<br>The software guide and Examples/IO/ImageSeriesReadWrite2.cxx provide some explanation of how to work with itk::RegularExpressionSeriesFileNames.<br><br>However, I have not been able to find information on how to specify the regex and sort command line arguments for it. The file name regex might be compatible with grep or sed, or some other regex engine? What is the sort input, is it another regex?<br>
<br>What is the best way to debug the regex and sort inputs? What is the easiest way to get a std:cout list of the files after they are found and sorted?<br><br>Thanks in advance,<br>Darren<br><br><br>PS,<br><br><h2>Detailed Description</h2>
Generate an ordered sequence of filenames that match a regular expression.
<p>
This class generates an ordered sequence of files whose filenames match
a regular expression. <b>[What is the regex library?]</b> The file names are sorted using a sub expression
match selected by SubMatch. <b>[What does this mean?]</b> Regular expressions are a powerful, compact
mechanism for parsing strings. Expressions consist of the following
metacharacters:</p><p>
^ Matches at beginning of a line</p><p>
$ Matches at end of a line</p><p>
. Matches any single character</p><p>
[ ] Matches any character(s) inside the brackets</p><p>
[^ ] Matches any character(s) not inside the brackets</p><p>
</p><ul><li>Matches any character in range on either side of a dash</li></ul>
<p>
* Matches preceding pattern zero or more times</p><p>
+ Matches preceding pattern one or more times</p><p>
? Matches preceding pattern zero or once only</p><p>
() Saves a matched expression and uses it in a later match</p><p>
Note that more than one of these metacharacters can be used in a single
regular expression in order to create complex search patterns. For
example, the pattern [^ab1-9] says to match any character sequence that
does not begin with the characters "ab" followed by numbers in the
series one through nine. </p><p>Definition at line <a class="el" href="file:///opt/local/share/InsightToolkit-3.12/doc/html/itkRegularExpressionSeriesFileNames_8h-source.html#l00072">72</a> of file <a class="el" href="file:///opt/local/share/InsightToolkit-3.12/doc/html/itkRegularExpressionSeriesFileNames_8h-source.html">itkRegularExpressionSeriesFileNames.h</a>.</p>