API Reference > geometry-core > CartesianGeometry > Range3d > isNull isNull MethodStatic Test if data has high<low for any of x,y,z, condition. Note that a range around a single point is NOT null. isNull(data: Readonly<WritableLowAndHighXYZ>): boolean Parameter Type Description data Readonly<WritableLowAndHighXYZ> Returns - boolean Defined in geometry3d/Range.ts Line 398 Last Updated: 12 June, 2024