[Home](./index.md) > [@cearth/tools](./tools.md) > [Xyz\_Hpr](./tools.xyz_hpr.md) > [toHeadingPitchRoll](./tools.xyz_hpr.toheadingpitchroll.md) ## Xyz\_Hpr.toHeadingPitchRoll() function **Signature:** ```typescript function toHeadingPitchRoll(xyz: { x: number; y: number; z: number; }): HeadingPitchRoll; ``` ## Parameters

Parameter	Type	Description
xyz	{ x: number; y: number; z: number; }

**Returns:** HeadingPitchRoll