getSecondaryCategories
getSecondaryCategories() function
Gets the secondary categories if #getUseSecondaryCategories/ #setUseSecondaryCategories(boolean) property is true. Read-only IChartCategoryCollection.
If #getUseSecondaryCategories/ #setUseSecondaryCategories(boolean) property is false then this ( #getSecondaryCategories) property return null and data in #getCategories property is used both for primary and secondary series. If #getUseSecondaryCategories/ #setUseSecondaryCategories(boolean) property is true then data in this #getSecondaryCategories property is used for secondary series and data in #getCategories property is used for primary series.