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    <p>The <a href="http://www.mathworks.com/help/matlab/ref/sortrows.html" rel="nofollow"><code>sortrows</code></a> function is designed to handle this and works for cell arrays:</p> <blockquote> <p><code>sortrows(X,COL)</code> sorts the matrix based on the columns specified in the vector <code>COL</code>.</p> </blockquote> <p>Say you have your datatable <code>T</code> formatted as a cell. For example, this random data:</p> <pre><code>&gt;&gt; T = [mat2cell(char(randi(26,4,3)+64),ones(4,1),ones(3,1)) num2cell(rand(4,3))] T = 'W' 'M' 'D' [0.5795] [0.1008] [0.1439] 'Z' 'X' 'S' [0.1030] [0.5029] [0.3192] 'R' 'I' 'U' [0.3553] [0.4873] [0.4491] 'L' 'I' 'U' [0.9389] [0.7817] [0.0499] </code></pre> <p>To sort according to column #4 in ascending order:</p> <pre><code>&gt;&gt; TSortedCol4 = sortrows(T,4) TSortedCol4 = 'Z' 'X' 'S' [0.1030] [0.5029] [0.3192] 'R' 'I' 'U' [0.3553] [0.4873] [0.4491] 'W' 'M' 'D' [0.5795] [0.1008] [0.1439] 'L' 'I' 'U' [0.9389] [0.7817] [0.0499] </code></pre> <hr> <p>If you need to get your data into the format of <code>T</code> above from a text file, you can do the following to read and reformat it:</p> <pre><code>fid = fopen('testtable.txt','r'); Tin = textscan(fid, '%q %q %q %f %f %f'); % each column has a cell strcols=cellfun(@iscell,Tin); T = [Tin{strcols} num2cell([Tin{~strcols}])]; % each item has a cell fclose(fid); </code></pre> <p>As in your example, the columns are delimited by white space. The strings can include spaces if double quotes are used in the text file because of the <code>%q</code> format specifier.</p>
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    1. COThank you, this has been very usefu.
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