title: how to save a modified 3D raw file?
body: <p>I am trying to read a raw file in Matlab (float64, which is a deformation vector field, i.e. result of image registration), with 3 dimensions 304 x 224 x 52.</p>
  
  <p>Then I want to change all the values within this file by dividing them by 10.</p>
  
  <p>After that I want to save the modified file again as a raw file with the same specifications. I wrote a code but I am not able to save the file. I want to save it again in raw format. I think I might be missing something. I am a beginner in Matlab so I would appreciate your help and patience. Thank you.</p>
  
  <pre><code>fid = fopen('I:\PatientData\patient1\out_2_to_1_us\deformationField_test.raw') dvf =     fread(fid);
  
  length(div)
  div = (0.1) * ones(42491904,1); dvf_cm = dvf.* div;
  
  count = fwrite(fid,dvf_cm,'float64'); 
  fclose(fid);
  </code></pre>