ngSPICE examples with gnuplot figures and multiple analysis such as:

• AC analysis : label "ac"
• DC sweep analysis : label "dc"
• Pole-Zero analysis : label "pz"
• Transient analysis : label "tr"

In the entire project, Makefile is used for shortcut to the commands, and the typical make commands are:

• sch2net : convert the gschem schematic to netlist (only netlist, actually without running)
• net2cir_"analysis" : circuit generation with netlist and analysis.
• cir2dat_"analysis" : data output generation from the circuit.
• dat2plt_"analysis" : plot feature.
• all_"analysis" : makes all three last steps in one. With void field, all the analysis are run
• clean : remove all trash.
• ngspice_"analysis" : ngspice in interactive mode.

The "analysis" field stands for all the different analysis done for the circuit.