ngspice-python

Code example to run Ngspice Raw File using Python Script

1. Import NgSpicedata module present in repo

from ngspicedata import *

2. Import Matplotlib module for plotting purpose

from pylab import *
import matplotlib.pyplot as pl

3. Load the simrun file using

data=NgspiceData("simrun.raw")

4. Print the simulation signal

sig_names = data.lssig('print') 

5. Store values in x an y

In example code for inverter two signals "in" and "out" voltage is there.

x = data.evalsig('in')
y= data.evalsig('out')

6. Plot the Inverter Graph

fig = figure(1)
fig.clf()
plot(x,y,'b-')
plt.xlabel('v(in)')
plt.ylabel('v(out)')
grid(True)
pl.show()