| 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 a MATLAB structure containing the grid coordinates and wavenumber matrices for use in k-space simulations and reconstructions. Note, the grid structures are indexed as: (x) in 1D; (z, x) in 2D; (z, x, y) in 3D.
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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 |
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] |
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plaid ND grid of the x coordinate centered about 0 [m] |
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plaid ND grid of the x coordinate beginning at 0 [m] |
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length of grid dimension [m] |
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plaid ND grid of the wavenumber components centered about 0 |
For example, running kgrid = makeGrid(128, 0.1, 128, 0.1) at the command line will return:
kgrid =
Nz: 128
dz: 0.1000
Nx: 128
dx: 0.1000
x_size: 12.8000
z_size: 12.8000
z: [128x128 double]
x: [128x128 double]
z_off: [128x128 double]
x_off: [128x128 double]
kz: [128x128 double]
kx: [128x128 double]
k: [128x128 double]
cart2grid, interpCartData, kspaceFirstOrder1D, kspaceFirstOrder2D, kspaceFirstOrder3D, ndgrid, makeTime, smooth
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makeDisc | makeSphere | ![]() |
© 2009 Bradley Treeby and Ben Cox.