https://www.k-wave.org/forum/topic/incorrect-output-data-dimension-for-gaussianfilter-to-work Support for the k-Wave MATLAB toolbox en-US Sun, 13 Sep 2026 08:24:45 +0000 http://bbpress.org/?v=1.0.2 q https://www.k-wave.org/forum/search.php https://www.k-wave.org/forum/topic/incorrect-output-data-dimension-for-gaussianfilter-to-work#post-8261 Wed, 21 Jul 2021 16:51:06 +0000 Bradley Treeby 8261@https://www.k-wave.org/forum/ <p>Yes the data will be a 4D array if using cuboid corners. You could instead use a binary sensor mask (so the data will be returned as a 2D array so the call <code>gaussianFilter</code> inside <code>kspaceFirstOrder3DC</code> should work), or apply the filter it after the simulation as you have done. </p> https://www.k-wave.org/forum/topic/incorrect-output-data-dimension-for-gaussianfilter-to-work#post-8232 Thu, 08 Jul 2021 10:35:54 +0000 luni.jimmy 8232@https://www.k-wave.org/forum/ <p>Thanks for all the contributions!</p> <p>I was running <code>kspaceFirstOrder3DG</code> using a sensor mask defined by cuboid corners, and I defined the sensors' frequency response.</p> <p>Error message popped up when it ran into <code>gaussianFilter</code>, saying that there are "Too many input arguments".</p> <p>After some inspection, I found that in <code>kspaceFirstOrder3D</code>, <code>gaussianFilter</code> was applied to sensor data (where <code>sensor_data.p</code> is a 2-D matrix) before re-ordering, so everything was fine.<br /> However, in <code>kspaceFirstOrder3DG</code>, the sensor data read back from h5 file is already in 4-D format, such that <code>gaussianFilter</code> can not work properly.</p> <p>I think I can remove the sensors' frequency response for now and filter the signal after <code>kspaceFirstOrder3DG</code> finishes. Or is there any other alternative modifications that I can do?</p> <p>Thanks again!</p> <p>P.S. I have modified the <code>h5writeatt</code> part according to <a href="http://www.k-wave.org/forum/topic/error-reading-h5-files-when-using-binaries" rel="nofollow">http://www.k-wave.org/forum/topic/error-reading-h5-files-when-using-binaries</a>. </p>