Over time we have managed to collect a very large number of measurements. Initially all the data that we have is shown in the left frame. The user selects (by checking) the results that he or she wishes to plot or otherwise analyze. However, sometimes it is hard to find the subset of results on which the user might wish to perform collective analysis. The "Filter" capability will permit you to see a subset of results and from this reduced set you can select the graphs that you with to draw.
Filter string takes regularg expresssions. Specifically, Perl's pattern matching operator is used. To use the filter capability enter the filtering criteria and hit the "Filter" button. This will prouduce a filtered (and likely a much smaller) listing in the left frame. You can refine your filter or proceed to produce the plots you desire from the subset of results that are shown. After you have being using the filter feature you should hit "reset" or simply revisit this page in your browswer when you wish to start over and/or see the entire set of collected data. Some examples on how to use the filter capability are shown below.
Please note that filtering is case insensitive. If there is sufficient need I may add a flag that will permit case sensitive mapping. For now, just the Perl "m/foo/i" operator is used directly.