docs: function doGuessOrdinal(
      data, sourceFormat, seriesLayoutBy, dimensionsDefine, startIndex, dimIndex
  ) {
      var result;
      // Experience value.
      var maxLoop = 5;
  
      if (isTypedArray(data)) {
          return false;
      }
  
      // When sourceType is 'objectRows' or 'keyedColumns', dimensionsDefine
      // always exists in source.
      var dimName;
      if (dimensionsDefine) {
          dimName = dimensionsDefine[dimIndex];
          dimName = isObject(dimName) ? dimName.name : dimName;
      }
  
      if (sourceFormat === SOURCE_FORMAT_ARRAY_ROWS) {
          if (seriesLayoutBy === SERIES_LAYOUT_BY_ROW) {
              var sample = data[dimIndex];
              for (var i = 0; i < (sample || []).length && i < maxLoop; i++) {
                  if ((result = detectValue(sample[startIndex + i])) != null) {
                      return result;
                  }
              }
          }
          else {
              for (var i = 0; i < data.length && i < maxLoop; i++) {
                  var row = data[startIndex + i];
                  if (row && (result = detectValue(row[dimIndex])) != null) {
                      return result;
                  }
              }
          }
      }
      else if (sourceFormat === SOURCE_FORMAT_OBJECT_ROWS) {
          if (!dimName) {
              return;
          }
          for (var i = 0; i < data.length && i < maxLoop; i++) {
              var item = data[i];
              if (item && (result = detectValue(item[dimName])) != null) {
                  return result;
              }
          }
      }
      else if (sourceFormat === SOURCE_FORMAT_KEYED_COLUMNS) {
          if (!dimName) {
              return;
          }
          var sample = data[dimName];
          if (!sample || isTypedArray(sample)) {
              return false;
          }
          for (var i = 0; i < sample.length && i < maxLoop; i++) {
              if ((result = detectValue(sample[i])) != null) {
                  return result;
              }
          }
      }
      else if (sourceFormat === SOURCE_FORMAT_ORIGINAL) {
          for (var i = 0; i < data.length && i < maxLoop; i++) {
              var item = data[i];
              var val = getDataItemValue(item);
              if (!isArray(val)) {
                  return false;
              }
              if ((result = detectValue(val[dimIndex])) != null) {
                  return result;
              }
          }
      }
  
      function detectValue(val) {
          // Consider usage convenience, '1', '2' will be treated as "number".
          // `isFinit('')` get `true`.
          if (val != null && isFinite(val) && val !== '') {
              return false;
          }
          else if (isString(val) && val !== '-') {
              return true;
          }
      }
  
      return false;
  }