Good evening, I was building a simple circuit in Xschem using the Sky130A PDK to test the simulation functionalities of Ngspice. However, when I tried to display the values of my component—specifically an NFET 01V8—such as gm or VDS, I received the message "notype, real, 1 long" instead of the expected numerical values. What do I need to do to obtain these values?

What is your simulation script? Did you explicitly save the value for these (ngspice needs that)? Add a .save statement for each that you want to inspect and see if that helps, for example:

.save @m.xm1.msky130_fd_pr__nfet_01v8[gm]

the image is the script that i used. I thought that including ".save all" automatically saved all the values. I tried to add your suggestion, if i replaced the line .save all with

@m.xm1.msky130_fd_pr__nfet_01v8[gm]

it gives me an error message that -i(V2) no such vector but if both lines are in the code that message doesn't show up and the result is still notype.

@Jose Daniel Silva Santos use print instead of display. print @m.xm1.msky130_fd_pr__nfet_01v8[gm] print @m.xm1.msky130_fd_pr__nfet_01v8