问用于从错误组中删除气泡图的dc.js分组

EN

var
    filterPieChart=dc.pieChart("#filterPieChart"),
    bubbleChart = dc.bubbleChart('#bubbleChart'),
    dataTable = dc.dataTable('#data-table');

var
  bubbleChartDim=ndx.dimension(dc.pluck("identifier1")),
  filterPieChartDim=ndx.dimension(dc.pluck("filterColumn")),
  allDim = ndx.dimension(function(d) {return d;});

var filterPieChartGroup=filterPieChartDim.group().reduceCount();

function reduceFieldsAdd(fields) {
    return function(p, v) {
        fields.forEach(function(f) {
            p[f] += 1*v[f];
        });
        return p;
    };
}

function reduceFieldsRemove(fields) {
    return function(p, v) {
        fields.forEach(function(f) {
            p[f] -= 1*v[f];
        });
        return p;
    };
}
function reduceFieldsInitial(fields) {
    return function() {
        var ret = {};
        fields.forEach(function(f) {
            ret[f] = 0;
        });
        return ret;
    };
}

var fieldsToReduce=['xVal', 'yVal', 'rVal'];
var bubbleChartGroup = bubbleChartDim.group().reduce(
    reduceFieldsAdd(fieldsToReduce), 
    reduceFieldsRemove(fieldsToReduce),
    reduceFieldsInitial(fieldsToReduce)
);


filterPieChart
    .dimension(filterPieChartDim)
    .group(filterPieChartGroup)

bubbleChart
    .dimension(bubbleChartDim)
    .group(bubbleChartGroup)
    .keyAccessor(function (p) { return p.value.xVal; })
    .valueAccessor(function (p) { return p.value.yVal; })
    .radiusValueAccessor(function (p) { return p.value.rVal; })