function [Transf] = setupSpace(~,Params)
    Transf.Xmax = 0.5*Params.Lx;
    Transf.Ymax = 0.5*Params.Ly;
    Transf.Zmax = 0.5*Params.Lz;
    
    Nz = Params.Nz; Nx = Params.Nx; Ny = Params.Ny;
    
    % Fourier grids
    x = linspace(-0.5*Params.Lx,0.5*Params.Lx-Params.Lx/Params.Nx,Params.Nx);
    Kmax = pi*Params.Nx/Params.Lx;
    kx = linspace(-Kmax,Kmax,Nx+1);
    kx = kx(1:end-1); dkx = kx(2)-kx(1);
    kx = fftshift(kx);
    
    y = linspace(-0.5*Params.Ly,0.5*Params.Ly-Params.Ly/Params.Ny,Params.Ny);
    Kmax = pi*Params.Ny/Params.Ly;
    ky = linspace(-Kmax,Kmax,Ny+1);
    ky = ky(1:end-1); dky = ky(2)-ky(1);
    ky = fftshift(ky);
    
    z = linspace(-0.5*Params.Lz,0.5*Params.Lz-Params.Lz/Params.Nz,Params.Nz);
    Kmax = pi*Params.Nz/Params.Lz;
    kz = linspace(-Kmax,Kmax,Nz+1);
    kz = kz(1:end-1); dkz = kz(2)-kz(1);
    kz = fftshift(kz);
    
    [Transf.X,Transf.Y,Transf.Z]=ndgrid(x,y,z);
    [Transf.KX,Transf.KY,Transf.KZ]=ndgrid(kx,ky,kz);
    Transf.x = x; Transf.y = y; Transf.z = z;
    Transf.kx = kx; Transf.ky = ky; Transf.kz = kz;
    Transf.dx = x(2)-x(1); Transf.dy = y(2)-y(1); Transf.dz = z(2)-z(1);
    Transf.dkx = dkx; Transf.dky = dky; Transf.dkz = dkz;
end