| 1 | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> |
|---|
| 2 | <html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"> |
|---|
| 3 | <title>mixpp: How to write and use mex files for Matlab</title> |
|---|
| 4 | <link href="tabs.css" rel="stylesheet" type="text/css"> |
|---|
| 5 | <link href="doxygen.css" rel="stylesheet" type="text/css"> |
|---|
| 6 | </head><body> |
|---|
| 7 | <!-- Generated by Doxygen 1.5.9 --> |
|---|
| 8 | <script type="text/javascript"> |
|---|
| 9 | <!-- |
|---|
| 10 | function changeDisplayState (e){ |
|---|
| 11 | var num=this.id.replace(/[^[0-9]/g,''); |
|---|
| 12 | var button=this.firstChild; |
|---|
| 13 | var sectionDiv=document.getElementById('dynsection'+num); |
|---|
| 14 | if (sectionDiv.style.display=='none'||sectionDiv.style.display==''){ |
|---|
| 15 | sectionDiv.style.display='block'; |
|---|
| 16 | button.src='open.gif'; |
|---|
| 17 | }else{ |
|---|
| 18 | sectionDiv.style.display='none'; |
|---|
| 19 | button.src='closed.gif'; |
|---|
| 20 | } |
|---|
| 21 | } |
|---|
| 22 | function initDynSections(){ |
|---|
| 23 | var divs=document.getElementsByTagName('div'); |
|---|
| 24 | var sectionCounter=1; |
|---|
| 25 | for(var i=0;i<divs.length-1;i++){ |
|---|
| 26 | if(divs[i].className=='dynheader'&&divs[i+1].className=='dynsection'){ |
|---|
| 27 | var header=divs[i]; |
|---|
| 28 | var section=divs[i+1]; |
|---|
| 29 | var button=header.firstChild; |
|---|
| 30 | if (button!='IMG'){ |
|---|
| 31 | divs[i].insertBefore(document.createTextNode(' '),divs[i].firstChild); |
|---|
| 32 | button=document.createElement('img'); |
|---|
| 33 | divs[i].insertBefore(button,divs[i].firstChild); |
|---|
| 34 | } |
|---|
| 35 | header.style.cursor='pointer'; |
|---|
| 36 | header.onclick=changeDisplayState; |
|---|
| 37 | header.id='dynheader'+sectionCounter; |
|---|
| 38 | button.src='closed.gif'; |
|---|
| 39 | section.id='dynsection'+sectionCounter; |
|---|
| 40 | section.style.display='none'; |
|---|
| 41 | section.style.marginLeft='14px'; |
|---|
| 42 | sectionCounter++; |
|---|
| 43 | } |
|---|
| 44 | } |
|---|
| 45 | } |
|---|
| 46 | window.onload = initDynSections; |
|---|
| 47 | --> |
|---|
| 48 | </script> |
|---|
| 49 | <div class="navigation" id="top"> |
|---|
| 50 | <div class="tabs"> |
|---|
| 51 | <ul> |
|---|
| 52 | <li><a href="main.html"><span>Main Page</span></a></li> |
|---|
| 53 | <li class="current"><a href="pages.html"><span>Related Pages</span></a></li> |
|---|
| 54 | <li><a href="annotated.html"><span>Classes</span></a></li> |
|---|
| 55 | <li><a href="files.html"><span>Files</span></a></li> |
|---|
| 56 | </ul> |
|---|
| 57 | </div> |
|---|
| 58 | <div class="navpath"><a class="el" href="dev_guide.html">BDM Use - in C++</a> |
|---|
| 59 | </div> |
|---|
| 60 | </div> |
|---|
| 61 | <div class="contents"> |
|---|
| 62 | <h1><a class="anchor" name="mexfiles">How to write and use mex files for Matlab </a></h1><h2><a class="anchor" name="use"> |
|---|
| 63 | Howto use predefined mexfiles</a></h2> |
|---|
| 64 | A range of mexfiles is predefined in directory <code>library/mex</code>. Many of these mexfile process ui files (see <a class="el" href="ui_page.html">User Infos and their use</a>) examples of these files are in directory <code>library/tutorial</code>. Note that in order to run these files you need to let matlab know where to find them: <div class="fragment"><pre class="fragment">>> addpath path_to_bdm/library/mex |
|---|
| 65 | </pre></div><p> |
|---|
| 66 | Then, you can go to <code>library/tutorial</code> and run e.g. <code>arx_test_mex</code>.<h2><a class="anchor" name="write"> |
|---|
| 67 | Howto write custom mex file</a></h2> |
|---|
| 68 | Due to special nature of the mex files, the mex file can be split in three parts: <ul> |
|---|
| 69 | <li>input conversion, where input arguments are converted to IT++ structures, </li> |
|---|
| 70 | <li>main body of algorithm, where any C++ bdm constructions can be used, </li> |
|---|
| 71 | <li>output conversion, where resulting IT++ structures are converted to mxArrays.</li> |
|---|
| 72 | </ul> |
|---|
| 73 | The first and the third part is achieved using prepared IT++ routines, see IT++ documentation.<p> |
|---|
| 74 | Script <code></code>./buildmex is prepared to compile and link the mexfile with bdm. <div class="fragment"><pre class="fragment">$ ./buildmex.sh my_mex_file.cpp |
|---|
| 75 | </pre></div> on Linux, or <div class="fragment"><pre class="fragment">$ ./buildmex.bat my_mex_file.cpp |
|---|
| 76 | </pre></div> on Windows.<p> |
|---|
| 77 | Example of a mexfile: <div class="fragment"><pre class="fragment"></pre></div> </div> |
|---|
| 78 | <hr size="1"><address style="text-align: right;"><small>Generated on Wed Oct 7 17:34:45 2009 for mixpp by |
|---|
| 79 | <a href="http://www.doxygen.org/index.html"> |
|---|
| 80 | <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.9 </small></address> |
|---|
| 81 | </body> |
|---|
| 82 | </html> |
|---|
