k-Wave Toolbox |
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Create k-space grid structure
kgrid = makeGrid(Nx, dx) kgrid = makeGrid(Nx, dx, Nz, dz) kgrid = makeGrid(Nx, dx, Ny, dy, Nz, dz)
makeGrid
creates an object of the kWaveGrid
class containing the grid coordinates and wavenumber matrices used in k-Wave simulations. The grid structures are indexed as: (x) in 1D; (z, x) in 2D; (z, x, y) in 3D.
Note For older versions of MATLAB in which custom class definitions are not supported, |
|
number of pixels in each Cartesian direction |
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pixel size in each Cartesian direction [m] |
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k-space grid structure used by the simulation and reconstructions functions within k-Wave |
The structure kgrid
has the following fields:
Fieldname | Description |
---|---|
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ND grid of the scalar wavenumber |
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maximum spatial frequency supported by the grid |
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evenly spaced array of time values [s] (set to 'auto' by |
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number of spatial dimensions |
And for each spatial dimension x, y, z:
Fieldname | Description |
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number of pixels |
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size of an individual pixel [m] |
|
plaid ND grid of the x coordinate centered about 0 [m] |
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1D vector of the x coordinate [m] |
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length of grid dimension [m] |
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plaid ND grid of the wavenumber components centered about 0 |
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maximum spatial frequency supported by the grid in the x direction |
For example, running kgrid = makeGrid(128, 0.1, 128, 0.1)
at the command line will return:
kgrid = kWaveGrid Properties: Nx: 128 Ny: 0 Nz: 128 dx: 0.1000 dy: 0 dz: 0.1000 kx: [128x128 double] ky: 0 kz: [128x128 double] k: [128x128 double] kx_max: 31.4159 ky_max: 0 kz_max: 31.4159 k_max: 31.4159 t_array: 'auto' dim: 2 x: [128x128 double] y: 0 z: [128x128 double] x_vec: [1x128 double] y_vec: 0 z_vec: [1x128 double] x_size: 12.8000 z_size: 12.8000 y_size: 0
cart2grid
, interpCartData
, kspaceFirstOrder1D
, kspaceFirstOrder2D
, kspaceFirstOrder3D
, ndgrid
, makeTime
, smooth
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makeDisc | makeSphere | ![]() |
© 2009, 2010, 2011 Bradley Treeby and Ben Cox.