Easier Way to Build Spice Models from Old Data Sheets

[kq6up]

I would like to find an easier way to build spice models from old data sheets. Normally one would have to tediously build spread sheet tables from curve traces of these old tubes. However, I was wondering if there is some sort of program that allows one to trace lines over the images, set extremis, and have a program either generate a data table from this line, or directly generate a power series that fits this curve. Is there any lab tools/software that can do something like this?

Thanks,
Chris Maness

 

[Khashishi]

This will trace line graphs.
http://datathief.org/

 

[kq6up]

Sweet thanks.

Chris