Function retrieveRawValue

src/data/helper/dataProvider.ts:500–533

(
    data: SeriesData, dataIndex: number,
    // If dimIndex is null/undefined, return OptionDataItem.
    // Otherwise, return OptionDataValue.
    dim?: DimensionLoose | NullUndefined
)

// value may be 0.91000000001, which have brings trouble to display.
// TODO: consider how to treat null/undefined/NaN when display?
export function retrieveRawValue(
    data: SeriesData, dataIndex: number,
    // If dimIndex is null/undefined, return OptionDataItem.
    // Otherwise, return OptionDataValue.
    dim?: DimensionLoose | NullUndefined
): OptionDataValue | OptionDataItem {
    if (!data) {
        return;
    }

    // Consider data may be not persistent.
    const dataItem = data.getRawDataItem(dataIndex);

    if (dataItem == null) {
        return;
    }

    const store = data.getStore();
    const sourceFormat = store.getSource().sourceFormat;

    if (dim != null) {
        const dimIndex = data.getDimensionIndex(dim);
        const property = store.getDimensionProperty(dimIndex);

        return getRawSourceValueGetter(sourceFormat)(dataItem, dimIndex, property);
    }
    else {
        let result = dataItem;
        if (sourceFormat === SOURCE_FORMAT_ORIGINAL) {
            result = getDataItemValue(dataItem);
        }
        return result;
    }
}


/**