Dear Qucs Team,
congratulations for the developement of this amazing piece of software. The fact that such programs are under the GPL licence is very promising...

I have a question I'd like to ask. Could you please tell me if there is a way to change the data item on the x-Axis in the diagrams? I am trying to depict the i-v curve of a diode under a dc Voltage source when a resistor is connected before the diode (in line). In other words, i want the diode's voltage (not the source's voltage) to be in the x axis and the current in the y-axis. I tried the PlotVs equation but i get a "wrong dependency" message in the table (the dependency remains on the source's voltage so the x-axis remains as it is).

An idea to solve the problem could be replacing the voltage source with a current source (so the current, which is the same everywhere in the circiut, is the independent data) and then measuring the diode's voltage, but with  the axes being reversed, but i don't know if this is possible.

Thank you in advance and congratulations,
George Kourkafas
Greece.


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