text: define(function (require) {
  
      var zrUtil = require('zrender/core/util');
      var Axis = require('../Axis');
  
      function IndicatorAxis(dim, scale, radiusExtent) {
          Axis.call(this, dim, scale, radiusExtent);
  
          /**
           * Axis type
           *  - 'category'
           *  - 'value'
           *  - 'time'
           *  - 'log'
           * @type {string}
           */
          this.type = 'value';
  
          this.angle = 0;
  
          /**
           * Indicator name
           * @type {string}
           */
          this.name = '';
          /**
           * @type {module:echarts/model/Model}
           */
          this.model;
      }
  
      zrUtil.inherits(IndicatorAxis, Axis);
  
      return IndicatorAxis;
  });