API Reference > imodeljs-frontend > Views > Viewport > isSubCategoryVisible isSubCategoryVisible Method Determine whether geometry belonging to a specific SubCategory is visible in this viewport, assuming the containing Category is displayed. isSubCategoryVisible(id: Id64String): boolean note Because this function does not know the Id of the containing Category, it does not check if the Category is enabled for display. The caller should check that separately if he knows the Id of the Category. Parameter Type Description id Id64String The Id of the subcategory Returns - boolean true if the subcategory is visible in this viewport. Defined in core/frontend/src/Viewport.ts Line 893 Last Updated: 13 June, 2024