/usr/share/octave/packages/bim-1.1.5/bim3c_mesh_properties.m is in octave-bim 1.1.5-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 | ## Copyright (C) 2006,2007,2008,2009,2010 Carlo de Falco, Massimiliano Culpo
##
## This file is part of:
## BIM - Diffusion Advection Reaction PDE Solver
##
## BIM is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 2 of the License, or
## (at your option) any later version.
##
## BIM is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with BIM; If not, see <http://www.gnu.org/licenses/>.
##
## author: Carlo de Falco <cdf _AT_ users.sourceforge.net>
## author: Massimiliano Culpo <culpo _AT_ users.sourceforge.net>
## -*- texinfo -*-
## @deftypefn {Function File} {[@var{omesh}]} = @
## bim3c_mesh_properties(@var{imesh})
##
## Compute the properties of @var{imesh} needed by BIM method and append
## them to @var{omesh} as fields.
##
## @seealso{bim3a_reaction, bim3a_rhs, bim3a_laplacian}
## @end deftypefn
function [omesh] = bim3c_mesh_properties (imesh)
## Check input
if nargin != 1
error("bim3c_mesh_properties: wrong number of input parameters.");
elseif (! isstruct (imesh) || any (! isfield (imesh, {"p", "e", "t"})))
error ("bim3c_mesh_properties: first input is not a valid mesh structure.");
endif
## Compute properties
omesh = imesh;
[omesh.wjacdet,omesh.area,omesh.shg,omesh.shp] = ...
msh3m_geometrical_properties (imesh, "wjacdet", "area", "shg", "shp");
endfunction
%!shared mesh
% x = y = z = linspace(0,1,4);
% mesh = msh3m_structured_mesh(x,y,z,1,1:6);
% mesh = bim3c_mesh_properties (mesh);
%!test
% tmp = msh3m_geometrical_properties (mesh, "wjacdet");
% assert(mesh.wjacdet,tmp);
%!test
% tmp = msh3m_geometrical_properties(mesh,"shg");
% assert(mesh.shg,tmp);
%!test
% tmp = msh3m_geometrical_properties(mesh,"shp");
% assert(mesh.shp,tmp);
%!test
% assert(mesh.area,sum(mesh.wjacdet,1));
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