (d) { return d.City; });
var districttype = xdata.dimension(function (d) { return d.district; });
var allDim = xdata.dimension(function(d) {return d;});

...........

typeChart.on("filtered", function (chart, filter) { 

    //console.log('11111111111');
    //console.log(locations.top(Infinity));                 
      updateMap(locations.top(Infinity));

}); 

      dc.renderAll();

    // Called when dc.js is filtered (typically from user click interaction)
    var onFilt = function(chart, filter) {
    console.log('fffff');
      updateMap(locations.top(Infinity));
    };        


citiesChart.on("filtered", function (chart, filter) {   

    //console.log('11111111111');
    //console.log(locations.top(Infinity));                 
      updateMap(locations.top(Infinity));

}); 

      dc.renderAll();

    // Called when dc.js is filtered (typically from user click interaction)
    var onFilt = function(chart, filter) {
    console.log('fffff');
      updateMap(locations.top(Infinity));
    };  



districtChart.on("filtered", function (chart, filter) { 

    //console.log('11111111111');
    //console.log(locations.top(Infinity));                 
      updateMap(locations.top(Infinity));

}); 

      dc.renderAll();

    // Called when dc.js is filtered (typically from user click interaction)
    var onFilt = function(chart, filter) {
    console.log('fffff');
      updateMap(locations.top(Infinity));
    };       



    });

我希望传单可以根据图表的过滤方式放大地图。在脚本的结尾，我将其添加为缩放功能。

markersLayer.clearLayers（）;

    allDim.top(Infinity).forEach(function (d) {
            var marker = L.marker([d.latitude, d.longitude]);
            markersLayer.addLayer(marker);
          });
          map.addLayer(markersLayer);
          map.fitBounds(markersLayer.getBounds());

            dc.renderAll();

错误：未捕获ReferenceError：未定义allDim

我有两个问题。我收到此错误代码，因为AllDim在我的RenderAll函数之前。但是，如果我将我的getbound函数放在过滤函数之前，则图表将不再显示。反正要解决这个问题？

第二，这是在跨滤镜上使用获取范围进行缩放的正确方法吗？我找不到使用此功能的任何良好示例。