http://www.k-wave.org/forum/topic/3d-sphere-sensor-and-the-sensor_data Support for the k-Wave MATLAB toolbox en-US Wed, 13 May 2026 08:18:21 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/3d-sphere-sensor-and-the-sensor_data#post-5208 Fri, 21 Aug 2015 10:24:34 +0000 Bradley Treeby 5208@http://www.k-wave.org/forum/ <p>Hi Stang,</p> <p>The sensor data is ordered using MATLAB's standard column wise linear matrix ordering. There is some more information and an example in Section 3.4 of the k-Wave manual. You can use <code>find</code> to get the linear index of the sensor positions, e.g., </p> <p> <code>linear_ind = find(sensor.mask == 1);</code></p> <p>and <code>ind2sub</code> to convert these the grid indices if needed, e.g., </p> <p> <code>[x_ind, y_ind, z_ind] = ind2sub([Nx, Ny, Nz], linear_ind);</code></p> <p>If you want to re-order the data, you could also look at the function <code>reorderSensorData</code> (which only works for 2D), and try to replicate this for 3D.</p> <p>Hope that helps,</p> <p>Brad. </p> http://www.k-wave.org/forum/topic/3d-sphere-sensor-and-the-sensor_data#post-5207 Thu, 20 Aug 2015 23:33:55 +0000 stang 5207@http://www.k-wave.org/forum/ <p>Hi,<br /> I defined a 3D sphere sensor. Total 4333 sensors are distributed in a 3D sphere. After I run the simulation, all sensors' data is stored in the 2D 'sensor_data' matrix (4333*N).<br /> It seems each sensor has a row to store the pressure data. But how can I know each sensor's position? I have to do the reconstruction so I have to know where in the sphere does the data recorded from. </p> <p>Thank you. </p>