openEMS/matlab/GetField_Range.m

63 lines
1.8 KiB
Matlab

function [field_i mesh_i] = GetField_Range(field, mesh, range)
% [field_i mesh_i] = GetField_Range(field, mesh, range)
%
% Get a field dump subset within a given mesh range
%
% example:
% % specify a mesh range
% range{1} = [0 150] * 1e-3; % x in range 0..150mm
% range{2} = [0]; % only one line close to y==0
% range{3} = []; % no range restriction
%
% % read hdf data
% [field mesh] = ReadHDF5Dump('Et.h5');
% % extract a ranged subset
% [field_i mesh_i] = GetField_Range(field, mesh, range);
%
% %or both steps in one with the same result:
% [field_i mesh_i] = ReadHDF5Dump('Et.h5','Range', range);
%
% openEMS matlab interface
% -----------------------
% author: Thorsten Liebig
%
% See also ReadHDF5Dump ReadHDF5FieldData ReadHDF5Mesh
mesh_i = mesh;
for n=1:3
if (numel(range{n})==0)
ind_range{n} = [];
ind_range{n} = 1:numel( mesh.lines{n});
elseif (numel(range{n})==1)
ind_range{n} = find( mesh.lines{n}>=range{n}(1) , 1);
if (isempty(ind_range{n}))
ind_range{n} = find( mesh.lines{n}>=range{n}(1) , 1, 'first');
end
if (isempty(ind_range{n}))
ind_range{n} = find( mesh.lines{n}<=range{n}(2) , 1, 'last');
end
else
ind_range{n} = find( mesh.lines{n}>=range{n}(1) & mesh.lines{n}<=range{n}(2));
end
mesh_i.lines{n} = mesh.lines{n}(ind_range{n});
end
field_i = field;
if (isfield(field,'FD'))
for n=1:numel(field.FD.values)
field_i.FD.values{n} = field.FD.values{n}(ind_range{1},ind_range{2},ind_range{3},:);
end
end
if (isfield(field,'TD'))
for n=1:numel(field.TD.values)
field_i.TD.values{n} = field.TD.values{n}(ind_range{1},ind_range{2},ind_range{3},:);
end
end