diff --git a/doc/FAQ b/doc/FAQ index 676dcae80c6491c079197a63d6e557d37eeabf12..bf5589d977ab7a0b44644e22493508ce4872e546 100644 --- a/doc/FAQ +++ b/doc/FAQ @@ -1,4 +1,4 @@ -$Id: FAQ,v 1.61 2005-05-13 05:09:08 geuzaine Exp $ +$Id: FAQ,v 1.62 2005-06-04 03:28:31 geuzaine Exp $ This is the Gmsh FAQ @@ -283,6 +283,17 @@ fields. There is also one additional clipping plane available for "cutting" only the mesh (by keeping entire elements), in 'Tools->Options->Mesh->Cut Plane'. +* 5.14 What is the signification of rho, eta and gamma metrics in +Tools->Statistics? + +They measure the quality of the tetrahedra in a mesh: + +rho ~ min_edge_length / max_edge_length +eta ~ volume^(2/3) / sum_edge_length2 +gamma ~ volume / sum_face_area / max_edge_length + +For the exact definitions, look at Mesh/Simplex.cpp. + ******************************************************************** Section 6: Solver module