first of all, let me apologize for a poor math-english translation, I'll try my very best.
I have the following situation: I have over 16.000 data files which I generated from a biometric verification system. Those files contain Error Rates for False-negative and False-positive at a specific threshold. So every data file becomes one Plot to detect an equal error rate (intersection of both rates). Special is in this case, that it may also contain more than one intersection, which is not typical but possible in this case.
I used to use gnuplot before to generate plots, but now the amount is a new level.
I can't watch every plot by myself which would take days. And it's for sure that lots of the files may not contain any intersection in the result.
Therefore I wonder if there is any possibility to calculate for each file the intersection(s) with MATLAB, Mathematica or anything else?
And after having calculated maybe generate a plot (preferred svg format but not important in this step) for that file so that I end up with only "useful" data files and plots with a fixed threshold.
I hope I could explain what my problem is and seeing forward for your ideas.
(Note: Both examples do not belong together, just choosed quickly and randomly from the files)
Data file example:
> #k NFA NIA NFR NEA FAR FRR > #Alpha Vector 0 0 -1 0 0 0 -1 0 -1 0 0 -1 > 0.4 280.0 280.0 0.0 40.0 100 0 > 0.41 280.0 280.0 0.0 40.0 100 0 > 0.42 280.0 280.0 0.0 40.0 100 0 > 0.43 280.0 280.0 0.0 40.0 100 0 > 0.44 280.0 280.0 0.0 40.0 100 0 > 0.45 280.0 280.0 0.0 40.0 100 0 > 0.46 280.0 280.0 0.0 40.0 100 0 > > # k is the threshold, FAR and FRR are 2 curves. k is on x-axis, value of FAR/FRR on y.
I have no experience with matlab and just worked with wolframalpha mathematica during calculus at university. I study computer sciences in Germany, so ideas for scripting and co are also welcome and probably welcomed :-)