Function getMethodMapKey

_benchmarks/sample_echarts.js:20360–20362

(sourceFormat, seriesLayoutBy)

    }

    function getMethodMapKey(sourceFormat, seriesLayoutBy) {
      return sourceFormat === SOURCE_FORMAT_ARRAY_ROWS ? sourceFormat + '_' + seriesLayoutBy : sourceFormat;
    } // ??? FIXME can these logic be more neat: getRawValue, getRawDataItem,
    // Consider persistent.
    // Caution: why use raw value to display on label or tooltip?
    // A reason is to avoid format. For example time value we do not know