title: How to convert LUA Table to matlab MAT File?
body: <p>I want to save a LUA table as a MAT file. Structure of Table is as follows:</p>
  
  <pre><code>{
    1 : 
      {
        bounding_box : 
          {
            1 : 0.5
            2 : 0.5
            3 : 704.5
            4 : 1280.5
          }
        PatchName : "03952.jpg"
        confidence : 
          {
            1 : 0.99999818651222
            2 : 1.8134877758073e-06
          }
      }
    2 : 
      {
        bounding_box : 
          {
            1 : 45.5
            2 : 159.5
            3 : 132.5
            4 : 216.5
          }
        PatchName : "03953.jpg"
        confidence : 
          {
            1 : 0.99999864618192
            2 : 1.3538180818906e-06
          }
      }
   }
  </code></pre>
  
  <p>Can anybody guide me how to do that ?</p>
  
  <p>I tried matio.save(string of path, table to save) but it returned following error:</p>
  
  <pre><code>bad argument #1 to 'varCreate' (cannot convert 'number' to 'const char *')
  stack traceback:
      [C]: in function 'varCreate'
      /home/khurram/torch/install/share/lua/5.1/matio/init.lua:136: in function '__make_var'
      /home/khurram/torch/install/share/lua/5.1/matio/init.lua:78: in function '__make_var'
      /home/khurram/torch/install/share/lua/5.1/matio/init.lua:78: in function '__make_var'
      /home/khurram/torch/install/share/lua/5.1/matio/init.lua:434: in function 'save'
      main.lua:171: in main chunk
      [C]: in function 'dofile'
      [string "_RESULT={dofile('main.lua')}"]:1: in main chunk
      [C]: in function 'xpcall'
      /home/khurram/torch/install/share/lua/5.1/trepl/init.lua:651: in function &lt;/home/khurram/torch/install/share/lua/5.1/trepl/init.lua:560&gt;
      [string "require('trepl')()"]:1: in main chunk  
  </code></pre>