http://www.k-wave.org/forum/topic/unrecognized-function-castzeros-in-kspacefirstorder_createstoragevariablesm Support for the k-Wave MATLAB toolbox en-US Tue, 12 May 2026 23:28:16 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/unrecognized-function-castzeros-in-kspacefirstorder_createstoragevariablesm#post-9141 Sun, 08 Sep 2024 17:59:16 +0000 bob2024 9141@http://www.k-wave.org/forum/ <p>Sorry, my bad. The function is actually defined in kspaceFirstOrder_inputChecking.m</p> <p><code></code><br /> switch data_cast<br /> case 'off'<br /> castZeros = @(sz) zeros(sz);<br /> precision = 'double';<br /> case 'single'<br /> castZeros = @(sz) zeros(sz, 'single');<br /> precision = 'single';<br /> case 'gsingle'<br /> castZeros = @(sz) gzeros(sz, 'single');<br /> precision = 'single';<br /> case 'gdouble'<br /> castZeros = @(sz) gzeros(sz, 'double');<br /> precision = 'double';<br /> case 'gpuArray'<br /> if strcmp(data_cast_prepend, 'single')<br /> if verLessThan('distcomp', '6.2')</p> <p> % original syntax to initialise array of zeros<br /> castZeros = @(sz) parallel.gpu.GPUArray.zeros(sz, 'single');</p> <p> else</p> <p> % current syntax to initialise array of zeros<br /> castZeros = @(sz) gpuArray.zeros(sz, 'single');</p> <p> end<br /> precision = 'single';<br /> else<br /> if verLessThan('distcomp', '6.2')</p> <p> % original syntax to initialise array of zeros<br /> castZeros = @(sz) parallel.gpu.GPUArray.zeros(sz, 'double');</p> <p> else</p> <p> % current syntax to initialise array of zeros<br /> castZeros = @(sz) gpuArray.zeros(sz, 'double');</p> <p> end<br /> precision = 'double';<br /> end<br /> case 'kWaveGPUsingle'<br /> castZeros = @(sz) zeros(sz, GPUsingle);<br /> precision = 'single';<br /> case 'kWaveGPUdouble'<br /> castZeros = @(sz) zeros(sz, GPUdouble);<br /> precision = 'double';<br /> otherwise<br /> error('Unknown ''DataCast'' option');<br /> end<br /> <code></code> </p> http://www.k-wave.org/forum/topic/unrecognized-function-castzeros-in-kspacefirstorder_createstoragevariablesm#post-9140 Sun, 08 Sep 2024 17:49:48 +0000 bob2024 9140@http://www.k-wave.org/forum/ <p>What does this castZeros() function mean here? There is no such function in MATLAB.<br /> If you call it you will get error: Unrecognized function or variable 'castZeros'.</p> <p><code></code>`<br /> % create storage and scaling variables - all variables are saved as<br /> % fields of a structure called sensor_data</p> <p> % if only p is being stored (i.e., if no user input is given for<br /> % sensor.record), then sensor_data.p is copied to sensor_data at the<br /> % end of the simulation </p> <p> % time history of the acoustic pressure<br /> if flags.record_p || flags.record_I || flags.record_I_avg<br /> sensor_data.p = castZeros([num_sensor_points, num_recorded_time_points]);<br /> end</p> <p> % maximum pressure<br /> if flags.record_p_max<br /> sensor_data.p_max = castZeros([num_sensor_points, 1]);<br /> end</p> <p> ......<br /> <code></code>` </p>