title: Extracting data from filenames in Gnuplot
body: <p>Is there a way for Gnuplot to read and recognize structured strings? Specifically, I have a few hundred files, all containing measurement data, with measurement conditions defined in the filename.</p>
  
  <p>My files look something like "100d5mK2d0T.txt", which would mean that this data was acquired at 100.5mK temperature and 2.0T magnetic field. </p>
  
  <p>Any chance I could extract the temperature and field strength data from the name, and use them as labels in the plot?</p>
  
  <p>Thanks in advance.</p>