http://www.k-wave.org/forum/topic/the-optional-input-savetodisk-is-currently-only-compatible-with-forward-simula Support for the k-Wave MATLAB toolbox en-US Tue, 12 May 2026 22:29:12 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/the-optional-input-savetodisk-is-currently-only-compatible-with-forward-simula#post-8955 Fri, 24 Nov 2023 17:31:02 +0000 Bradley Treeby 8955@http://www.k-wave.org/forum/ <p>As the error message suggests, you can't run the C++ code with a Cartesian sensor mask. You have to use a binary sensor mask. You could also use a sensor mask created using <code>kWaveArray</code> if you don't want to discretise your sensor points to the grid. </p> http://www.k-wave.org/forum/topic/the-optional-input-savetodisk-is-currently-only-compatible-with-forward-simula#post-8937 Mon, 06 Nov 2023 06:48:59 +0000 AoTsing 8937@http://www.k-wave.org/forum/ <p>hello，I have difine a 512*512*512 kgird and my initial pressure distribution(get from MCmatlab,also 512*512*512 grids) ,then I define a CartBowl senser by makeCartBowl,but when I run the program finally with kspaceFirstOrder3DG,I get a error:"The optional input 'SaveToDisk' is currently only compatible with forward simulations using a non-zero binary sensor mask."</p> <p>my total code following:<br /> clc; clear all; close;<br /> Nx = 512; % number of grid points in the x (row) direction<br /> Ny = 512; % number of grid points in the y (column) direction<br /> Nz = 512; % number of grid points in the x (row) direction</p> <p>x = 4e-2; % [m]<br /> dx = x/Nx; % grid point spacing in the x direction [m]<br /> dy = dx; % grid point spacing in the y direction [m]<br /> dz = dx; % grid point spacing in the y direction [m]</p> <p>kgrid = makeGrid(Nx, dx, Ny, dy, Nz, dz);<br /> load("P0.mat");<br /> source.p0 = p0;</p> <p>medium.sound_speed = 1500*ones(Nx, Ny,Nz); % [m/s]<br /> medium.density = 1040; % [kg/m^3]</p> <p>% define sensor<br /> bowl_pos = [-1.5e-2, 0e-2, 0e-2];<br /> radius = Inf;<br /> diameter = 4e-2;<br /> focus_pos = [0e-2,0e-2,0e-2];<br /> num_points= 256;<br /> sensor.mask = makeCartBowl(bowl_pos, radius, diameter, focus_pos, num_points);</p> <p>sensor_data = kspaceFirstOrder3DG(kgrid, medium, source, sensor); </p>