Homec4science
Diffusion GYACOMO (OBSOLETE: LATEST VERSION ON gitlab.epfl.ch) (shear_version) Browse

gyacomo/matlab/compute/rotate_c_plane_nxnky_to_nkxny.m
5e48668823b5shear_version

Last Change
Raw File

rotate_c_plane_nxnky_to_nkxny.m
View Options

function [ data ] = rotate_c_plane_nxnky_to_nkxny( data )
%to go from nx nky Gene representation to nkx ny HeLaZ one
kx_full = data.kx;
ky_full = [data.ky; -data.ky(end-1:-1:2)];
dens = data.DENS_I; temp = data.TEMP_I; phi = data.PHI;
dims = size(dens); nz = dims(3); nt = dims(4);
nkx = numel(data.kx);
nky = numel(data.ky);
nx = nkx;
ny = 2*numel(data.ky)-1;
%note, we need one extra point which we set to zero for the ifft
dens_full = zeros(nx,ny,nz,nt);
dens_full(:,1:nky,:,:) = dens(:,:,:,:);
dens_full(1,(nky+1):(ny),:,:) = conj(dens(1,nky:-1:2,:,:));
dens_full(2:nx,(nky+1):(ny),:,:) = conj(dens(nx:-1:2,nky:-1:2,:,:));
dens_full = cat(2,dens(1:data.Nkx,:,:,:),conj(dens(1:data.Nkx,end-1:-1:2,:,:)));
temp_full = zeros(nx,ny,nz,nt);
temp_full(:,1:nky,:,:) = temp(:,:,:,:);
temp_full(1,(nky+1):(ny),:,:) = conj(temp(1,nky:-1:2,:,:));
temp_full(2:nx,(nky+1):(ny),:,:) = conj(temp(nx:-1:2,nky:-1:2,:,:));
temp_full = cat(2,temp(1:data.Nkx,:,:,:),conj(temp(1:data.Nkx,end-1:-1:2,:,:)));
phi_full = zeros(nx,ny,nz,nt);
phi_full(:,1:nky,:,:) = phi(:,:,:,:);
phi_full(1,(nky+1):(ny),:,:) = conj(phi(1,nky:-1:2,:,:));
phi_full(2:nx,(nky+1):(ny),:,:) = conj(phi(nx:-1:2,nky:-1:2,:,:));
phi_full = cat(2, phi(1:data.Nkx,:,:,:),conj( phi(1:data.Nkx,end-1:-1:2,:,:)));
data.DENS_I = dens_full(1:data.Nkx/2+1,:,:,:);
data.TEMP_I = temp_full(1:data.Nkx/2+1,:,:,:);
data.PHI = phi_full (1:data.Nkx/2+1,:,:,:);
data.kx = kx_full(1:data.Nkx/2+1);
data.ky = ky_full;
data.Nkx = numel(data.kx);
data.Nky = numel(data.ky);
data.Nx = nx+1;
data.Ny = ny-1;
dkx = data.kx(2); dky = data.ky(2);
Lx = 2*pi/dkx; Ly = 2*pi/dky;
x = linspace(-Lx/2,Lx/2,data.Nx+1); x = x(1:end-1);
y = linspace(-Ly/2,Ly/2,data.Ny+1); y = y(1:end-1);
data.x = x; data.y = y; data.Lx = Lx; data.Ly = Ly;
end
c4science · Help