Function aggregateOneArray

src/transforms/aggregate.js:250–270

(gd, trace, groupings, aggregation)

};

function aggregateOneArray(gd, trace, groupings, aggregation) {
    if(!aggregation.enabled) return;

    var attr = aggregation.target;
    var targetNP = Lib.nestedProperty(trace, attr);
    var arrayIn = targetNP.get();
    var conversions = Axes.getDataConversions(gd, trace, attr, arrayIn);
    var func = getAggregateFunction(aggregation, conversions);

    var arrayOut = new Array(groupings.length);
    for(var i = 0; i < groupings.length; i++) {
        arrayOut[i] = func(arrayIn, groupings[i]);
    }
    targetNP.set(arrayOut);

    if(aggregation.func === 'count') {
        // count does not depend on an input array, so it's likely not part of _arrayAttrs yet
        // but after this transform it most definitely *is* an array attribute.
        Lib.pushUnique(trace._arrayAttrs, attr);
    }
}

function getAggregateFunction(opts, conversions) {
    var func = opts.func;