General form:

.save vector vector vector ...

Examples:

.save i(vin) node1 v(node2)
.save @m1[id] vsource#branch
.save all @m2[vdsat]

The vectors listed on the .SAVE line are recorded in the rawfile for use later with ngspice or ngnutmeg (ngnutmeg is just the data-analysis half of ngspice, without the ability to simulate). The standard vector names are accepted. Node voltages may be saved by giving the nodename or v(nodename). Currents through an independent voltage source are given by i(sourcename) or sourcename#branch. Internal device data are accepted as @dev[param].

If no .SAVE line is given, then the default set of vectors is saved (node voltages and voltage source branch currents). If .SAVE lines are given, only those vectors specified are saved. For more discussion on internal device data, e.g. @m1[id], see Appendix, Chapt. 31.1. If you want to save internal data in addition to the default vector set, add the parameter all to the additional vectors to be saved. If the command .save vm(out) is given, and you store the data in a rawfile, only the original data v(out) are stored. The request for storing the magnitude is ignored, because this may be added later during rawfile data evaluation with ngnutmeg or ngspice. See also the section on the interactive command interpreter (Chapt. 17.5) for information on how to use the rawfile.