Function cloneListForMapAndSample

libs/echarts/echarts-en.simple.js:31579–31609

(original, excludeDimensions)

// Data in excludeDimensions is copied, otherwise transfered.
function cloneListForMapAndSample(original, excludeDimensions) {
    var allDimensions = original.dimensions;
    var list = new List(
        map(allDimensions, original.getDimensionInfo, original),
        original.hostModel
    );
    // FIXME If needs stackedOn, value may already been stacked
    transferProperties(list, original);

    var storage = list._storage = {};
    var originalStorage = original._storage;

    // Init storage
    for (var i = 0; i < allDimensions.length; i++) {
        var dim = allDimensions[i];
        if (originalStorage[dim]) {
            // Notice that we do not reset invertedIndicesMap here, becuase
            // there is no scenario of mapping or sampling ordinal dimension.
            if (indexOf(excludeDimensions, dim) >= 0) {
                storage[dim] = cloneDimStore(originalStorage[dim]);
                list._rawExtent[dim] = getInitialExtent();
                list._extent[dim] = null;
            }
            else {
                // Direct reference for other dimensions
                storage[dim] = originalStorage[dim];
            }
        }
    }
    return list;
}

function cloneDimStore(originalDimStore) {
    var newDimStore = new Array(originalDimStore.length);