85 lines
2.8 KiB
Matlab
85 lines
2.8 KiB
Matlab
function [field_i mesh_i] = GetField_Interpolation(field, mesh, numLines, varargin)
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% [field_i mesh_i] = GetField_Interpolation(field, mesh, numLines, varargin)
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%
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% example:
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% [field mesh] = ReadHDF5Dump('Et.h5');
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% %interpolate on a mesh with 21x21x101 lines
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% [field_i mesh_i] = GetField_Interpolation(field, mesh, [21 21 101]);
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%
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% %or both steps in one with the same result:
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% [field_i mesh_i] = ReadHDF5Dump('Et.h5','Interpolation', [21 21 101]);
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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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%
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% See also ReadHDF5Dump ReadHDF5FieldData ReadHDF5Mesh
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if (~isnumeric(numLines) || numel(numLines)~=3)
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error('openEMS:GetField_Interpolation: numLines for interpolation must be a vector...');
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end
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x = mesh.lines{1};
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y = mesh.lines{2};
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z = mesh.lines{3};
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x_i = linspace(x(1),x(end),numLines(1));
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y_i = linspace(y(1),y(end),numLines(2));
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z_i = linspace(z(1),z(end),numLines(3));
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field_i = field;
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mesh_i = mesh;
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mesh_i.lines{1} = x_i;
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mesh_i.lines{2} = y_i;
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mesh_i.lines{3} = z_i;
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NULL = zeros(numel(x_i),numel(y_i),numel(z_i),3);
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for n=1:numel(field.values)
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field_i.values{n} = NULL;
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end
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clear NULL;
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% matlab cannot handle 3D data to be 2D data, workaround for these cases
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if (numel(x)==1)
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[Y Z] = ndgrid(y,z);
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[Y_I Z_I] = ndgrid(y_i,z_i);
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for n=1:numel(field.values)
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field_i.values{n}(1,:,:,1) = interpn(Y,Z,squeeze(field.values{n}(1,:,:,1)),Y_I,Z_I);
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field_i.values{n}(1,:,:,2) = interpn(Y,Z,squeeze(field.values{n}(1,:,:,2)),Y_I,Z_I);
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field_i.values{n}(1,:,:,3) = interpn(Y,Z,squeeze(field.values{n}(1,:,:,3)),Y_I,Z_I);
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end
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return;
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end
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if (numel(y)==1)
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[X Z] = ndgrid(x,z);
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[X_I Z_I] = ndgrid(x_i,z_i);
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for n=1:numel(field.values)
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field_i.values{n}(:,1,:,1) = interpn(X,Z,squeeze(field.values{n}(:,1,:,1)),X_I,Z_I);
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field_i.values{n}(:,1,:,2) = interpn(X,Z,squeeze(field.values{n}(:,1,:,2)),X_I,Z_I);
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field_i.values{n}(:,1,:,3) = interpn(X,Z,squeeze(field.values{n}(:,1,:,3)),X_I,Z_I);
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end
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return;
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end
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if (numel(z)==1)
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[X Y] = ndgrid(x,y);
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[X_I Y_I] = ndgrid(x_i,y_i);
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for n=1:numel(field.values)
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field_i.values{n}(:,:,1,1) = interpn(X,Y,squeeze(field.values{n}(:,:,1,1)),X_I,Y_I);
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field_i.values{n}(:,:,1,2) = interpn(X,Y,squeeze(field.values{n}(:,:,1,2)),X_I,Y_I);
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field_i.values{n}(:,:,1,3) = interpn(X,Y,squeeze(field.values{n}(:,:,1,3)),X_I,Y_I);
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end
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return;
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end
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%real 3D case
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[X Y Z] = ndgrid(x,y,z);
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[X_I Y_I Z_I] = ndgrid(x_i,y_i,z_i);
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for n=1:numel(field.values)
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field_i.values{n}(:,:,:,1) = interpn(X,Y,Z,field.values{n}(:,:,:,1),X_I,Y_I,Z_I);
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field_i.values{n}(:,:,:,2) = interpn(X,Y,Z,field.values{n}(:,:,:,2),X_I,Y_I,Z_I);
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field_i.values{n}(:,:,:,3) = interpn(X,Y,Z,field.values{n}(:,:,:,3),X_I,Y_I,Z_I);
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end
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