--- /dev/null
+function UDXoutput2Ddata(filename,p,t,u,attr_name,attr_rank,attr_shape,endfile)
+
+##
+## UDXoutput2Ddata(filename,p,t,u,attr_name,attr_rank,attr_shape,endfile)
+##
+## Outputs data in DX form.
+## Only one variable can be written to the file
+## variable must be a scalar, vector or tensor of doubles
+##
+## x
+## attr_name = name of the variable (type string)
+## attr_rank = rank of variable data (0 for scalar, 1 for vector, etc.)
+## attr_shape = number of components of variable data (assumed 1 for scalar)
+##
+
+
+% This file is part of
+%
+% SECS2D - A 2-D Drift--Diffusion Semiconductor Device Simulator
+% -------------------------------------------------------------------
+% Copyright (C) 2004-2006 Carlo de Falco
+%
+%
+%
+% SECS2D 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.
+%
+% SECS2D 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 SECS2D; If not, see <http://www.gnu.org/licenses/>.
+
+
+
+
+ p = p';
+ t = t';
+ t = t(:,1:3);
+
+ %eval(['!rm -f ',filename]);
+
+ fid=fopen (filename,'w');
+ Nnodi = size(p,1);
+ Ntriangoli = size(t,1);
+ Ndati = size(u,1);
+
+ fprintf(fid,'object "pos"\nclass array type float rank 1 shape 2 items %d data follows',Nnodi);
+
+ for i=1:Nnodi
+ fprintf(fid,'\n');
+ fprintf(fid,' %1.7e',p(i,:));
+ end
+
+ if (min(min(t))==1)
+ t=t-1;
+ elseif(min(min(t))~=0)
+ disp('WARNING: check triangle structure')
+ end
+ # In DX format nodes are
+ # numbered starting from zero,
+ # instead we want to number
+ # them starting from 1!
+ # Here we restore the DX
+ # format
+
+ fprintf(fid,'\n\nobject "con"\nclass array type int rank 1 shape 3 items %d data follows',Ntriangoli);
+ for i=1:Ntriangoli
+ fprintf(fid,'\n');
+ fprintf(fid,' %d',t(i,:));
+ end
+
+ fprintf(fid,'\nattribute "element type" string "triangles"\nattribute "ref" string "positions"\n\n');
+
+ if ((attr_rank==0) & (min(size(u))==1))
+ fprintf(fid,'object "%s.data"\nclass array type double rank 0 items %d data follows',attr_name,Ndati);
+ fprintf(fid,'\n %1.7e',u);
+
+ else
+ fprintf(fid,'object "%s.data"\nclass array type double rank %d shape %d items %d data follows', ...
+ attr_name,attr_rank,attr_shape,Ndati);
+ for i=1:Ndati
+ fprintf(fid,'\n');
+ fprintf(fid,' %1.7e',u(i,:));
+ end
+
+end
+
+if Ndati==Nnodi
+ fprintf(fid,['\nattribute "dep" string "positions"\n\n' ...
+ 'object "%s" class field\n'...
+ 'component "positions" value "pos"\n'...
+ 'component "connections" value "con"\n'...
+ 'component "data" value "%s.data"\n'],...
+ attr_name,attr_name);
+ elseif Ndati==Ntriangoli
+ fprintf(fid,['\nattribute "dep" string "connections"\n\n' ...
+ 'object "%s" class field\n'...
+ 'component "positions" value "pos"\n'...
+ 'component "connections" value "con"\n'...
+ 'component "data" value "%s.data"\n'],...
+ attr_name,attr_name);
+end
+
+ if(endfile)
+ fprintf(fid,'\nend\n');
+ end
+
+ fclose (fid);
+
+