69 lines
1.6 KiB
Matlab
69 lines
1.6 KiB
Matlab
function DumpFF2VTK(filename, farfield, thetaRange, phiRange, scale)
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% DumpFF2VTK(filename, farfield, thetaRange, phiRange, scale)
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%
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% Dump 3D far field pattern to a vtk file
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%
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% example:
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% see examples/NF2FF/infDipol.m
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%
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% See also CreateNF2FFBox, AnalyzeNF2FF
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%
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% openEMS matlab interface
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% -----------------------
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% author: Thorsten Liebig
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if (nargin<5)
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scale = 1;
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end
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t = thetaRange*pi/180;
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a = phiRange*pi/180;
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fid = fopen(filename,'w+');
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% set nan values to zero
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ind = find(isnan(farfield));
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if (~isempty(ind))
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warning('openEMS:Dump2VTK','field contains nan, setting to zero');
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farfield(ind)=0;
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end
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% set inf values to zero
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ind = find(isinf(farfield));
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if (~isempty(ind))
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warning('openEMS:Dump2VTK','field contains inf, setting to zero');
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farfield(ind)=0;
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end
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fprintf(fid,'# vtk DataFile Version 3.0\n');
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fprintf(fid,'Structured Grid by matlab-interface of openEMS\n');
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fprintf(fid,'ASCII\n');
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fprintf(fid,'DATASET STRUCTURED_GRID\n');
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fprintf(fid,'DIMENSIONS %d %d %d\n',1,numel(t),numel(a));
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fprintf(fid,'POINTS %d double\n',numel(t)*numel(a));
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for na=1:numel(phiRange)
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for nt=1:numel(thetaRange)
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fprintf(fid,'%e %e %e\n',...
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scale*farfield(nt,na)*sin(t(nt))*cos(a(na)),...
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scale*farfield(nt,na)*sin(t(nt))*sin(a(na)),...
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scale*farfield(nt,na)*cos(t(nt)));
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end
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end
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fprintf(fid,'\n\n');
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fprintf(fid,'POINT_DATA %d\n',numel(t)*numel(a));
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fprintf(fid,['SCALARS gain double 1\nLOOKUP_TABLE default\n']);
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fclose(fid);
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dumpField = farfield(:);
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save('-ascii','-append',filename,'dumpField')
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