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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd"><html><head> <title>Description of mni2tal</title> <meta name="keywords" content="mni2tal"> <meta name="description" content="MNI2TAL - MNI to Talairach coordinates (best guess)"> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <meta name="generator" content="m2html © 2003 Guillaume Flandin"> <meta name="robots" content="index, follow"> <link type="text/css" rel="stylesheet" href="../m2html.css"></head><body><a name="_top"></a><div><a href="../index.html">Home</a> > <a href="index.html">mri_toolbox</a> > mni2tal.m</div><!--<table width="100%"><tr><td align="left"><a href="../index.html"><img alt="<" border="0" src="../left.png"> Master index</a></td><td align="right"><a href="index.html">Index for mri_toolbox <img alt=">" border="0" src="../right.png"></a></td></tr></table>--><h1>mni2tal</h1><h2><a name="_name"></a>PURPOSE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2><div class="box"><strong>MNI2TAL - MNI to Talairach coordinates (best guess)</strong></div><h2><a name="_synopsis"></a>SYNOPSIS <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2><div class="box"><strong>function outpoints = mni2tal(inpoints) </strong></div><h2><a name="_description"></a>DESCRIPTION <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2><div class="fragment"><pre class="comment"> MNI2TAL - MNI to Talairach coordinates (best guess)
outpoints = mni2tal(inpoints)
inpoints - Nx3 or 3xN matrix of coordinates
(N being the number of points)
outpoints - the coordinate matrix with Talairach points
See also, <a href="tal2mni.html" class="code" title="function outpoints = tal2mni(inpoints)">TAL2MNI</a>, <a href="mni2tal_matrix.html" class="code" title="function M2T = mni2tal_matrix()">MNI2TAL_MATRIX</a> & http://www.mrc-cbu.cam.ac.uk/Imaging/mnispace.html</pre></div><!-- crossreference --><h2><a name="_cross"></a>CROSS-REFERENCE INFORMATION <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>This function calls:<ul style="list-style-image:url(../matlabicon.gif)"><li><a href="mni2tal_matrix.html" class="code" title="function M2T = mni2tal_matrix()">mni2tal_matrix</a> MNI2TAL_MATRIX - Talairach to MNI coordinates (best guess)</li></ul>This function is called by:<ul style="list-style-image:url(../matlabicon.gif)"></ul><!-- crossreference --><h2><a name="_source"></a>SOURCE CODE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2><div class="fragment"><pre>0001 <a name="_sub0" href="#_subfunctions" class="code">function outpoints = mni2tal(inpoints)</a>0002 0003 <span class="comment">% MNI2TAL - MNI to Talairach coordinates (best guess)</span>0004 <span class="comment">%</span>0005 <span class="comment">% outpoints = mni2tal(inpoints)</span>0006 <span class="comment">%</span>0007 <span class="comment">% inpoints - Nx3 or 3xN matrix of coordinates</span>0008 <span class="comment">% (N being the number of points)</span>0009 <span class="comment">%</span>0010 <span class="comment">% outpoints - the coordinate matrix with Talairach points</span>0011 <span class="comment">%</span>0012 <span class="comment">% See also, TAL2MNI, MNI2TAL_MATRIX &</span>0013 <span class="comment">% http://www.mrc-cbu.cam.ac.uk/Imaging/mnispace.html</span>0014 <span class="comment">%</span>0015 0016 <span class="comment">% $Revision: 1.5 $ $Date: 2004/02/07 01:41:51 $</span>0017 0018 <span class="comment">% Licence: GNU GPL, no express or implied warranties</span>0019 <span class="comment">% Matthew Brett 10/8/99, matthew.brett@mrc-cbu.cam.ac.uk</span>0020 <span class="comment">% modified 02/2003, Darren.Weber_at_radiology.ucsf.edu</span>0021 <span class="comment">% - removed dependence on spm_matrix and</span>0022 <span class="comment">% abstracted the matrix in case it changes</span>0023 <span class="comment">%</span>0024 <span class="comment">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span>0025 0026 dimdim = find(size(inpoints) == 3);0027 <span class="keyword">if</span> isempty(dimdim),0028 error(<span class="string">'input must be a Nx3 or 3xN matrix'</span>)0029 <span class="keyword">end</span>0030 <span class="keyword">if</span> dimdim == 2,0031 inpoints = inpoints';0032 <span class="keyword">end</span>0033 0034 <span class="comment">% Transformation matrices, different zooms above/below AC</span>0035 M2T = <a href="mni2tal_matrix.html" class="code" title="function M2T = mni2tal_matrix()">mni2tal_matrix</a>;0036 0037 inpoints = [inpoints; ones(1, size(inpoints, 2))];0038 0039 tmp = inpoints(3,:) < 0; <span class="comment">% 1 if below AC</span>0040 0041 inpoints(:, tmp) = (M2T.rotn * M2T.downZ) * inpoints(:, tmp);0042 inpoints(:, ~tmp) = (M2T.rotn * M2T.upZ ) * inpoints(:, ~tmp);0043 0044 outpoints = inpoints(1:3, :);0045 <span class="keyword">if</span> dimdim == 2,0046 outpoints = outpoints';0047 <span class="keyword">end</span>0048 0049 <span class="keyword">return</span></pre></div><hr><address>Generated on Fri 21-May-2004 12:38:21 by <strong><a href="http://www.artefact.tk/software/matlab/m2html/">m2html</a></strong> © 2003</address></body></html>⌨️ 快捷键说明
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