/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2vtkoutputdata.m is in octave-fpl 1.3.4-2.
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 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 | ## Copyright (C) 2008 Carlo de Falco
##
## This program 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 3 of the License, or
## (at your option) any later version.
##
## This program 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 this program; if not, write to the Free Software
## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
## -*- texinfo -*-
## @deftypefn {Function File} {} FPL2vtkoutputdata ( @var{filename}, @var{p}, @var{t}, @var{nodedata}, @var{celldata}, @var{header}, @var{vtkver})
##
## Save data in VTK ASCII format.
##
## @itemize @minus
## @item @var{filename} = name of file to save into
## @item @var{p}, @var{t} = mesh node coordinates and connectivity
## @item @var{name} = name of a mesh variable
## @item @var{nodedata}/@var{celldata} = node/cell centered data
## fields (2xNfields cell array), @var{*data}@{:,1@} = variable names;
## @var{*data}@{:,2@} = variable data;
## @item @var{header} comment to add in the file header
## @item @var{vtkver} format version (default is 3.0)
## @end itemize
##
## @seealso{FPL2dxoutputdata}
## @end deftypefn
function FPL2vtkoutputdata (filename, p, t, nodedata, celldata, header, vtkver)
fid = fopen (filename, "w");
if ( fid )
## version ID
if (!exist("vtkver"))
vtkver = [3 0];
endif
fprintf (fid, "# vtk DataFile Version %d.%d\n", vtkver(1), vtkver(2));
## header
if (!exist("header"))
header = "";
elseif (length(header) > 255)
header (255:end) = [];
endif
fprintf (fid, "%s\n", header);
## File format: only ASCII supported for the moment
fprintf (fid, "ASCII\n");
## Mesh: only triangles suported
fprintf (fid, "DATASET UNSTRUCTURED_GRID\n");
Nnodes = columns(p);
fprintf (fid,"POINTS %d double\n", Nnodes);
fprintf (fid,"%g %g 0\n", p);
Nelem = columns(t);
T = zeros(4,Nelem);
T(1,:)= 3;
T(2:4,:) = t(1:3,:) -1;
fprintf (fid,"CELLS %d %d\n", Nelem, Nelem*4);
fprintf (fid,"%d %d %d %d\n", T);
fprintf (fid,"CELL_TYPES %d \n", Nelem);
fprintf (fid,"%d\n", 5*ones(Nelem,1));
## node data
if (exist("nodedata"))
nfields = rows(nodedata);
if nfields
fprintf (fid,"POINT_DATA %d\n", Nnodes);
for ifield = 1:nfields
V = nodedata {ifield, 2};
N = nodedata {ifield, 1};
if (isvector (V))
fprintf (fid,"SCALARS %s double\nLOOKUP_TABLE default\n", N);
fprintf (fid,"%g\n", V);
else
V(:,3) = 0;
fprintf (fid,"VECTORS %s double\nLOOKUP_TABLE default\n", N);
fprintf (fid,"%g %g %g\n", V);
endif
endfor
endif
endif
## cell data
if (exist("celldata"))
nfields = rows(celldata);
if nfields
fprintf (fid,"CELL_DATA %d\n", Nelem);
for ifield = 1:nfields
V = celldata {ifield, 2};
N = celldata {ifield, 1};
if (isvector (V))
fprintf (fid,"SCALARS %s double\nLOOKUP_TABLE default\n", N);
fprintf (fid,"%g\n", V);
else
V(:,3) = 0;
fprintf (fid,"VECTORS %s double\nLOOKUP_TABLE default\n", N);
fprintf (fid,"%g %g %g\n", V);
endif
endfor
endif
endif
## cleanup
fclose (fid);
else
error(["FPL2vtkoutputdata: could not open file " filename]);
endif
endfunction
%!test
%! msh.p =[ 0 0 0 0 1 1 1 1 2 2 2 2 3 3 3 3
%! 0 1 2 3 0 1 2 3 0 1 2 3 0 1 2 3];
%! msh.e =[1 5 9 13 14 15 4 8 12 1 2 3
%! 5 9 13 14 15 16 8 12 16 2 3 4
%! 0 0 0 0 0 0 0 0 0 0 0 0
%! 0 0 0 0 0 0 0 0 0 0 0 0
%! 1 1 1 2 2 2 3 3 3 4 4 4
%! 0 0 0 0 0 0 0 0 0 0 0 0
%! 1 1 1 1 1 1 1 1 1 1 1 1];
%! msh.t =[ 1 2 3 5 6 7 9 10 11 1 2 3 5 6 7 9 10 11
%! 5 6 7 9 10 11 13 14 15 6 7 8 10 11 12 14 15 16
%! 6 7 8 10 11 12 14 15 16 2 3 4 6 7 8 10 11 12
%! 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1];
%! testfile = "# vtk DataFile Version 3.0\n\nASCII\nDATASET UNSTRUCTURED_GRID\nPOINTS 16 double\n0 0 0\n0 1 0\n0 2 0\n0 3 0\n1 0 0\n1 1 0\n1 2 0\n1 3 0\n2 0 0\n2 1 0\n2 2 0\n2 3 0\n3 0 0\n3 1 0\n3 2 0\n3 3 0\nCELLS 18 72\n3 0 4 5\n3 1 5 6\n3 2 6 7\n3 4 8 9\n3 5 9 10\n3 6 10 11\n3 8 12 13\n3 9 13 14\n3 10 14 15\n3 0 5 1\n3 1 6 2\n3 2 7 3\n3 4 9 5\n3 5 10 6\n3 6 11 7\n3 8 13 9\n3 9 14 10\n3 10 15 11\nCELL_TYPES 18 \n5\n5\n5\n5\n5\n5\n5\n5\n5\n5\n5\n5\n5\n5\n5\n5\n5\n5\nPOINT_DATA 16\nSCALARS u double\nLOOKUP_TABLE default\n0\n0\n0\n0\n1\n1\n1\n1\n2\n2\n2\n2\n3\n3\n3\n3\n";
%! FPL2vtkoutputdata ("__FPL2vtkoutputdata__test__.vtk", msh.p, msh.t, {"u", msh.p(1,:).'});
%! fid = fopen("__FPL2vtkoutputdata__test__.vtk","r");
%! s = fread(fid);
%! fclose(fid);
%! assert (char(s'), testfile);
%! delete __FPL2vtkoutputdata__test__.vtk
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