<div id="comment:0"></div> #28743 and #28766 implemented the incidence matrix for lattice polytopes and cones. We use the incidence matrix to - accept a cone as input of `CombinatorialPolyhedron`, - process a lattice polytope as input more easily. In both cases the `CombinatorialPolyhedron` can be obtained without previously calculating the face lattice (avoiding the method `facets`). CC: @jplab @LaisRast Component: **geometry** Keywords: **combinatorial polyhedron, cone, lattice polytope** Author: **Jonathan Kliem** Branch/Commit: **[`d513adc`](https://github.com/sagemath/sagetrac-mirror/commit/d513adc57450e0f4bb45574019df9ae77cd3eb62)** Reviewer: **Laith Rastanawi** _Issue created by migration from https://trac.sagemath.org/ticket/28960_