On Monday 15 March 2010, Dave McGuire wrote: > On Mar 15, 2010, at 12:32 AM, Dan McMahill wrote: > >>> With the help of Ivan I'm writing a viewer, oscopy > >>> (http://repo.or.cz/w/oscopy.git) based draft #4 of this > >>> page: > >>> http://geda.seul.org/wiki/geda:data_plotting_improvements > >> > >> IMHO, there are already very mature open source data > >> plotters out there. Think gnuplot, or grace. What is the > >> rationale in rolling your own? > > > > unless I'm missing some key feature of gnuplot and grace, > > they stink for plotting simulator output. > > > > I spend a *lot* of time looking at simulator output and > > some of the things which are used over and over again are > > easy interactive zoom in/out, panning at a fixed zoom, > > putting cursors on waveforms that will lock onto the actual > > datapoints, having delta cursors, and having a flexible and > > *extensible* waveform calculator. The types of > > postprocessing range from the very simple (out_plus - > > out-minus) to more complex but standard like an fft to > > fairly complex custom functions. > > Good heavens. That's the sort of stuff I do with a > digitizing oscilloscope. I could never imagine doing that > with simulator output.
Because you have never used a good simulator/schematic combination. What Dan describes is not only doable, it is what is needed to be taken seriously. Nothing less will do. The functionality of a digital oscilloscope is the minimum. Build that as a base, then you can start to think of what is really needed. I use gwave. It is the best so far, but there is a lot of room for improvement. _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
