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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 avw_metric</title>  <meta name="keywords" content="avw_metric">  <meta name="description" content="AVW_METRIC - Convert image location from CRS to meters">  <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">  <meta name="generator" content="m2html &copy; 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> &gt;  <a href="index.html">mri_toolbox</a> &gt; avw_metric.m</div><!--<table width="100%"><tr><td align="left"><a href="../index.html"><img alt="<" border="0" src="../left.png">&nbsp;Master index</a></td><td align="right"><a href="index.html">Index for mri_toolbox&nbsp;<img alt=">" border="0" src="../right.png"></a></td></tr></table>--><h1>avw_metric</h1><h2><a name="_name"></a>PURPOSE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2><div class="box"><strong>AVW_METRIC - Convert image location from CRS to meters</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 [XYZm] = avw_metric(hdr,XYZimg) </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"> AVW_METRIC - Convert image location from CRS to meters

 Useage:  XYZm = avw_metric(hdr,XYZimg)

 hdr    - avw.hdr from avw_hdr_read
 XYZimg - Nx3 matrix of image coordinates
 XYZm   - Nx3 matrix of image meter coordinates (not mm)</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)"></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 [XYZm] = avw_metric(hdr,XYZimg)</a>0002 0003 <span class="comment">% AVW_METRIC - Convert image location from CRS to meters</span>0004 <span class="comment">%</span>0005 <span class="comment">% Useage:  XYZm = avw_metric(hdr,XYZimg)</span>0006 <span class="comment">%</span>0007 <span class="comment">% hdr    - avw.hdr from avw_hdr_read</span>0008 <span class="comment">% XYZimg - Nx3 matrix of image coordinates</span>0009 <span class="comment">% XYZm   - Nx3 matrix of image meter coordinates (not mm)</span>0010 <span class="comment">%</span>0011 0012 <span class="comment">% $Revision: 1.6 $ $Date: 2004/02/07 01:41:51 $</span>0013 0014 <span class="comment">% Licence:  GNU GPL, no express or implied warranties</span>0015 <span class="comment">% History:  06/2002, Darren.Weber@flinders.edu.au</span>0016 <span class="comment">%</span>0017 <span class="comment">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span>0018 0019 <span class="keyword">if</span> isempty(XYZimg), error(<span class="string">'XYZimg is empty'</span>); <span class="keyword">end</span>;0020 <span class="keyword">if</span> isempty(hdr),    error(<span class="string">'hdr is empty'</span>); <span class="keyword">end</span>;0021 0022 <span class="keyword">if</span> size(XYZimg,2) ~= 3,0023     msg = sprintf(<span class="string">'AVW_METRIC: XYZimg must be Nx3 matrix\n'</span>);0024     error(msg);0025 <span class="keyword">end</span>0026 0027 XYZpixdim = double(hdr.dime.pixdim(2:4));0028 0029 <span class="keyword">if</span> findstr(hdr.dime.vox_units,<span class="string">'mm'</span>),0030     fprintf(<span class="string">'AVW_METRIC: voxel units: mm\n'</span>);0031     XYZpixdim = XYZpixdim ./ 1000;0032 <span class="keyword">end</span>0033 <span class="keyword">if</span> findstr(hdr.dime.vox_units,<span class="string">'cm'</span>),0034     fprintf(<span class="string">'AVW_METRIC: voxel units: cm\n'</span>);0035     XYZpixdim = XYZpixdim ./ 100;0036 <span class="keyword">end</span>0037 0038 XYZpixdim = repmat(XYZpixdim,size(XYZimg,1),1);0039 0040 0041 XYZm = XYZimg .* XYZpixdim;0042 0043 <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> &copy; 2003</address></body></html>
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