It can only display waveforms from the current simulation run. I used this Cadence environment for 18 years of my career.ĪFAIK, this capability doesn't exist within LTspice itself. The commercial schematic capture / simulation environment from Cadence called Virtuoso has a plotting environment that contains the buttons Plot and ErasePlot, which respectively: (1) add a waveform to the active plot window without erasing previous waveforms (2) add the new waveform to the active plot window after first erasing the old contents. To be really useful for repetitive comparisons, this function would have to be easy to invoke. Is there any way to tell LTspice to retain the old waveform - do not erase it - and plot the new waveform in the same Plot Pane? LTspice replaces the old Plot Pane waveform with a new one, which makes it difficult to compare new and old waveforms. When optimizing some circuit behavior (say, open loop response of an amplifier), I often tweak a component value and observe how the behavior changes (say, looking at how the open loop response changes after tweaking a compensation capacitor). Subject: Any Way To Retain Plot Pane Waveform After New Analysis? as in >holc on plot(f, valriable) hold off Īs I said, a bit 'mickey mouse' but works. Then go to octave and load all the files and strip to values and then plot.
I export the plot waveform to a txt file, then rename appropriately Then do the analysis and again export plot to a text file, and so on.
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